Exhibit 10.30

                             BUSINESS LOAN AGREEMENT

Principal:        $2,000,000.00
Loan Date:        November 2, 2000
Maturity:         June 5, 2001

Borrower:         Exigent Software Technology, Inc.
                  1830 Penn Street
                  Melbourne, FL  32901

Lender:           THE HUNTINGTON NATIONAL BANK
                  MELBOURNE
                  685 S. BABCOCK STREET
                  MELBOURNE, FL  32901

This  agreement has been delivered to lender and accepted by lender in the state
of Ohio.

THIS BUSINESS  LOAN  AGREEMENT  dated  11/7/2000,  is made and executed  between
Exigent Software Technology,  Inc. ("Borrower") and THE HUNTINGTON NATIONAL BANK
("Lender") on the following  terms and  conditions.  Borrower has received prior
commercial  loans from Lender or has applied to Lender for a commercial  loan or
loans or other financial accommodations,  including those which may be described
on any  exhibit  or  schedule  attached  to this  Agreement  ("Loan").  Borrower
understands and agrees that: (A) in granting,  renewing,  or extending any Loan,
Lender is relying upon Borrower's representations, warranties, and agreements as
set forth in this Agreement,  and (B) all such Loans shall be and remain subject
to the terms and conditions of this Agreement.

TERM. This Agreement  shall be effective as of 11/7/2000,  and shall continue in
full force and effect  until  such time as all of  Borrower's  Loans in favor of
Lender  have  been  paid in  full,  in  principal,  interest,  costs,  expenses,
attorneys'  fees, and other fees and charges,  or until such time as the parties
may agree in writing to terminate this Agreement.

         Collateral  Records.  Borrower  does now,  and at all  times  hereafter
         shall,  keep correct and  accurate  records of the  Collateral,  all of
         which records  shall be available to Lender or Lender's  representative
         upon demand for  inspection  and copying at any  reasonable  time.  The
         above  is an  accurate  and  complete  list of all  locations  at which
         Borrower  keeps or maintains  business  records  concerning  Borrower's
         collateral.

         Collateral  Schedules.  Concurrently with the execution and delivery of
         this Agreement,  Borrower shall execute and deliver to Lender schedules
         of in  form  and  substance  satisfactory  to  the  Lender.  Thereafter
         supplemental  schedules  shall be delivered  according to the following
         schedule:

CONDITIONS  PRECEDENT TO EACH ADVANCE.  Lender's  obligation to make the initial
Advance and each subsequent Advance under this Agreement shall be subject to the
fulfillment to Lender's  satisfaction of all of the conditions set forth in this
Agreement and in the Related Documents.
<PAGE>

         Loan  Documents.   Borrower  shall  provide  to  Lender  the  following
         documents for the Loan: (1) the Note; (2) guaranties; (3) together with
         all such Related  Documents as Lender may require for the Loan;  all in
         form and substance satisfactory to Lender and Lender's counsel.

         Borrower's  Authorization.  Borrower  shall have  provided  in form and
         substance satisfactory to Lender properly certified  resolutions,  duly
         authorizing the execution and delivery of this Agreement,  the Note and
         the Related Documents.  In addition,  Borrower shall have provided such
         other resolutions,  authorizations, documents and instruments as Lender
         or its counsel, may require.

         Payment of Fees and  Expenses.  Borrower  shall have paid to Lender all
         fees,  charges,  and other  expenses  which are then due and payable as
         specified in this Agreement or any Related Document.

         Representations and Warranties.  The representations and warranties set
         forth in this Agreement, in the Related Documents,  and in any document
         or  certificate  delivered to Lender under this  Agreement are true and
         correct.

         No Event of Default. There shall not exist at the time of any Advance a
         condition  which  would  constitute  an Event  of  default  under  this
         Agreement or under any Related Document.

REPRESENTATIONS  AND WARRANTIES.  Borrower represents and warrants to Lender, as
of the  date of this  Agreement,  as of the  date of each  disbursement  of loan
proceeds, as of the date of any renewal,  extension or modification of any Loan,
and at all times any Indebtedness exists:

         Organization. Borrower is a corporation for profit which is, and at all
         times shall be, duly organized,  validly existing, and in good standing
         under  and by  virtue  of the laws of the  State of  Florida.  Borrower
         maintains an office at 1830 Penn Street,  Melbourne,  FL 32901.  Unless
         Borrower has designated  otherwise in writing,  the principal office is
         the office at which Borrower keeps its books and records  including its
         records  concerning the Collateral.  Borrower will notify Lender of any
         change in the location of Borrower's principal office.

          Assumed  Business Names.  Borrower has filed or recorded all documents
          or filings required by law relating to all assumed business names used
          by  Borrower.  Excluding  the name of  Borrower,  the  following  is a
          complete list of all assumed  business names under which Borrower does
          business: None

         Authorization.  Borrower's execution, delivery, and performance of this
         Agreement and all the Related  Documents  have been duly  authorized by
         all necessary action by Borrower and do not conflict with,  result in a
         violation  of, or  constitute  a default  under  (1) any  provision  of
         Borrower's articles of incorporation or organization, or bylaws, or any
         agreement or other  instrument  binding  upon  Borrower or (2) any law,
         governmental regulation,  court decree, or order applicable to Borrower
         or to Borrower's properties.
<PAGE>

AFFIRMATIVE  COVENANTS.  Borrower covenants and agrees with Lender that, so long
as this Agreement  remains in effect, Borrower will:

         Notices of Claims and Litigation.  Promptly inform Lender in writing of
         (1) all material adverse changes in Borrower's financial condition, and
         (2) all existing and all threatened litigation, claims, investigations,
         administrative proceedings or similar actions affecting Borrower or any
         Guarantor  which could  materially  affect the  financial  condition of
         Borrower or the financial condition of any Guarantor.

         Financial  Records.  Maintain its books and records in accordance  with
         accounting  principles  acceptable  to Lender,  applied on a consistent
         basis,  and permit  Lender to examine  and audit  Borrower's  books and
         records at all reasonable times.

         Financial Statements.  Furnish Lender with the following:

(1)                 Annual  Statements.  As soon as  available,  but in no event
                    later than  ninety  (90) days  after the end of each  fiscal
                    year,  Borrower's balance sheet and income statement for the
                    year  ended,   audited  by  a  certified  public  accountant
                    satisfactory to Lender.
(2)                 Interim  Statements.  As soon as available,  but in no event
                    later  than 45 days  after the end of each  fiscal  quarter,
                    Borrower's  balance sheet and profit and loss  statement for
                    the period ended, prepared by Borrower.
(3)                 Tax  Returns.  As soon as  available,  but in no event later
                    than  one-hundred-twenty  (120)  days  after the  applicable
                    filing date for the tax reporting period ended,  Federal and
                    other  governmental  tax  returns,  prepared  by a certified
                    public accountant satisfactory to Lender.

         All  financial  reports  required to be provided  under this  Agreement
         shall be  prepared in  accordance  with GAAP,  applied on a  consistent
         basis, and certified by Borrower as being true and correct.

         Loan   Proceeds.   Use   all  Loan  proceeds  solely   for   Borrower's
         business  operations,  unless  specifically  consented  to the contrary
         by Lender in writing.

         Taxes,  Charges  and  Liens.  Pay  and  discharge  when  due all of its
         indebtedness  and  obligations,   including   without   limitation  all
         assessments,  taxes,  governmental charges,  levies and liens, of every
         kind and nature,  imposed upon Borrower or its properties,  income,  or
         profits,  prior to the date on which  penalties  would attach,  and all
         lawful claims that,  if unpaid,  might become a lien or charge upon any
         of Borrower's properties, income, or profits.

         Performance.  Perform and comply,  in a timely manner,  with all terms,
         conditions,  and provisions set forth in this Agreement, in the Related
         Documents, and in all other instruments and agreements between Borrower
         and Lender.  Borrower shall notify Lender immediately in writing of any
         default in connection with any agreement.
<PAGE>

         Operations.  Maintain executive management personnel with substantially
         the  same  qualifications  and  experience  as  the  present  executive
         management personnel; provide written notice to Lender of any change in
         executive and management  personnel;  conduct its business affairs in a
         reasonable and prudent manner.

         Compliance  with  Governmental  Requirements.  Comply  with  all  laws,
         ordinances,  and  regulations,  now  or  hereafter  in  effect,  of all
         governmental  authorities  applicable  to  the  conduct  of  Borrower's
         properties,  businesses and operations,  and to the use or occupancy of
         the  Collateral,  including  without  limitation,  the  Americans  With
         Disabilities  Act.  Borrower  may  contest  in good faith any such law,
         ordinance, or regulation and withhold compliance during any proceeding,
         including  appropriate appeals, so long as Borrower has notified Lender
         in writing  prior to doing so and so long as, in Lender's sole opinion,
         Lender's  interests in the Collateral are not  jeopardized.  Lender may
         require Borrower to post adequate security or a surety bond, reasonably
         satisfactory to Lender, to protect Lender's interest.

         Inspection. Permit employees or agents of Lender at any reasonable time
         to inspect any and all  Collateral for the Loan or Loans and Borrower's
         other  properties and to examine or audit Borrower's  books,  accounts,
         and records  and to make  copies and  memoranda  of  Borrower's  books,
         accounts,  and  records.  If  Borrower  now  or at any  time  hereafter
         maintains any records (including without limitation  computer generated
         records and  computer  software  programs  for the  generation  of such
         records) in the possession of a third party, Borrower,  upon request of
         Lender,  shall  notify such party to permit  Lender free access to such
         records at all  reasonable  times and to provide  Lender with copies of
         any records it may request, all at Borrower's expense.

LENDER'S  EXPENDITURES.  If any action or  proceeding  is  commenced  that would
materially  affect  Lender's  interest in the collateral or if Borrower fails to
comply with any provision of this Agreement or any Related Documents,  including
but not limited to  Borrower's  failure to discharge or pay when due any amounts
Borrower is required to  discharge  or pay under this  Agreement  or any Related
Documents,  Lender on Borrower's behalf may (but shall not be obligated to) take
any action that Lender deems  appropriate on any Collateral and paying all costs
for insuring,  maintaining and preserving any Collateral.  All such expenditures
incurred or paid by Lender for such purposes will then bear interest at the rate
charged  under the Note from the date  incurred or paid by Lender to the date of
repayment by Borrower.  All such expenses will become a part of the Indebtedness
and,  at  Lender's  option,  will (A) be payable on demand;  (B) be added to the
balance of the Note and be apportioned among and be payable with any installment
payments to become due during  either (1) the term of any  applicable  insurance
policy;  or (2) the  remaining  term of the Note; or (C) be treated as a balloon
payment which will be due and payable at the Note's maturity.

NEGATIVE  COVENANTS.  Borrower  covenants and agrees with Lender that while this
Agreement is in effect, Borrower shall not, without the prior written consent of
Lender:
<PAGE>

         Continuity  of  Operations.  (1)  Engage  in  any  business  activities
         substantially  different  than  those in which  Borrower  is  presently
         engaged, (2) cease operations,  liquidate,  merge, transfer, acquire or
         consolidate  with any  other  entity,  change  its  name,  dissolve  or
         transfer or sell Collateral out of the ordinary course of business,  or
         (3) pay any dividends on borrower's stock (other than dividends payable
         in its stock),  provided,  however that  notwithstanding the foregoing,
         but only so long as no Event of Default has occurred and is  continuing
         or would  result  from the  payment  of  dividends,  if  Borrower  is a
         "Subchapter S Corporation"  (as defined in the Internal Revenue Code of
         1986, as amended),  Borrower may pay cash dividends on its stock to its
         shareholders  from time to time in  amounts  necessary  to  enable  the
         shareholders to pay income taxes and make estimated income tax payments
         to satisfy  their  liabilities  under federal and state law which arise
         solely from their status as  Shareholders of a Subchapter S Corporation
         because of their  ownership of shares of Borrower's  stock, or purchase
         or  retire  any of  Borrower's  outstanding  shares  or  alter or amend
         Borrower's capital structure.

         Cessation of Advances.  If Lender has made any  commitment  to make any
         Loan to  Borrower,  whether  under  this  Agreement  or under any other
         agreement,  Lender shall have no obligation to make Loan advances or to
         disburse  Loan proceeds if: (1) Borrower or any guarantor is in default
         under the terms of this Agreement or any other  agreement that Borrower
         or any guarantor has with Lender;  (2) Borrower or any guarantor  dies,
         becomes   incompetent  or  becomes  insolvent,   files  a  petition  in
         bankruptcy or similar proceedings, or is adjudged a bankrupt; (3) there
         occurs a material adverse change in Borrower's financial condition,  in
         the  financial  condition  of any  guarantor,  or in the  value  of any
         collateral  securing any Loan;  or (4) any guarantor  seeks,  claims or
         other  wise  attempts  to  limit,  modify or  revoke  such  guarantor's
         guaranty  of the Loan or any other loan with  Lender,  or (5) Lender in
         good faith deems itself insecure, even though no Event of Default shall
         have occurred.

RIGHT OF SETOFF.  Borrower grants to Lender a contractual  security  interest in
all Borrower's  accounts with Lender (whether checking,  savings,  or some other
account).  This includes all accounts  Borrower  holds jointly with someone else
and all accounts Borrower may open in the future. However, this does not include
any IRA or Keogh  accounts,  or any  trust  accounts  for  which  the grant of a
security interest would be prohibited by law. Borrower authorizes lender, to the
extent  permitted by  applicable  law, to charge or setoff all sums owing on the
indebtedness against any and all such accounts.
<PAGE>

DEFAULT.  Each of the following shall constitute an Event of Default under this
Agreement:

          Payment Default. Borrower fails to make any payment when due under the
          Loan.

          Other  Default.   Borrower  fails  to  comply  with  any  other  term,
          obligation,  covenant or condition  contained in this  Agreement or in
          any of the Related Documents.

          False Statements.  Any representation or statement made by Borrower to
          Lender is false in any material respect.

         Insolvency. The dissolution or termination of Borrower's existence as a
         going  business,  the  insolvency  of Borrower,  the  appointment  of a
         receiver for any part of borrower's  property,  any  assignment for the
         benefit of creditors, any type of creditor workout, or the commencement
         of any proceeding under any bankruptcy or insolvency laws by or against
         Borrower.

         Creditor or Forfeiture  Proceedings.  Commencement  of  foreclosure  or
         forfeiture  proceedings,  whether by  judicial  proceeding,  self-help,
         repossession or any other method, by any creditor of Borrower or by any
         governmental agency against any collateral securing the Loan.

         Events  Affecting  Guarantor.  Any of the preceding  events occurs with
         respect to any  Guarantor of any of the  Indebtedness  or any Guarantor
         dies or becomes incompetent, or revokes or disputes the validity of, or
         liability under, any Guaranty of the Indebtedness.

          Change in Ownership.  Any change in ownership of  twenty-five  percent
          (25%) or more of the common stock of Borrower.

         Insecurity.  Lender in good faith believes itself insecure.

EFFECT OF AN EVENT OF DEFAULT. If any Event of Default shall occur, except where
otherwise provided in this Agreement or the Related  Documents,  all commitments
and  obligations  of Lender  under this  Agreement  immediately  will  terminate
(including any obligation to make further Loan Advances or disbursements),  and,
at Lender's option,  all  Indebtedness  immediately will become due and payable,
all without notice of any kind to borrower,  except that in the case of an Event
of Default of the type  described in the  "Insolvency"  subsection  above,  such
acceleration  shall be automatic and not optional.  In addition,  Borrower shall
have all the rights and remedies  provided in the Related Documents or available
at law, in equity, or otherwise.  Except as may be prohibited by applicable law,
all of Lender's  rights and remedies  shall be  cumulative  and may be exercised
singularly  or  concurrently.  Election by Lender to pursue any remedy shall not
exclude pursuit of any other remedy,  and an election to make expenditures or to
take action to perform an  obligation  of  Borrower or of any Grantor  shall not
affect  Lender's  right to  declare a default  and to  exercise  its  rights and
remedies.
<PAGE>

ATTACHMENT TO BUSINESS LOAN AGREEMENT. An exhibit titled "Attachment to Business
Loan Agreement" is attached to this Agreement and by this reference is made part
of this  Agreement  just as if all the  provisions,  terms and conditions of the
Exhibit had been fully set forth in this Agreement.

REVOLVING LOAN RATE. Except upon a Default, the interest rate for the  Revolving
Loan may be adjusted from time to time as follows:

1. If Exigent's  most recent Form 10Q report  furnished to Lender  indicates the
following  ratios:  Total  Liabilities to Total Net Worth less than 1.50 to 1.00
and Working Capital in excess of $2,500,000.00, then the interest rate otherwise
stated for the  Revolving  Loan  shall be  reduced  by 0.50% for the  subsequent
calendar quarter.

2. If Exigent's  most recent Form 10Q report  furnished to Lender  indicates the
following  ratios:  Total  Liabilities to Total Net Worth less than 1.00 to 1.00
and Working Capital in excess of $3,500,000.00, then the interest rate otherwise
stated for the  Revolving  Loan  shall be  reduced  by 0.75% for the  subsequent
calendar quarter.

ADDITIONAL PROVISIONS.  Borrower shall provide to Lender the following:

1. Quarterly,  10Q reports of Exigent and management  reports  including balance
sheet,  income  statement  and  statement of cash flows,  conforming to GAAP and
prepared on a consolidated basis.

2. Quarterly,  contract status report  detailing  government and  non-government
contracts,  contract value,  estimated profit,  estimated costs,  costs to date,
cost to complete, percent complete, actual earnings, and amount billed.

3.       Annually,  projected  financial  statements  for the next  fiscal  year
prepared on not less than a quarterly basis.

BORROWING  BASE  CERTIFICATE.  Borrower  shall deliver or caused to be delivered
to Lender a Certified  Borrowing  Base Certificate monthly.

FINANCIAL COVENANTS AND RATIOS.  Comply with the following covenants and ratios:

1.   Maximum Total Liabilities  divided by Tangible Net Worth of 3.50 to 1.00 at
     December 31, 1999 and quarterly thereafter.

2.       Maximum  Total  Liabilities divided  by  Tangible  Net Worth of 3.10 to
         1.00 at June 30,  2000 and  quarterly thereafter.

3.       Maximum  Total  Liabilities  divided by Tangible  Net  Worth of 2.75 to
         1.00 at December 31, 2000 and  quarterly thereafter.

4.       Minimum Working Capital of $2,000,000.00 at September 30, 2000 and each
         quarter thereafter.
<PAGE>

5.       Minimum  Current  Ratio  of 1.30 to 1.00 at September 30, 2000 and each
         quarter thereafter.

6.       Minimum  Debt  Service  Coverage  1.20  times  at  fiscal  year end and
         December 31, 2000 and annually thereafter.

CURE  PERIOD  (FOR  DEFAULTS).  Notwithstanding  the  section of this  Agreement
captioned  EFFECT OF AN EVENT OF DEFAULT,  Lender may exercise any or all of its
rights and remedies as set forth in said section and otherwise  only if Borrower
shall fail to  perform,  comply  with or observe or shall  otherwise  breach any
covenant or agreement  contained in this  Agreement or any related Loan Document
and such failure or breach shall  continue for more than Ten (10) days after the
earlier of the date on which  Borrower  shall have  first  become  aware of such
failure or breach or Lender shall have first  notified  Borrower of such failure
or breach.

ADDENDUM TO BUSINESS LOAN  AGREEMENT.  An exhibit  titled  "Addendum to Business
Loan Agreement" is attached to this Agreement and by this reference is made part
of this  Agreement  just as if all the  provisions,  terms and conditions of the
Exhibit had been fully set forth in this Agreement.

DEFINITIONS.  The following capitalized words and terms shall have the following
meanings  when  used  in  this  Agreement.  Unless  specifically  stated  to the
contrary, all references to dollar amounts shall mean amounts in lawful money of
the United States of America. Words and terms used in the singular shall include
the  plural,  and the plural  shall  include  the  singular,  as the context may
require.  Words and terms not otherwise defined in this Agreement shall have the
meanings  attributed to such terms in the Uniform  Commercial  Code.  Accounting
words and terms not otherwise  defined in this Agreement shall have the meanings
assigned to them in accordance with generally accepted accounting  principles as
in effect on the date of this Agreement:

         Advance. The word "Advance" means a disbursement of Loan funds made, or
         to be made, to Borrower or on Borrower's  behalf on a line of credit or
         multiple   advance  basis  under  the  terms  and  conditions  of  this
         Agreement.

         Agreement.  The word "Agreement" means this Business Loan Agreement, as
         this  Business  Loan  Agreement may be amended or modified from time to
         time,  together  with  all  exhibits  and  schedules  attached  to this
         Business Loan Agreement from time to time.

         Borrower.  The word "Borrower" means Exigent Software Technology, Inc.,
         and  all  other  persons  and  entities  signing  the  Note in whatever
         capacity.

         Collateral. The word "Collateral" means all property and assets granted
         as collateral  security for a Loan,  whether real or personal property,
         whether granted  directly or indirectly,  whether granted now or in the
         future,  and  whether  granted  in the  form  of a  security  interest,
         mortgage,  collateral  mortgage,  deed of  trust,  assignment,  pledge,
         chattel mortgage,  crop pledge,  chattel mortgage,  collateral  chattel
         mortgage,  chattel trust,  factor's lien, equipment trust,  conditional
         sale, trust receipt,  lien, charge,  lien or title retention  contract,
         lease or  consignment  intended  as a  security  device,  or any  other
         security or lien interest whatsoever, whether created by law, contract,
         or otherwise.
<PAGE>

         Event of Default.  The words "Event of Default"  mean any of the Events
         of Default set forth in this  Agreement in the Default  section of this
         Agreement.

         GAAP.  The word "GAAP" means generally accepted accounting principles.

         Grantor.  The  word  "Grantor"  means  each and all of the  persons  or
         entities  granting a Security  Interest in any Collateral for the Loan,
         including  without  limitation  all Borrowers  granting such a Security
         Interest.

         Guarantor.   The  word "Guarantor"  means  any  guarantor,   surety, or
         accommodation  party of any or all of the Loan.

         Guaranty.  The word "Guaranty"  means the  guaranty  from  Guarantor to
         Lender, including  without  limitation a guaranty of all or part of the
         Note.

         Indebtedness.  The word "Indebtedness" means the indebtedness evidenced
         by the Note or Related Documents,  including all principal and interest
         together with all other  indebtedness  and costs and expenses for which
         Borrower  is  responsible  under  this  Agreement  or under  any of the
         Related  Documents.  In  addition,  and  without  limitation,  the term
         "Indebtedness" includes all amounts identified in the Revolving Line of
         Credit and Future  Advances  paragraphs  as contained in one or more of
         the Related Documents.

         Lender.  The word  "Lender" means  THE  HUNTINGTON  NATIONAL  BANK, its
         successors and assigns.

         Loan.   The  word  "Loan"  means  any  and  all  loans  and   financial
         accommodations  from  Lender  to  Borrower  whether  now  or  hereafter
         existing,  and however  evidenced,  including without  limitation those
         loans and financial accommodations described herein or described on any
         exhibit or schedule attached to this Agreement from time to time.

         Note.  The word  "Note"  means the Note  executed  by  Borrower  in the
         principal  amount of $2,000,000.00  dated 11/7/2000,  together with all
         renewals  of,  extensions  of,   modifications  of,   refinancings  of,
         consolidations of, and substitutions for the note or credit agreement.

         Related  Documents.  The words "Related  Documents" mean all promissory
         notes, credit agreements,  loan agreements,  environmental  agreements,
         guaranties,  security agreements,  mortgages,  deeds of trust, security
         deeds, collateral mortgages, and all other instruments,  agreements and
         documents,  whether now or hereafter  existing,  executed in connection
         with the Loan.

          BORROWER  ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS BUSINESS
          LOAN  AGREEMENT AND BORROWER  AGREES TO ITS TERMS.  THIS BUSINESS LOAN
          AGREEMENT IS DATED 11/7/2000.

BORROWER:

EXIGENT SOFTWARE TECHNOLOGY, INC.

By:     /s/ Sally H. Ball
      Sally H. Ball, Treasurer of Exigent Software Technology, Inc.


LENDER:

THE HUNTINGTON NATIONAL BANK


X     /s/ Pete Rochester
  Authorized Signer


<PAGE>


                      ATTACHMENT TO BUSINESS LOAN AGREEMENT



         The borrower has  executed  and  delivered to Lender  contemporaneously
herewith  a  certain  promissory  note  (the  Revolving  Loan) in the  amount of
$2,000,000.00 evidencing a certain revolving loan granted by Lender on the terms
and  conditions of this Agreement and the Loan  Documents.  The Borrower and the
Lender  hereby  agree  that at no time  shall  the  outstanding  balance  of the
principal sum of the Revolving Loan exceed the lesser of : (1) 80% of "eligible"
accounts  receivable  plus the lesser of either  $750,000.00 or (2) up to 50% of
"eligible" contract  receivables plus the lesser of either  $1,500,000.00 or (3)
up to 50% of  "eligible"  costs in excess of billings of Borrower  and the Other
Subsidiaries  minus the existing balance on the $3,000,000.00 line of credit and
the term debt  which has a current  balance  of  approximately  $153,313.00  (as
hereinafter defined) (the "Borrowing Base").

         As used herein;  an Eligible Account means an account  receivable owing
to the Borrower  from a party (an Account  debtor)  which met all the  following
requirements  at the time it came into  existence and continues to meet the same
until it is collected in full:

          (1)  Unless a dating program providing  otherwise has been approved in
               writing by the  Lender  (and,  if so, the  account is due and not
               past-due in accordance with such dating program), (1) the account
               is less than 90 days from invoice date (2)  Contracts  receivable
               are  amounts  that are fully  recoverable  according  to contract
               terms  within one year.  Contracts  shall be  submitted to Lender
               prior  to  funding  request  being  made.  Eligibility  shall  be
               determined by Lender in its sole discretion.  (3) Costs in excess
               of  billings:  amounts that are to be billed as of the end of the
               current month.  The Teledesic  Contract is ineligible as costs in
               excess of billings.

          (2)  The account arose from the performance of services or an outright
               and lawful  sale of goods and related  services by the  Borrower,
               all such  goods  having  been  lawfully  shipped  to the  Account
               Debtor, and the Borrower has possession of (and will deliver upon
               the Lender's  request) or has delivered to the Lender,  copies of
               all invoices, shipping documents and delivery receipts evidencing
               such shipment;

          (3)  The amount of the  account  does not  include  any sales or other
               taxes;
<PAGE>

          (4)  The account is not subject to any prior  assignment,  claim, lien
               or security interest,  and the Borrower will not make any further
               assignment  thereof  or  create  any  further  security  interest
               therein nor permit the Borrower's rights therein to be reached by
               attachment, levy garnishment or other judicial process.

          (5)  The  account is not  subject to any  setoff,  credit,  allowance,
               adjustment or discount  (excepting  only any applicable  discount
               for prompt  payment),  and the Account Debtor has not objected as
               to his liability or the amount of his  liability  thereon and has
               not returned or claimed the right to return any of the goods from
               the sale out of which the account arose;

          (6)  The  account  did not  arise  from a  transaction  with a person,
               corporation or entity affiliated with the Borrower;

          (7)  The  account  arose  in the  ordinary  course  of the  Borrower's
               business  and no notice of  bankruptcy,  insolvency  or financial
               distress or embarrassment of the Account Debtor has been received
               by the Borrower;

          (8)  The  account  is  not  evidence  by  chattel  paper,  nor  by any
               promissory note,  payment  instrument or written agreement (other
               than invoices, shipping documents and delivery receipts); and

          (9)  The Lender has not notified the Borrower  that the account or the
               Account Debtor is  unsatisfactory  (although the Lender  reserves
               the right to do so in its sole discretion at any time).

         In the event that more than 25% of any one of the  Borrower's  Eligible
Accounts shall at any one time become more than 90 days past invoice date,  none
of that one Debtor's accounts  receivable shall thereafter be Eligible Accounts,
until such time,  if any, as the Lender may, in its sole  discretion,  determine
that the  Borrower's  percentage  of past due accounts  has been  satisfactorily
reduced or eliminated.  Accounts  receivable  outstanding  from Account  Debtors
whose mailing address or executive offices are located outside the United States
shall not be included in calculating the Eligible Accounts.
<PAGE>

         The Borrower  covenants that on and after the date of this Agreement so
long as the Revolving  Loan remains  unpaid,  the Borrower  shall deliver to the
Lender  within  15 days  after  the end of each  month,  in  addition  to  other
documents and  information  required  pursuant to the Agreement or otherwise,  a
statement  signed by the  president or chief  financial  officer of the Borrower
setting forth and certifying the calculation of the Borrowing Base as of the end
of that period.

This attachment to Business Loan Agreement is executed on 11/7/2000.

Borrower:

EXIGENT SOFTWARE TECHNOLOGY, INC.



By:    /s/  Sally H. Ball
   -----------------------------------------
     Sallly  H. Ball, Treasurer of Exigent Software
     Technology, Inc.

Lender:

THE HUNTINGTON NATIONAL BANK


By:   /s/ Pete Rochester
   -----------------------------------------