Document:

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                                                                   Exhibit 10.18

                              REVOLVING CREDIT NOTE

$1,500,000.00                                                September 22, 2000

     FOR VALUE RECEIVED, the undersigned, EROOM TECHNOLOGY, INC., a Delaware
corporation (the "Borrower"), hereby promises to pay to the order of FLEET
NATIONAL BANK, a national banking association (the "Bank") at the Bank's head
office at 100 Federal Street, Boston, Massachusetts 02110:

          (a) prior to or on the Revolving Credit Loan Maturity Date the
     principal amount of One Million Five Hundred Thousand and 00/100 Dollars
     ($1,500,000.00) or, if less, the aggregate unpaid principal amount of
     Revolving Credit Loans advanced by the Bank to the Borrower pursuant to the
     Credit Agreement dated of even date herewith (as amended and in effect from
     time to time, the "Credit Agreement"), between the Borrower and the Bank;

          (b) the principal outstanding hereunder from time to time at the times
     provided in the Credit Agreement (without duplication of (a) above); and

          (c) interest on the principal balance hereof from time to time
     outstanding from the Closing Date under the Credit Agreement through and
     including the Revolving Credit Loan Maturity Date hereof at the times and
     at the rate provided in the Credit Agreement.

     This Note evidences borrowings under and has been issued by the Borrower in
accordance with the terms of the Credit Agreement. The Bank and any holder
hereof is entitled to the benefits of the Credit Agreement, the Security
Documents and the other Loan Documents, and may enforce the agreements of the
Borrower contained therein, and any holder hereof may exercise the respective
remedies provided for thereby or otherwise available in respect thereof, all in
accordance with the respective terms thereof. All capitalized terms used in this
Note and not otherwise defined herein shall have the same meanings herein as in
the Credit Agreement.

     The Borrower irrevocably authorizes the Bank to make or cause to be made,
at or about the time of the Drawdown Date of the Revolving Credit Loans or at
the time of receipt of any payment of principal of this Note, an appropriate
notation on the grid attached to this Note, or the continuation of such grid, or
any other similar record, including computer records, reflecting the making of
such Revolving Credit Loans or (as the case may be) the receipt of such payment.
The outstanding amount of the Revolving Credit Loans set forth on the grid
attached to this Note, or the continuation of such grid, or any other similar
record, including computer records, maintained by the Bank with respect to the
Revolving Credit Loans shall be PRIMA

<PAGE>   2
                                      -2-

FACIE evidence of the principal amount thereof owing and unpaid to the Bank, but
the failure to record, or any error in so recording, any such amount on any such
grid, continuation or other record shall not limit or otherwise affect the
obligation of the Borrower hereunder or under the Credit Agreement to make
payments of principal of and interest on this Note when due.

     The Borrower has the right in certain circumstances and the obligation
under certain other circumstances to prepay the whole or part of the principal
of this Note on the terms and conditions specified in the Credit Agreement.

     If any one or more of the Events of Default shall exist, the entire unpaid
principal amount of this Note and all of the unpaid interest accrued thereon may
become or be declared due and payable in the manner and with the effect provided
in the Credit Agreement.

     No delay or omission on the part of the Bank or any holder hereof in
exercising any right hereunder shall operate as a waiver of such right or of any
other rights of the Bank or such holder, nor shall any delay, omission or waiver
on any one occasion be deemed a bar or waiver of the same or any other right on
any further occasion.

     The Borrower waives presentment, demand, notice, protest and all other
demands and notices in connection with the delivery, acceptance, performance,
default or enforcement of this Note, and assents to any extension or
postponement of the time of payment or any other indulgence, to any
substitution, exchange or release of collateral and to the addition or release
of any other party or person primarily or secondarily liable.

     THIS NOTE AND THE OBLIGATIONS OF THE BORROWER HEREUNDER SHALL FOR ALL
PURPOSES BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE
COMMONWEALTH OF MASSACHUSETTS (EXCLUDING THE LAWS APPLICABLE TO CONFLICTS OR
CHOICE OF LAW). THE BORROWER AGREES THAT ANY SUIT FOR THE ENFORCEMENT OF THIS
NOTE MAY BE BROUGHT IN THE COURTS OF THE COMMONWEALTH OF MASSACHUSETTS OR ANY
FEDERAL COURT SITTING THEREIN AND THE CONSENT TO THE NONEXCLUSIVE JURISDICTION
OF SUCH COURT AND THE SERVICE OF PROCESS IN ANY SUCH SUIT BEING MADE UPON THE
BORROWER BY MAIL AT THE ADDRESS SPECIFIED IN SS.13 OF THE CREDIT AGREEMENT. THE
BORROWER HEREBY WAIVES ANY OBJECTION THAT IT MAY NOW OR HEREAFTER HAVE TO THE
VENUE OF ANY SUCH SUIT OR ANY SUCH COURT OR THAT SUCH SUIT IS BROUGHT IN AN
INCONVENIENT COURT.

     This Note shall be deemed to take effect as a sealed instrument under the
laws of the Commonwealth of Massachusetts.

<PAGE>   3
                                      -3-

     IN WITNESS WHEREOF, the undersigned has caused this Revolving Credit Note
to be signed in its corporate name by its duly authorized officer as of the day
and year first above written.

                                   EROOM TECHNOLOGY, INC.

                                   By: /s/ Robert L. Lentz
                                       -----------------------------------------
                                       Title: Senior Vice President and CFO

<PAGE>   4

<TABLE>
<CAPTION>
=================== ==================== ======================== ==================== ====================
                                                Amount of             Balance of
                          Amount             Principal Paid            Principal            Notation
       Date               of Loan              or Prepaid               Unpaid              Made By:
=================== ==================== ======================== ==================== ====================
<S>                 <C>                  <C>                      <C>                  <C>

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</TABLE><PAGE>   1
                                                                   Exhibit 10.19

                                 EQUIPMENT NOTE

$1,500,000.00                                                September 22, 2000

     FOR VALUE RECEIVED, the undersigned, EROOM TECHNOLOGY, INC., a Delaware
corporation (the "Borrower"), hereby promises to pay to the order of FLEET
NATIONAL BANK, a national banking association (the "Bank") at the Bank's head
office at 100 Federal Street, Boston, Massachusetts 02110:

          (a) prior to or on the Equipment Loan Maturity Date the principal
     amount of One Million Five Hundred Thousand and 00/100 Dollars
     ($1,500,000.00) or, if less, the aggregate unpaid principal amount of
     Equipment Loan advanced by the Bank to the Borrower pursuant to the Credit
     Agreement dated of even date herewith (as amended and in effect from time
     to time, the "Credit Agreement"), between the Borrower and the Bank;

          (b) the principal outstanding hereunder from time to time at the times
     provided in the Credit Agreement (without duplication of (a) above); and

          (c) interest on the principal balance hereof from time to time
     outstanding from the Closing Date under the Credit Agreement through and
     including the Equipment Loan Maturity Date hereof at the times and at the
     rate provided in the Credit Agreement.

     This Note evidences borrowings under and has been issued by the Borrower in
accordance with the terms of the Credit Agreement. The Bank and any holder
hereof is entitled to the benefits of the Credit Agreement, the Security
Documents and the other Loan Documents, and may enforce the agreements of the
Borrower contained therein, and any holder hereof may exercise the respective
remedies provided for thereby or otherwise available in respect thereof, all in
accordance with the respective terms thereof. All capitalized terms used in this
Note and not otherwise defined herein shall have the same meanings herein as in
the Credit Agreement.

     The Borrower irrevocably authorizes the Bank to make or cause to be made,
at or about the time of the Drawdown Date of the Equipment Loan or at the time
of receipt of any payment of principal of this Note, an appropriate notation on
the grid attached to this Note, or the continuation of such grid, or any other
similar record, including computer records, reflecting the making of such
Equipment Loan or (as the case may be) the receipt of such payment. The
outstanding amount of the Equipment Loan set forth on the grid attached to this
Note, or the continuation of such grid, or any other similar record, including
computer records, maintained by the Bank with respect to the Equipment Loan
shall be PRIMA FACIE evidence of the

<PAGE>   2
                                      -2-

principal amount thereof owing and unpaid to the Bank, but the failure to
record, or any error in so recording, any such amount on any such grid,
continuation or other record shall not limit or otherwise affect the obligation
of the Borrower hereunder or under the Credit Agreement to make payments of
principal of and interest on this Note when due.

     The Borrower has the right in certain circumstances and the obligation
under certain other circumstances to prepay the whole or part of the principal
of this Note on the terms and conditions specified in the Credit Agreement.

     If any one or more of the Events of Default shall exist, the entire unpaid
principal amount of this Note and all of the unpaid interest accrued thereon may
become or be declared due and payable in the manner and with the effect provided
in the Credit Agreement.

     No delay or omission on the part of the Bank or any holder hereof in
exercising any right hereunder shall operate as a waiver of such right or of any
other rights of the Bank or such holder, nor shall any delay, omission or waiver
on any one occasion be deemed a bar or waiver of the same or any other right on
any further occasion.

     The Borrower waives presentment, demand, notice, protest and all other
demands and notices in connection with the delivery, acceptance, performance,
default or enforcement of this Note, and assents to any extension or
postponement of the time of payment or any other indulgence, to any
substitution, exchange or release of collateral and to the addition or release
of any other party or person primarily or secondarily liable.

     THIS NOTE AND THE OBLIGATIONS OF THE BORROWER HEREUNDER SHALL FOR ALL
PURPOSES BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE
COMMONWEALTH OF MASSACHUSETTS (EXCLUDING THE LAWS APPLICABLE TO CONFLICTS OR
CHOICE OF LAW). THE BORROWER AGREES THAT ANY SUIT FOR THE ENFORCEMENT OF THIS
NOTE MAY BE BROUGHT IN THE COURTS OF THE COMMONWEALTH OF MASSACHUSETTS OR ANY
FEDERAL COURT SITTING THEREIN AND THE CONSENT TO THE NONEXCLUSIVE JURISDICTION
OF SUCH COURT AND THE SERVICE OF PROCESS IN ANY SUCH SUIT BEING MADE UPON THE
BORROWER BY MAIL AT THE ADDRESS SPECIFIED IN SS.13 OF THE CREDIT AGREEMENT. THE
BORROWER HEREBY WAIVES ANY OBJECTION THAT IT MAY NOW OR HEREAFTER HAVE TO THE
VENUE OF ANY SUCH SUIT OR ANY SUCH COURT OR THAT SUCH SUIT IS BROUGHT IN AN
INCONVENIENT COURT.

     This Note shall be deemed to take effect as a sealed instrument under the
laws of the Commonwealth of Massachusetts.

<PAGE>   3
                                      -3-

     IN WITNESS WHEREOF, the undersigned has caused this Equipment Note to be
signed in its corporate name by its duly authorized officer as of the day and
year first above written.

                                   EROOM TECHNOLOGY, INC.

                                   By: /s/ Robert L. Lentz
                                       -----------------------------------------
                                       Title: Senior Vice President and CFO
<PAGE>   4
<TABLE>
================== ==================== ======================== ==================== ====================
                                                Amount of             Balance of
                          Amount             Principal Paid            Principal            Notation
       Date               of Loan              or Prepaid               Unpaid              Made By:
=================== ==================== ======================== ==================== ====================
<S>                 <C>                  <C>                      <C>                  <C>

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</TABLE>

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