<PAGE>

                                  EXHIBIT 4.14


        VOID AFTER 5:00 P.M., EASTERN STANDARD TIME ON FEBRUARY 12, 2006

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE OF
THE UNITED STATES. THE SECURITIES REPRESENTED HEREBY MAY NOT BE OFFERED OR SOLD
OR OTHERWISE TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT
FOR THE SECURITIES UNDER APPLICABLE SECURITIES LAWS, OR UNLESS OFFERED, SOLD OR
TRANSFERRED PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION
REQUIREMENTS OF THOSE LAWS.


                        Right to Subscribe for 25,000 American Depositary Shares

Date:   February 12, 2001                                     Warrant No.:   129


                             INSIGNIA SOLUTIONS PLC
                              ADSs PURCHASE WARRANT

         THIS CERTIFIES THAT, for value received, Jefferies & Company, Inc.
("JEFFERIES"), or its registered assigns (the "HOLDER"), is entitled to
subscribe for, from Insignia Solutions plc, a company organized and existing
under the laws of England and Wales (the "COMPANY"), at any time or from time to
time during the period specified in Section 2 hereof, 25,000 fully paid American
depositary shares (the "ADSs" or "SHARES"), each ADS representing one ordinary
share of 20 pence each nominal value of the Company (the "ORDINARY SHARES"), at
an exercise price equal to $5.00 per ADS (the "EXERCISE PRICE") by delivering to
the Company a form of Exercise Agreement (as hereinafter defined) in the form of
EXHIBIT A hereto; PROVIDED, that in no event shall the Exercise Price be less
than the nominal value of each Ordinary Share. This Warrant is being issued
pursuant to that certain Warrant Agreement, dated February 12, 2001 (the
"WARRANT AGREEMENT"), by and between the Company and Jefferies. The number of
ADSs purchasable hereunder (the "WARRANT SHARES") and the Exercise Price are
subject to adjustment as provided herein.

         This Warrant is subject to the following terms, provisions, and
conditions:

         1. MECHANICS OF EXERCISE. Subject to the provisions hereof, including,
without limitation, this Warrant may be exercised as follows:

                  (a) MANNER OF EXERCISE. This Warrant may be exercised by the
Holder, in whole or in part, from time to time, by the surrender of this Warrant
(or evidence of loss, theft, destruction or mutilation thereof in accordance
with Section 7(c) hereof), together with a completed exercise agreement in the
Form of Exercise Agreement attached hereto as EXHIBIT A (the "EXERCISE
AGREEMENT"), to the Company at the Company's principal executive offices (or
such other office or agency of the Company as it may designate by notice to the
Holder), and upon payment to the Company in cash, by certified or official bank
check or by wire transfer for the account of the Company, of the Exercise Price
for the Warrant Shares specified in the Exercise Agreement.

<PAGE>


                  (b) ISSUANCE OF CERTIFICATES. Subject to Section 1(c),
certificates for the Warrant Shares to be so purchased, representing the
aggregate number of Shares specified in the Exercise Agreement, shall be
delivered to the Holder within a reasonable time, not exceeding three (3)
business days, after this Warrant shall have been so exercised. The certificates
to be so delivered shall be in such denominations as may be requested by the
Holder and shall be registered in the name of Holder. If this Warrant shall have
been exercised only in part, then, unless this Warrant has expired, the Company
shall, at its expense, at the time of delivery of such certificates, deliver to
the Holder a new Warrant representing the number of Shares with respect to which
this Warrant shall not then have been exercised. Upon delivery of this Warrant,
the Exercise Agreement and Exercise Price referred to in Section 1(a), the
Holder of this Warrant shall be deemed for all corporate purposes to have become
the holder of record of the Warrant Shares with respect to which this Warrant
has been exercised, irrespective of the date of delivery of this Warrant or the
certificates evidencing such Warrant Shares.

                  (c) EXERCISE DISPUTES. In the case of any dispute with respect
to an exercise, the Company shall promptly issue such number of ADSs as are not
disputed in accordance with this Section. If such dispute involves the
calculation of the Exercise Price, the Company shall submit the disputed
calculations to a nationally recognized independent accounting firm (selected by
the Company and reasonably acceptable to Holder) via facsimile within three (3)
business days of receipt of the Exercise Agreement. The accounting firm shall
audit the calculations and notify the Company and the Holder of the results no
later than two (2) business days from the date it receives the disputed
calculations. The accounting firm's calculation shall be deemed conclusive,
absent manifest error. The Company shall then issue the appropriate number of
ADSs in accordance with this Section. The Company shall bear all reasonable
expenses incurred pursuant to this Section 1(c).

                  (d) FRACTIONAL SHARES. No fractional ADSs are to be issued
upon the exercise of this Warrant, but the Company shall pay a cash adjustment
in respect of any fractional Share which would otherwise be issuable in an
amount equal to the same fraction of the Exercise Price of an ADS (as determined
for exercise of this Warrant into whole ADSs); PROVIDED, THAT in the event that
sufficient funds are not legally available for the payment of such cash
adjustment any fractional ADSs shall be rounded up to the next whole number.

         2. PERIOD OF EXERCISE. This Warrant is exercisable at any time and from
time to time on or after the date hereof and before 5:00 P.M., Eastern Standard
Time on the fifth (5th) anniversary of the date hereof (the "EXERCISE PERIOD").

         3. CERTAIN AGREEMENTS OF THE COMPANY. The Company hereby covenants and
agrees as follows:

                  (a) SHARES TO BE FULLY PAID. All Warrant Shares and Ordinary
Shares that are represented by such Warrant Shares will, upon issuance in
accordance with the terms of this Warrant, be validly issued, fully paid and
free from all taxes, liens, claims and encumbrances and shall be entitled to the
benefits specified in the corresponding American depositary receipts and in the
Deposit Agreement, dated November 17, 1995, as amended, between the Company and
The Bank of New York (the "DEPOSITARY") relating to such ADSs.


                                     2
<PAGE>


                  (b) RESERVATION OF ORDINARY SHARES AND DEPOSIT OF ADSs. During
the Exercise Period, the Company shall at all times have authorized, and
reserved for the purpose of issuance upon exercise of this Warrant, a sufficient
number of Ordinary Shares, which are readily available for deposit with the
Depositary for the purpose of issuance in the form of ADSs upon exercise of this
Warrant, to provide for the exercise of this Warrant.

                  (c) LISTING. The Company shall promptly secure the listing of
the ADSs issuable upon exercise of this Warrant on the Nasdaq National Market
System ("NNM"), as required by Section 4(e) of the Warrant Agreement and on each
such national securities exchange or automated quotation system, if any, on
which ADSs are then listed or become listed and shall maintain, so long as any
other ADSs shall be so listed, such listing of all ADSs from time to time
issuable upon the exercise of this Warrant; and the Company shall so list on
each national securities exchange or automated quotation system, as the case may
be, and shall maintain such listing of any other shares of capital stock of the
Company issuable upon the exercise of this Warrant so long as any shares of the
same class shall be listed on such national securities exchange or automated
quotation system.

                  (d) CERTAIN ACTIONS PROHIBITED. The Company will not, by
amendment of its Memorandum of Association and Articles of Association or
through any reorganization, transfer of assets, consolidation, merger,
dissolution, issue or sale of securities, or any other voluntary action, avoid
or seek to avoid the observance or performance of any of the terms to be
observed or performed by it hereunder, but will at all times in good faith
assist in the carrying out of all the provisions of this Warrant and in the
taking of all such actions as may reasonably be requested by the Holder of this
Warrant in order to protect the exercise privilege of the Holder of this
Warrant, consistent with the tenor and purpose of this Warrant. Without limiting
the generality of the foregoing, the Company (i) will not increase the nominal
value of any Ordinary Shares represented by ADSs receivable upon the exercise of
this Warrant above the Exercise Price then in effect, and (ii) will take all
such actions as may be necessary or appropriate in order that the Company may at
all times validly and legally issue fully paid ADSs upon the exercise of this
Warrant.

         4. ANTIDILUTION PROVISIONS. During the Exercise Period, the Exercise
Price and the number of Warrant Shares shall be subject to adjustment from time
to time as provided in this Section 4. In the event that any adjustment of the
Exercise Price as required herein results in a fraction of a cent, such Exercise
Price shall be rounded up or down to the nearest cent.

                  (a) SUBDIVISION OR PURCHASE PRICE OF SHARES. If the Company,
at any time after the initial issuance of this Warrant, subdivides (by any share
split, share dividend, recapitalization, reorganization, reclassification or
otherwise) its Ordinary Shares into a greater number of shares, then, after the
date of record for effecting such subdivision, the Exercise Price in effect
immediately prior to such subdivision will be proportionately reduced. If the
Company, at any time after the initial issuance of this Warrant, combines (by
reverse share split, recapitalization, reorganization, reclassification or
otherwise) its shares of Ordinary Shares into a smaller number of shares, then,
after the date of record for effecting such combination, the Exercise Price in
effect immediately prior to such combination will be proportionately increased.

                  (b) ADJUSTMENT IN NUMBER OF ADSs. Upon each adjustment of the
Exercise Price pursuant to the provisions of this Section 4, the number of ADSs
issuable upon exercise of


                                    3
<PAGE>


this Warrant shall be adjusted by multiplying a number equal to the Exercise
Price in effect immediately prior to such adjustment by the number of ADSs
issuable upon exercise of this Warrant immediately prior to such adjustment
and dividing the product so obtained by the adjusted Exercise Price.

                  (c) REORGANIZATION, RECLASSIFICATION, CONSOLIDATION, MERGER OR
SALE. Any recapitalization, reorganization, reclassification, consolidation,
merger, sale of all or substantially all of the Company's assets to another
person or other transaction in each case which is effected in such a way that
holders of ADSs and Ordinary Shares are entitled to receive (either directly or
upon subsequent liquidation) shares, securities or assets with respect to or in
exchange for ADSs and Ordinary Shares is referred to herein as an "ORGANIC
CHANGE." Prior to the consummation of any (i) sale of all or substantially all
of the Company's assets to an acquiring person or (ii) other Organic Change
following which the Company is not a surviving entity, the Company will secure
from the person purchasing such assets or the successor resulting from such
Organic Change prior to such Organic Change effective provisions so that each
holder of an ADS Warrant then outstanding shall have the right, by exercising
such Warrant, to purchase the kind and number of shares or other securities or
property receivable upon an occurrence of an Organic Change.

                  (d) DISTRIBUTION OF ASSETS. In case the Company shall declare
or make any distribution of its assets (or rights to acquire its assets) to
holders of its Ordinary Shares and ADSs as a dividend, by way of return of
capital or otherwise (including any dividend or distribution to the Company's
shareholders of cash or shares (or rights to acquire shares) of capital stock of
a subsidiary) (a "DISTRIBUTION"), at any time after the initial issuance of this
Warrant, then the Holder shall be entitled upon exercise of this Warrant for the
purchase of any or all of the ADSs subject hereto, to receive the amount of such
assets (or rights) which would have been payable to the Holder had such Holder
been the holder of such ADSs on the record date for the determination of holders
of Ordinary Shares and ADSs entitled to such Distribution.

                  (e) CERTAIN EVENTS. If any event occurs of the type
contemplated by the provisions of this Section 4 but not expressly provided for
by such provisions, then the Company's Board of Directors will make an
appropriate adjustment in the Exercise Price and the number of ADSs and Ordinary
Shares obtainable upon exercise of this Warrant so as to protect the rights of
the holders of the Warrants; PROVIDED, that no such adjustment pursuant to this
Section 4(e) will increase the Exercise Price or decrease the number of ADSs
obtainable as otherwise determined pursuant to this Section 4.

                  (f) SPECIAL ADJUSTMENT AND NOTICES OF ADJUSTMENT. Upon the
occurrence of any event which requires any adjustment of the Exercise Price,
then, and in each such case, the Company shall give notice thereof to the
Holder, which notice shall state the Exercise Price resulting from such
adjustment and the increase or decrease in the number of Warrant Shares
purchasable at such price upon exercise, setting forth in reasonable detail the
method of calculation and the facts upon which such calculation is based. Such
calculation shall be certified by the chief financial officer of the Company.

                  (g) MINIMUM ADJUSTMENT OF EXERCISE PRICE. No adjustment of the
Exercise Price shall be made in an amount of less than 1% of the Exercise Price
in effect at the time such adjustment is otherwise required to be made, but any
such lesser adjustment shall be carried forward and shall be made at the time
and together with the next subsequent adjustment which, to-


                                4
<PAGE>

gether with any adjustments so carried forward, shall amount to not less than
1% of such Exercise Price.

                  (h)      CERTAIN DEFINITIONS.

                           (i) "ORDINARY SHARES," for purposes of this Section
         4, includes the Ordinary Shares and any additional class of shares of
         the Company having no preference as to dividends or distributions on
         liquidation, provided that the Ordinary Shares represented by the ADSs
         purchasable pursuant to this Warrant shall include only Ordinary Shares
         in respect of which this Warrant is exercisable, or shares resulting
         from any subdivision or combination of such Ordinary Shares, or in the
         case of any reorganization, reclassification, consolidation, merger, or
         sale of the character referred to in Section 4(c) hereof, the shares or
         other securities or property provided for in such Section.

                  (i)      OTHER NOTICES.  In case at any time:

                           (i) the Company shall declare any dividend upon the
         Ordinary Shares payable in shares of any class or make any other
         distribution to the holders of the Ordinary Shares and holders of ADSs;

                           (ii)     the Company shall offer for subscription
         pro rata to the holders of the Ordinary Shares and ADSs any additional
         shares of any class or other rights;

                           (iii) there shall be any capital reorganization of
         the Company, or reclassification of the Ordinary Shares, or
         consolidation or merger of the Company with or into, or sale of all or
         substantially all of its assets to, another corporation or entity; or

                           (iv)     there shall be a voluntary or involuntary
         dissolution, liquidation or winding-up of the Company;

then, in each such case, the Company shall give to the Holder (a) notice of the
date on which the books of the Company shall close or a record shall be taken
for determining the holders of Ordinary Shares and holders of ADSs entitled to
receive any such dividend, distribution, or subscription rights or for
determining the holders of Ordinary Shares entitled to vote and holders of ADSs
entitled to give voting instructions to the Depositary in respect of any such
reorganization, reclassification, consolidation, merger, sale, dissolution,
liquidation or winding-up and (b) in the case of any such reorganization,
reclassification, consolidation, merger, sale, dissolution, liquidation or
winding-up, notice of the date (or, if not then known, a reasonable
approximation thereof by the Company) when the same shall take place. Such
notice shall also specify the date on which the holders of Ordinary Shares and
holders of ADSs shall be entitled to receive such dividend, distribution, or
subscription rights or to exchange their Ordinary Shares and ADSs for stock or
other securities or property deliverable upon such reorganization,
reclassification, consolidation, merger, sale, dissolution, liquidation, or
winding-up, as the case may be. Such notice shall be given at least thirty (30)
days prior to the record date or the date on which the Company's books are
closed in respect thereto, but in no event earlier than public announcement of
such proposed transaction or event. Failure to give any such notice or any
defect therein shall not affect the validity of the proceedings referred to in
clauses (i), (ii), (iii) and (iv) above.


                                 5
<PAGE>


         5. ISSUE TAX. The issuance of certificates for Warrant Shares upon the
exercise of this Warrant shall be made without charge to the Holder or such
shares for any tax in respect of such issue or other costs in respect thereof;
PROVIDED, THAT the Company shall not be required to pay any tax which may be
payable in respect of any transfer involved in the issuance and delivery of any
certificate in a name other than the Holder.

         6. NO RIGHTS OR LIABILITIES AS A SHAREHOLDER. This Warrant shall not
entitle the Holder to any voting rights or other rights as a holder of the
Company's Ordinary Shares or ADSs. No provision of this Warrant, in the absence
of affirmative action by the Holder to purchase Warrant Shares, and no mere
enumeration herein of the rights or privileges of the Holder, shall give rise to
any liability of the Holder for the Exercise Price or as a holder of the
Company's Ordinary Shares or ADSs, whether such liability is asserted by the
Company or by creditors of the Company.

         7.       TRANSFER, EXCHANGE, AND REPLACEMENT OF WARRANT.

                  (a) RESTRICTION ON TRANSFER. This Warrant and the rights
granted to the Holder are transferable, subject to compliance with all
applicable federal and state securities laws, in whole or in part, upon
surrender of this Warrant, together with a properly executed assignment in the
Form of Assignment attached hereto as EXHIBIT B, at the office or agency of the
Company referred to in Section 9. Until due presentment for registration of
transfer on the books of the Company, the Company may treat the registered
holder hereof as the owner and holder hereof for all purposes, and the Company
shall not be affected by any notice to the contrary.

                  (b) WARRANT EXCHANGEABLE FOR DIFFERENT DENOMINATIONS. This
Warrant is exchangeable, upon the surrender hereof by the Holder at the office
or agency of the Company referred to in Section 9 below, for new Warrants, in
the form hereof, of different denominations representing in the aggregate the
right to purchase the number of ADSs which may be purchased hereunder, each of
such new Warrants to represent the right to purchase such number of ADSs as
shall be designated by the Holder of at the time of such surrender.

                  (c) REPLACEMENT OF WARRANT. Upon receipt of evidence
reasonably satisfactory to the Company of the loss, theft, destruction, or
mutilation of this Warrant or, in the case of any such loss, theft, or
destruction, upon delivery, of an indemnity agreement reasonably satisfactory in
form and amount to the Company, or, in the case of any such mutilation, upon
surrender and cancellation of this Warrant, the Company, at its expense, will
execute and deliver, in lieu thereof, a new Warrant, in the form hereof, in such
denominations as Holder may request.

                  (d) CANCELLATION; PAYMENT OF EXPENSES. Upon the surrender of
this Warrant in connection with any transfer, exchange, or replacement as
provided in this Section 7, this Warrant shall be promptly canceled by the
Company. The Company shall pay all issuance taxes (other than securities
transfer taxes) and charges payable in connection with the preparation,
execution, and delivery of Warrants pursuant to this Section 7.

                  (e) WARRANT REGISTER. The Company shall maintain, at its
principal executive offices (or such other office or agency of the Company as it
may designate by notice to the Holder), a register for this Warrant, in which
the Company shall record the name and address of


                                     6
<PAGE>


the person in whose name this Warrant has been issued, as well as the name
and address of each transferee and each prior owner of this Warrant.

         8. REGISTRATION RIGHTS. The initial holder of this Warrant (and
assignees thereof) is entitled to the benefit of such registration rights in
respect of the Warrant Shares as are set forth in the Warrant Agreement.

         9. NOTICES. All notices, requests, demands and other communications
under this Agreement shall be in writing and shall be deemed to have been duly
given (i) on the day of service if served personally on the party to whom notice
is to be given; (ii) on the day of transmission if sent via facsimile
transmission to the facsimile number given below or at the facsimile number
provided by the Holder, and telephonic confirmation of receipt is obtained
promptly after completion of transmission, provided, that a copy shall be sent
via certified mail, return receipt requested, simultaneously with any such
facsimile; (iii) on the business day after delivery to Federal Express or
similar overnight courier or the Express Mail service maintained by the United
States Postal Service; or (iv) on the fifth day after mailing, if mailed to the
party to whom notice is to be given, by first class mail, registered or
certified, postage prepaid and properly addressed, to the party as follows:

                  If to the Company:

                           Insignia Solutions plc
                           41300 Christy Street
                           Fremont, California  94538-3115
                           Telecopier:      (510) 360-3702
                           Attention:       Mr. Richard Noling

                  with a copy to:

                           Baker & McKenzie
                           660 Hansen Way
                           Palo Alto, California  94304
                           Telecopier:      (650) 856-9299
                           Attention:       Corinna Wong, Esq.

and if to the Holder, at such address as Holder shall have provided in writing
to the Company, or at such other address as each such party furnishes by notice
given in accordance with this Section 9.

         10. GOVERNING LAW; JURISDICTION. This Warrant shall be governed by and
construed in accordance with the laws of the State of New York applicable to
contracts made and to be performed in the State of New York. The Company
irrevocably consents to the jurisdiction of the United States federal courts
located in the State of New York in any suit or proceeding based on or arising
under this Warrant and irrevocably agrees that all claims in respect of such
suit or proceeding may be determined in such courts. The Company irrevocably
waives the defense of an inconvenient forum to the maintenance of such suit or
proceeding. The Company agrees that a final nonappealable judgment in any such
suit or proceeding shall be conclusive and may be enforced in other
jurisdictions by suit on such judgment or in any other lawful manner.


                                    7
<PAGE>


         11.      MISCELLANEOUS.

                  (a)      AMENDMENTS. This Warrant and any provision hereof may
only be amended by an instrument in writing signed by the Company and the
Holder.

                  (b)      DESCRIPTIVE HEADINGS. The descriptive headings of the
several Sections of this Warrant are inserted for purposes of reference only,
and shall not affect the meaning or construction of any of the provisions
hereof.

                  (c)      ASSIGNABILITY. This Warrant shall be binding upon the
Company and its successors and assigns and shall inure to the benefit of
Holder and its successors and assigns. The Holder shall notify the Company
upon the assignment of this Warrant.

                              *      *      *


                                     8
<PAGE>


IN WITNESS WHEREOF, the Company has caused this Warrant to be signed by its duly
authorized officer.



                                 INSIGNIA SOLUTIONS plc


                                 By:  /s/  Stephen M. Ambler
                                      -----------------------------------------
                                      Name:  Stephen M. Ambler
                                      Title:    Senior Vice President, Chief
                                                Financial Officer and Secretary

<PAGE>


                                                       EXHIBIT A TO WARRANT
                           FORM OF EXERCISE AGREEMENT

       (To be Executed by the Holder in order to Exercise the Warrant)

         The undersigned hereby irrevocably exercises the right to subscribe for
[_____] of the American depositary shares ("ADSs") of Insignia Solutions plc, a
company organized and existing under the laws of England and Wales, evidenced by
the attached Warrant, and herewith makes payment of the Exercise Price with
respect to such ADSs in full, all in accordance with the conditions and
provisions of said Warrant.

         (i) The undersigned agrees not to offer, sell, transfer or otherwise
dispose of any ADSs obtained on exercise of the Warrant, except under
circumstances that will not result in a violation of the Securities Act of 1933,
as amended, or any state securities laws.

         (ii) The undersigned requests that the American depositary receipts for
such ADSs be issued, and a Warrant representing any unexercised portion hereof
be issued, pursuant to the Warrant in the name of the Holder (or such other
person or persons indicated below) and delivered to the undersigned (or
designee(s) at the address (or addresses) set forth below:


Date:
     ----------------------                   -------------------------------
                                              Signature of Holder


                                              -------------------------------
                                              Name of Holder (Print)

                                              Address:


                                              -------------------------------

                                              -------------------------------

<PAGE>


                                                        EXHIBIT B TO WARRANT


                               FORM OF ASSIGNMENT

         FOR VALUE RECEIVED, the undersigned hereby sells, assigns, and
transfers all rights of the undersigned under the within Warrant, with respect
to the number of ADSs covered thereby set forth hereinbelow, to:

<TABLE>
<CAPTION>

                  NAME OF ASSIGNEE          ADDRESS           NO. OF SHARES
                  ----------------          -------           -------------
                  <S>                       <C>               <C>

</TABLE>

and hereby irrevocably constitutes and appoints _______________ as agent and
attorney-in-fact to transfer said Warrant on the books of the within-named
corporation, with full power of substitution in the premises.

Date:____________   ____,

In the presence of


-------------------------------

                                   Name:
                                        -------------------------------------

                                   Signature:
                                             --------------------------------


                                   ------------------------------------------
                                   TITLE OF SIGNING OFFICER OR AGENT (IF ANY)


                                   Address:


                                   ------------------------------------------


                                   ------------------------------------------