EXHIBIT 4.2 2.75% Convertible Senior Notes due 2012

Exhibit 4.2

     THE SALE OF THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND ACCORDINGLY, THIS SECURITY MAY NOT BE OFFERED OR SOLD EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER AGREES (1) THAT IT WILL NOT WITHIN THE LATER OF (X) TWO YEARS AFTER THE LATEST ISSUE DATE OF THIS SECURITY AND (Y) THREE MONTHS AFTER IT CEASES TO BE AN AFFILIATE (WITHIN THE MEANING OF RULE 144 UNDER THE SECURITIES ACT) OF THE ISSUER, OFFER, RESELL, PLEDGE OR OTHERWISE TRANSFER THE SECURITY EVIDENCED HEREBY OR THE COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH SECURITY, EXCEPT (A) TO THE ISSUER; (B) UNDER A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT; (C) TO A PERSON THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) THAT IS PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF ANOTHER QUALIFIED INSTITUTIONAL BUYER AND TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, ALL IN COMPLIANCE WITH RULE 144A (IF AVAILABLE); OR (D) UNDER ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT; AND (2) THAT IT WILL, PRIOR TO ANY TRANSFER OF THIS SECURITY WITHIN THE LATER OF (X) TWO YEARS AFTER THE LATEST ISSUE DATE OF THIS SECURITY AND (Y) THREE MONTHS AFTER IT CEASES TO BE AN AFFILIATE (WITHIN THE MEANING OF RULE 144 ADOPTED UNDER THE SECURITIES ACT) OF THE ISSUER, FURNISH TO THE TRUSTEE AND THE ISSUER SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS MAY BE REQUIRED PURSUANT TO THE INDENTURE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.

     THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

     UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (“DTC”), A NEW YORK CORPORATION, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR

TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL IN AS MUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

2.75% Convertible Senior Notes due 2012

     Borland Software Corporation, a corporation duly organized and validly existing under the laws of the State of Delaware (herein called the “ Company ”), which term includes any successor corporation under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to Cede & Co., or registered assigns, the principal sum of One Hundred and Seventy Five Million United States Dollars ($175,000,000) (which amount may from time to time be increased or decreased by adjustments made on the records of the Trustee, as custodian for the Depositary, in accordance with the rules and procedures of the Depositary) on February 15, 2012. Payment of the principal of this Security shall be made by check mailed to the address of the Holder of this Security specified in the register of Securities, or, at the option of the Company, by wire transfer in immediately available funds, in such lawful money of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts.

     The issue date of this Security is February 6, 2007.

     Reference is made to the further provisions of this Security set forth on the reverse hereof, including, without limitation, provisions giving the Holder the right to convert this Security into Common Stock of the Company and to require the Company to repurchase this Security upon certain events, in each case, on the terms and subject to the limitations referred to on the reverse hereof and as more fully specified in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. Capitalized terms used but not defined herein shall have such meanings as are ascribed to such terms in the Indenture.

     This Security shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be construed in accordance with and governed by the laws of said State.

     This Security shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually signed by the Trustee or a duly authorized authenticating agent under the Indenture.

     IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.

BORLAND SOFTWARE CORPORATION

2.75% Convertible Senior Notes due 2012

     This Security is one of a duly authorized issue of Securities of the Company, designated as its 2.75% Convertible Senior Notes due 2012 (the “ Securities ”), all issued or to be issued under and pursuant to an Indenture dated as of February 6, 2007 (the “ Indenture ”), between the Company and U.S. Bank National Association (the “ Trustee ”), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the Holders of the Securities.

      Interest . The Securities will bear interest at a rate of 2.75% per year. Interest on the Securities will accrue from February 6, 2007. Interest will be payable semiannually in arrears on February 15 and August 15, beginning August 15, 2007, and at maturity.

     Interest will be paid to the person in whose name a Security is registered at the close of business on the February 1 or August 1, as the case may be, immediately preceding the relevant Interest Payment Date. Interest on the Securities will be computed on the basis of a 360-day year composed of twelve 30-day months.

      Ranking . The Securities rank equally in right of payment with all the Company’s existing and future unsecured senior debt and are senior in right of payment to all of the Company’s future subordinated debt, if any. The Securities are effectively subordinated to all of debt and other liabilities, including trade payables and lease obligations, if any, of the Company’s subsidiaries.

      Redemption at the Option of the Company . The Company may not redeem any of the Securities at its option prior to maturity.

      Repurchase by the Company at the Option of the Holder Upon a Fundamental Change . Subject to the terms and conditions of the Indenture, the Company shall become obligated, at the option of the Holder, to repurchase the Securities if a Fundamental Change occurs at any time prior to the Stated Maturity at 100% of the Principal Amount plus accrued and unpaid interest, including Additional Interest, if any, to, but excluding, the Fundamental Change Repurchase Date, which amount will be paid in cash.

      Withdrawal of Fundamental Change Repurchase Notice . Holders have the right to withdraw, in whole or in part, any Fundamental Change Repurchase Notice, as the case may be, by delivering to the Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture.

      Payment of Fundamental Change Repurchase Price . If cash sufficient to pay the Fundamental Change Repurchase Price of all Securities or portions thereof to be repurchased on a Fundamental Change Repurchase Date is deposited with the Paying Agent on the Fundamental Change Repurchase Date, such Securities will cease to be outstanding and interest will cease to accrue on such Securities (or portions thereof) immediately after such Fundamental Change Repurchase Date, and the Holder thereof shall have no other rights as such (other than the right to receive the Fundamental Change Repurchase Price upon surrender of such Security).

      Conversion . Subject to and in compliance w