Filed by TIBCO Software Inc.
                                                  Pursuant to Rule 425 under the
                                                          Securities Act of 1933

                                           Subject Company: Talarian Corporation

                                                  Commission File No.: 333-82138

         On March 18, 2002, TIBCO Software Inc. ("TIBCO") and Talarian
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Corporation ("Talarian") issued the following press release with respect to the
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proposed merger of a subsidiary of TIBCO with Talarian pursuant to that certain
Agreement and Plan of Merger, dated as of January 4, 2002, by and among TIBCO,
Panther Acquisition Corp. and Talarian:

                                                                           
TIBCO Press Contact:                Talarian Press Contact:                      Investor Relations Contact:
Caroline Phillips                   Carolyn Robinson                             Michael Magaro
TIBCO Software Inc.                 Talarian Corporation                         TIBCO Software Inc.
(650) 846-5697                      (650) 965-8050 x125                          (650) 846-5428
caroline@tibco.com                  carolyn.robinson@talarian.com                mmagaro@tibco.com
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                TIBCO and Talarian Receive Request for Additional
                    Information Regarding Pending Acquisition

Palo Alto and Los Altos, CA - March 18, 2002- TIBCO Software Inc. (Nasdaq: TIBX)
and Talarian Corporation (Nasdaq: TALR) jointly announced today that they have
received from the U.S. Department of Justice (DOJ) a request for additional
information pertaining to the pending acquisition of Talarian by TIBCO. The
waiting period applicable to the pending acquisition under the Hart-Scott-Rodino
Antitrust Improvements Act will expire 30 days after substantial compliance with
the request for additional information, unless terminated earlier by the
Department of Justice. The companies are continuing to work closely with the
staff of the DOJ with respect to this request. As previously announced, the
closing of the acquisition is subject to satisfaction of the closing conditions
contained in the definitive merger agreement, including approval of Talarian's
stockholders and completion of the Hart-Scott-Rodino process.

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Additional Information And Where You Can Find It

In connection with the proposed acquisition of Talarian by TIBCO, TIBCO filed
with the Securities and Exchange Commission (the "SEC") on February 5, 2002, a
registration statement on Form S-4 that included the preliminary proxy statement
of Talarian and prospectus of TIBCO. TIBCO and Talarian expect to mail a
definitive proxy statement/prospectus about the transaction to Talarian's
stockholders. This proxy statement/prospectus will be filed with the SEC by both
companies. Investors are advised to read both the preliminary and definitive
proxy statement/prospectuses regarding the transaction, because each document
contains and will contain important information. Investors and security holders
may obtain a free copy of the preliminary proxy statement/prospectus and the
definitive proxy statement/prospectus (when it becomes available) and other
documents filed by the companies at the SEC's web site at http://www.sec.gov.
These and such other documents may also be obtained from TIBCO or Talarian by
directing such requests to the companies.



Talarian and its officers and directors may be deemed to be participants in the
solicitation of proxies from stockholders of Talarian with respect to the
transactions contemplated by the agreement. Information regarding such officers
and directors is included in the registration statement on Form S-4 described
above and in Talarian's amended Annual Report on Form 10-K/A for the fiscal year
ending September 30, 2001, filed with the Securities and Exchange Commission on
January 28, 2002. These documents are available free of charge at the SEC's web
site) at http://www.sec.gov and from Talarian.

Forward-Looking Statement:

This document contains forward-looking statements regarding TIBCO's and
Talarian's business, customers, markets served and other factors including the
impact of the products and technology to be acquired, that may affect future
earnings or financial results. Our actual results could differ materially from
those contained in such forward-looking statements. Reasons for why actual
results could differ materially include if TIBCO is unable to successfully
integrate and manage the acquired technology, operations and personnel. In
addition, the success of any continued product introductions will be impacted by
TIBCO's ability to compete. Further, the present and potential relationships of
TIBCO and Talarian with their respective customers may be harmed by the
acquisition. If the acquisition were to fail to close, Talarian's business,
operations and financial condition, and its ability to retain its customers,
suppliers and employees, could be materially and adversely affected. In
addition, if TIBCO's planned allocation of the purchase price to the purchased
assets changes materially from current expectations, the impact of the required
charges could be material to TIBCO's future results of operations. Additional
information concerning factors that could cause our respective actual results to
differ materially from those contained in the forward-looking statements can be
found in the registration statement on Form S-4 filed by TIBCO on February 5,
2002, including, without limitation, under the caption "Risk Factors." In
addition, TIBCO's and Talarian's filings with the SEC, including but not limited
to TIBCO's most recent reports on Forms 10-Q and 10-K filed with the SEC on
October 5, 2001 and January 30, 2002, and Talarian's Forms 10-Q, 10-K/A and 10-K
filed with the SEC on January 31, 2002, January 28, 2002 and December 21, 2001,
respectively, also identify important risk factors that could cause actual
results to differ from those contained in the forward-looking statements,
including limited independent operating history, history of losses,
unpredictability of future revenue, dependence on a limited number of customers,
TIBCO's relationship with Reuters Group PLC, rapid technological and market
changes, risks associated with infrastructure software and volatility of stock
price. Copies of filings made with the SEC are available through the SEC's
electronic data gather analysis and retrieval system (EDGAR) at www.sec.gov.
Neither TIBCO nor Talarian assumes any obligation to update the forward-looking
statements included in this document.