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SANTA CLARA, Calif., February 2, 2006—WebEx Communications, Inc. (Nasdaq: WEBX), the leading provider of on-demand collaborative business applications, today announced financial results for the fourth quarter of 2005 and year ended December 31, 2005. Revenue For the fourth quarter of 2005, revenue was $83.7 million, including $3.2 million from services acquired in the Intranets.com acquisition. Revenue in the fourth quarter of 2005 represented a 24% increase from $67.7 million in the fourth quarter of 2004. For the year 2005, revenue was $308.4 million, a 24% increase from $249.1 million in the year 2004. GAAP Earnings For the fourth quarter of 2005, net income on a GAAP basis was $13.3 million and diluted earnings per share were $0.28, compared to $15.8 million and diluted earnings per share of $0.34 for the fourth quarter of 2004. The fourth quarter of 2004 included a tax benefit of $3.8 million or $0.08 per diluted share, associated with the release of a valuation allowance for net operating loss carryforwards. For the year 2005, net income was $52.7 million and diluted earnings per share were $1.10, compared to $47.9 million and diluted earnings per share of $1.03 for the year 2004. Again, the results for the year 2004 included a tax benefit of $3.8 million or $0.08 per diluted share. Non-GAAP Earnings For the fourth quarter of 2005, net income on a non-GAAP basis was $14.2 million, a 17% increase over the $12.1 million from the fourth quarter of 2004. Diluted earnings per share were $0.30 in the fourth quarter of 2005, a 15% increase from $0.26 per share in the fourth quarter of 2004. Non-GAAP EPS excludes the 2004 tax benefit, stock based compensation and certain expenses associated with the acquisition of Intranets.com, such as the non-cash amortization of intangible assets, certain employee compensation and the write-off of in-process research and development costs. For the year 2005, net income on the same non-GAAP basis was $54.0 million, a 21% increase from $44.5 million for the year 2004. Diluted earnings per share in 2005 were $1.13, an 18% increase from $0.96 per share in the year 2004. Cash Cash and short-term investments at end of the fourth quarter of 2005 were $197.2 million. Cash flow from operations was $15.5 million, partially offset by $6.1 million of capital expenditures, yielding free cash flow of $9.4 million for the three months ended December 31, 2005. During the fourth quarter of 2005, WebEx spent approximately $14.1 million under its stock buyback program, repurchasing approximately 610,000 shares of common stock. WebEx received $7.7 million in cash from stock issuances under employee stock plans during the fourth quarter of 2005. “I am pleased to report that the fourth quarter of 2005 was the strongest new order booking quarter in the history of WebEx,” said Subrah Iyar chairman and chief executive officer of WebEx. “We added a record of nearly 1,000 net new customers for our core applications. During the fourth quarter we also significantly expanded our on-demand applications suite with new products that included WebEx WebOffice, MeetMeNow and PCNow. We enter 2006 with our strongest product line ever.” Guidance The following contains forward-looking guidance regarding WebEx’s financial outlook. The following statements are based on current expectations. For the first quarter of 2006, WebEx anticipates revenues in the range of $85 to $87 million, GAAP EPS in the range of $0.16 to $0.18 and Non-GAAP EPS in the range of $0.29 to $0.31. Non-GAAP EPS excludes stock based compensation and certain expenses associated with the acquisition of Intranets.com, such as the non-cash amortization of intangible assets and certain employee compensation expenses. On a full year basis for 2006, WebEx re-affirms anticipated revenues in the range of $370 to $385 million. WebEx anticipates GAAP EPS in the range of $0.84 to $0.94, and Non-GAAP EPS in the range of $1.30 to $1.40, after excluding stock based compensation and certain expenses associated with the acquisition of Intranets.com, as described above. Conference Call Management will host the quarterly WebEx online meeting to discuss the results today February 2, 2006, beginning at 5:00 p.m. Eastern time. In conjunction with the audio call, there will be a WebEx meeting for the visual part of the presentation. Interested parties may participate in the WebEx online meeting in one of the two ways: • To join the WebEx online meeting and listen to the audio via the computer (WebEx VoIP), please go to http://webex.com/q4_earnings_voip • To join the WebEx online meeting and listen to the audio via the telephone, please go to http://webex.com/q4_earnings_tele and call 617-614-3933 and enter passcode 90504408. For those unable to participate in the live WebEx meeting, a replay will be available beginning one hour after the conclusion of the meeting. To replay the recorded WebEx meeting, go to http://webex.com/q4_replay or to replay the audio only, call +1-617-801-6888 and enter reservation number 90504408. Non-GAAP Financial Measures This press release includes financial measures for earnings per share and net income for our results for the fourth quarter of 2004 and the year 2004, the fourth quarter of 2005 and the year 2005 and guidance for the first quarter of 2006 and the year 2006 that have not been calculated in accordance with generally accepted accounting principles (GAAP). These differ from GAAP in that they exclude expenses associated with stock based compensation, tax benefits associated with the release of a valuation allowance for net operating loss carryforwards, and certain expenses from the acquisition of Intranets.com, including the effects of non-cash amortization of intangible assets, certain employee compensation and the write off of in-process research and development. WebEx believes that providing these non-GAAP financial measurements is useful to its investors because they provide a consistent basis for comparison of WebEx’s financial condition and results of operations between quarters, which comparison is not influenced by changes in accounting rules for stock based compensation, certain tax benefits and acquisition related expenses associated with the purchase of Intranets.com. The presentation of this additional information is not meant to be considered in isolation or as a substitute for earnings per share or net income calculated in accordance with GAAP. A reconciliation of these GAAP and non-GAAP financial measures is included in the attached tables. About WebEx Communications
WebEx Communications, Inc. is the global leader of on-demand applications for collaborative business on the web. WebEx applications are used across the enterprise in sales, support, training, marketing, engineering and product design. WebEx delivers its range of applications over the WebEx MediaTone Network, a global network specifically designed for secure delivery of on-demand applications. WebEx Communications is based in Santa Clara, California and has regional headquarters in Europe, Asia and Australia. Please call toll free 877-509-3239 or visit www.webex.com for more information.

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This press release contains forward looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements may be identified by use of the terms anticipates, believes, continue, could, estimates, expects, intends, may, plans, potential, predicts, should or will, or the negative of those terms or similar expressions. These forward-looking statements are subject to significant risks and uncertainties. Actual results may differ materially from those described in such statements as a result of these risks and uncertainties. In particular, these forward looking statements include, but are not limited to, statements regarding guidance for the first quarter of 2006 and the year 2006 on anticipated revenues and earnings per share. Factors which could contribute to risks and uncertainties include, but are not limited to the failure of WebEx to meet financial expectations, decrease in demand for WebEx services, the failure of WebEx to meet projections in domestic and international direct sales activity, channel sales, customer retention and expense control, failures and interruptions in the software and systems underlying WebEx’s services, the effects of competitive offerings, and additional expenses associated with the further integration of Intranets.com. A fuller discussion of the risks and uncertainties that could affect WebEx Communications, Inc. are more fully set forth in WebEx Communications, Inc.’s filings with the Securities and Exchange Commission, including WebEx’s Form 10-Q filed on November 8, 2005. WebEx Communications, Inc. assumes no obligation to update forward-looking information contained in this press release.

MediaTone is a trademark of WebEx Communications, Inc.