As filed with the Securities and Exchange Commission on June 8, 2007

Registration No. 333-67580

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

POST-EFFECTIVE AMENDMENT NO. 1 TO

FORM S-3

REGISTRATION STATEMENT

Under

THE SECURITIES ACT OF 1933

WEBEX COMMUNICATIONS, INC.

(Exact name of registrant as specified in its charter)

Delaware	77-0548319
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

David Farrington

Vice President

WebEx Communications, Inc.

3979 Freedom Circle

Santa Clara, CA 95054

(408) 435-7000

(Name, address and telephone number, including area code, of agent for service)

Approximate date of commencement of proposed sale to the public:    Not applicable.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box.   ¨

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box.   x

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.   ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.   ¨

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box.   ¨

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.   ¨

EXPLANATORY NOTE:

REMOVAL OF SECURITIES FROM REGISTRATION

The offering contemplated by this Registration Statement on Form S-3 (the “Registration Statement”) has terminated. Pursuant to the undertakings contained in Part II of the Registration Statement, the Registrant is removing from registration, by means of a post-effective amendment to the Registration Statement (the “Post-Effective Amendment”), any securities registered under the Registration Statement which remained unsold at the termination of the offering.

SIGNATURE

Pursuant to the requirements of the Securities Act of 1933, as amended, and Rule 478 thereunder, the Registrant has duly caused this Post-Effective Amendment to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Santa Clara, State of California, on this 8th day of June, 2007.

WEBEX COMMUNICATIONS, INC.
By:	/s/ David Farrington
	Name:	David Farrington
	Title:	Vice President