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Webkosa is the open source edition of Webcrossing.

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Webkosa is the public, open source edition of the popular Webcrossing server which has been used by thousands of sites for online communities, social networks and agile Web 2.0 object-oriented development.

Webkosa includes its own integrated web server, email server, ftp server, out-of-the-box forums with discussions, users and authentication, post-by-email and numerous other user and community-oriented features to get you started with development, or use as is.

Webkosa includes a native object-oriented NoSQL database, which is scriptable with its enhanced server-side JavaScript.

Webkosa's all-in-one architecture makes deployment easy with no "extra servers" required. By modifying and adding scripts it is infinitely customizable.

Webkosa is sponsored by Elliptics, Ltd., the owner of the Webcrossing software product line, and was launched by both Elliptics, Ltd. and Bayspire, Inc.

Webkosa Web Site


  • Native object-oriented NoSQL database scriptable with JavaScript
  • Out-of-the-box forums with discussions
  • Automated archiving of old discussions
  • Users and authentication
  • Integrated web server
  • Integrated mail server (SMTP/IMAP/POP3), including post by email
  • Integrated NNTP server integrated with forums
  • Integrated FTP server
  • Integrated ACL (access control lists)
  • All-in-one architecture
  • Multi-node cluster support


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Additional Project Details


English, Japanese

Intended Audience

Advanced End Users, System Administrators, Developers

User Interface


Programming Language

C, JavaScript



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