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IndustrySoftware industry
Founded1993; 28 years ago (1993)
WebsiteCompany website

Mainsoft is a software company, founded in 1993, that develops interoperability software products for Microsoft Windows and Linux/Unix platforms.[1]


Mainsoft was founded in 1993, mainly to propose integration products between Windows and other systems.

Mainsoft was one of the main providers for the Microsoft Windows Interface Source Environment (WISE) program, a licensing program from Microsoft which allowed developers to recompile and run Windows-based applications on UNIX and Macintosh platforms.[2] WISE software development kits (SDKs) were not directly provided by Microsoft. Instead Microsoft established partnerships to several software providers which in turn sold WISE SDKs to end-users.

After the WISE program, Microsoft extended its agreements with Mainsoft to port Windows Media Player 6.3 and Internet Explorer to Unix.[3]

Since then, Mainsoft activity shifted to integration of Microsoft SharePoint into IBM products[4][5][6] (IBM Lotus Notes, IBM WebSphere, Rational Jazz) and products focusing on .NET Framework and JavaEE.

According to its LinkedIn profile, Mainsoft Corporation changed its name to ( in 2010.[7]

Windows source code leak[edit]

To be able to develop WISE SDKs, software providers needed to have access to Windows internals source code. In 2004, more than 30000 source files from Windows 2000 and Windows NT 4.0 were leaked to the internet. It was later discovered that the source of the leak originated from Mainsoft.[8][9]

See also[edit]


  1. ^ "About Mainsoft". Archived from the original on 2013-01-28. Retrieved 2009-07-03.
  2. ^ "Windows Interface Source Environment (WISE)". January 1995. Archived from the original on 2008-03-30. Retrieved 2008-04-26.
  3. ^ "Windows Source Leak Traces Back to Mainsoft". 2004-02-13. Retrieved 2008-04-26. Mainsoft extended its WISE agreement with Microsoft in March 2000 to include access to the Windows 2000 source. Microsoft subsequently employed Mainsoft to port Windows Media Player 6.3 and Internet Explorer to Unix.
  4. ^ "SharePoint Integrator – Product Suite". Archived from the original on 2013-01-28. Retrieved 2009-07-03.
  5. ^ "Mainsoft links Microsoft SharePoint, IBM Jazz". 2009-03-17. Retrieved 2009-07-03.
  6. ^ "Sharepoint gets Notes 8.5 integration from Mainsoft". 2009-06-17. Retrieved 2009-07-03.
  7. ^ "Mainsoft (renamed". Retrieved 2014-01-01.
  8. ^ "Mainsoft Eyed as Windows Source Code Leak". 2004-02-13. Retrieved 2009-07-03.
  9. ^ "Microsoft Updates Code Leak Statement, Mainsoft Fingered". 2004-02-19. Archived from the original on 2010-02-01. Retrieved 2009-07-03.

External links[edit]