• Extensions - OpenOffice.org Wiki
  OpenOffice.org Extensions OpenOffice.org offers the possibility to develop independent 3rd party extensions. The categories of extensions reach from Basic libraries, packages with Java/JavaScript or Python macros to more sophisticated extensions in form of UNO components implemented in Java, C++ or Python. Even the last category of extensions subdivide in general UNO components providing new implementations for existing functional areas or specialized components like Calc Add-Ins, Add-Ons, DataPilots, Chart Add-Ins or linguistic components (e.g. Spellchecker, Hyphenator or Thesaurus)
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• GIMP Plug-In Registry
  A repository of optional extensions for the GIMP
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• Opera equivalents to Firefox extensions - Virtuelvis
  Roger Johansson lists his favourite Firefox extensions — some of which are quite common. Let’s review the extensions he lists, and find their equivalent in Opera
  in opera with opera roger johansson lists favourite firefox extensions review by 2 users
• Opera equivalents to Firefox extensions II - Virtuelvis
  In January, I wrote about some Opera equivalents to Firefox extensions. This is an updated version, covering many more common Firefox extensions and their equivalent features in Opera.
  in opera with opera january wrote equivalents firefox extensions updated version by 2 users
• SourceForge.net: Python for Windows extensions
  Python Extensions for Windows
  Get Python for Windows extensions at SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory
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