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dual-license

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dual-license Wiki Pages

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Dual licensing is a business model for free and open source software. There is usually one copyleft community license such as GNU GPL and a commercial proprietary license sold for companies who do not want to release their source-code of the application derived from it.

FOSS business models

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Content Tagged dual-license

eiffelstudio

EiffelStudio is an IDE for the Eiffel programming language (ECMA-367, ISO/IEC 25436, and ACM Software System Award 2006).

It includes:
  • a compiler
  • a GUI editor
  • a code browsing tool
  • a diagram editor with round-trip
  • a refactoring tool
  • a debugger
  • a profiler
  • Eiffel analysis tools (Metrics, Dependencies, etc.).

Eiffel generates C or CLI for .NET or Mono. Eiffel applies O-O principles and Design by Contract for high-quality software.

Many libraries are included: ADT, network, GUI, database, parsing (including an Eiffel parser), XML, Web, COM, and more.

Asterisk

The popular and extensible open source telephone system in the world, offering flexibility, functionality and features not available in advanced, high-end (high-cost) proprietary business systems. Asterisk® is a hybrid TDM and packet VOIP voice PBX (Private Branch eXchange) and IVR platform with ACD functionality.

Derivatives

Qt

Qt is a toolkit for software developers. It simplifies the task of writing and maintaining GUI (graphical user interface) applications.

Wildfire

Wildfire is an enterprise instant messaging (EIM) server dual-licensed under the Open Source GPL and commercially. It uses the leading open protocol for instant messaging, XMPP (also called Jabber).

Qtopia

Qtopia (former Qt Palmtop Environment) is a platform for linux-based PDAs, Webpads and mobile-phones developed by Trolltech.

License

As most Trolltech products Qtopia is dual licensed under the free License:GPL or closed-source which requires a licensing fee then.

Qtopia-Phone-Edition

Qtopia Phone Edition is a comprehensive application platform and user interface for Linux-based mobile phones.

See Also

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