Kamaelia

Developer(s)| BBC Research & Development
Stable release|

1.0.12.0 / December 30, 2010; 15 years ago (2010-12-30)

Operating system| Cross-platform
License| Apache License
Website| www.kamaelia.org

Kamaelia is a free software/open source Python-based systems-development tool and concurrency framework produced by BBC Research & Development.

Kamaelia applications are produced by linking independent components together. These components communicate entirely through "inboxes" and "outboxes" (queues) largely removing the burdens of thread-safety and IPC from the developer. This also makes components reusable in different systems, allows easy unit testing and results in parallelism (between components) by default.

Components are generally implemented as generators - a method more light-weight than allocating a thread to each (though this is also supported). As a result, switching between the execution of components in Kamaelia systems is very fast.

Applications that have been produced using Kamaelia include a Freeview digital video recorder, a network-shared whiteboard, a 3D GUI, an HTTP Server, an audio mixer, a stream multicasting system and a simple BitTorrent client.[1]

## License change

Kamaelia's License changed in July 2010 [2] from the Mozilla tri-license (MPL, GPL and LGPL) to the Apache License, with a note that usage under the old licensing scheme was permitted if necessary (due to license incompatibilities), given the rationale for change was to make the codebase more usable by developers not less.

## References

1. ↑ Kamaelia BitTorrent and HTTP components
2. ↑ Kamaelia License Change : Apache 2

## External links

* Official website

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