BSD License

The Arithmetic Coder and PPM code base and tutorial are Open Source licensed under: This is the license used by Apache. Use is free as in free beer and free speech. Attributions appreicated, but not required.

Colloquial Arithmetic Coder and PPM License

Copyright (c) 2002, Bob Carpenter.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

    * Redistributions of source code must retain the above copyright
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      with the distribution.  

    * Neither the name of colloquial.com nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

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