
- LZHAM : 
  lossless (LZ based) data compression codec with slow compression speed, but with a very competitive (LZMA-like) compression ratio and reasonably fast decompression speeds (slower than zlib, but faster than LZMA).
  https://github.com/richgel999/lzham_codec
  Copyright (c) 2009-2015 Richard Geldreich, Jr. - richgel99@gmail.com
  MIT License

- IndexBufferCompression
  Vertex Cache Optimised Index Buffer Compression : compression of index buffer triangle lists. Better if used after VertexCacheOptimizer.
  https://github.com/ConorStokes/IndexBufferCompression
  Copyright (c) 2014-2015, Conor Stokes
  License : see indexbuffercompression.h
  
- VertexCacheOptimizer
  Optimize triangles indices for vertex cache.
  Original code by Fabien Giesen 
 https://github.com/rygorous/simple-ib-compress
 cf https://fgiesen.wordpress.com/2013/12/14/simple-lossless-index-buffer-compression/
 Implements Tom Forsyth Vertex Cache Optimisation :
 http://home.comcast.net/~tom_forsyth/papers/fast_vert_cache_opt.html



- Eigen 
  C++ template library for linear algebra
  http://eigen.tuxfamily.org/index.php?title=Main_Page
  MPL2 license


- Surface_mesh
  Efficient halfedge data structure for polygon surface mesjes 
  http://graphics.uni-bielefeld.de/publications/imr11/ 
  https://openresearch.cit-ec.de/projects/surface_mesh
  LGPL

