-**geometry**[Tomas Akenine-Moller snippets](http://fileadmin.cs.lth.se/cs/Personal/Tomas_Akenine-Moller/code/): various 3D intersection calculations, not lib-ified (public domain)
-**geometry**[Clipper](http://www.angusj.com/delphi/clipper.php): line & polygon clipping & offsetting (Boost license)
-_**data structures**[PackedArray](https://github.com/gpakosz/PackedArray): memory-efficient array of elements with non-pow2 bitcount (WTFPL v2 license)_
-**data structures**[PackedArray](https://github.com/gpakosz/PackedArray): memory-efficient array of elements with non-pow2 bitcount (WTFPL v2 license)
-**data structures**; **algorithms**[minilibs](https://github.com/ccxvii/minilibs): two-file regex, binary tree (public domain)
-**files & filenames**[whereami](https://github.com/gpakosz/whereami): get path/filename of executable or module (WTFPL v2 license)