1. DhashPython library to calculate the difference hash (perceptual hash) for a given image, useful for detecting duplicates
2. CountwordsPlaying with counting word frequencies (and performance) in various languages.
4. PybktreePython BK-tree data structure to allow fast querying of "close" matches
5. InihSimple .INI file parser in C, good for embedded systems
6. Pyast64Compile a subset of the Python AST to x64-64 assembler
7. GraphytePython 3 compatible library to send data to a Graphite metrics server (Carbon)
9. GoawkA POSIX-compliant AWK interpreter written in Go
10. BetterwalkBetterWalk, a better and faster os.walk() for Python -- DEPRECATED, see my "scandir" project
11. ScandirBetter directory iterator and faster os.walk(), now in the Python 3.5 stdlib
12. PygitJust enough git (written in Python) to create a repo and push to GitHub
13. cdnuploadUpload your site's static files to a directory or CDN, using content-based hashing
14. mugoMugo, a toy compiler for a subset of Go that can compile itself
15. thirdThird, a small Forth compiler for 8086 DOS