1. SpyllsPure Python spell-checker, (almost) full port of Hunspell
2. Time calcSimple time arithmetics in a modern, readable, idiomatic, no-"magic" Ruby.
3. HmIdiomatic Ruby hash transformations
5. Geo coordSimple yet useful Geo Coordinates class for Ruby
6. WheretzFast and precise time zone by geo coordinates lookup
8. WhatthegemRuby gem information, stats and usage for your terminal
9. ClioClio — better Friendfeed backup tool
10. Time math2Small library for operations with time steps (like "next day", "floor to hour" and so on)
12. shoExperimental post-framework view library
14. lmsaLet's Make Something Awesome! — project ideas repo for mentees
17. ruby as aplConway's game of life in one statement of idiomatic Ruby... ported from APL
20. object enumerateObject#enumerate Ruby core proposal demo. Merged in Ruby 2.7 as Enumerator.produce
21. linkhumURL auto-linker with reasonable and humane behavior