crystal-lang/crystal
The Crystal Programming Language
crystal is an open source Crystal project by crystal-lang, created in November 2012. It has 20,464 stars and 1,723 forks on GitHub and is released under the Apache-2.0 license. Its most recent commit was on Oct 20, 2026, and it has 1,758 open issues, 17 of them labelled “good first issue”, which makes it a friendly place to start contributing. Its GitHub topics include crystal, hacktoberfest, compiler, and crystal-language. On FindOpenSource.dev it is listed under Languages & Runtimes.
by golang
The Go programming language
by charlax
A collection of learning resources for curious software engineers
by JuliaLang
The Julia Programming Language
