Crystal

Programming language

2014Appeared

static typing, nominative typing, duck typing, inference typingType system

1.22.2Latest version

Facts

Appeared: 2014
Type system: static typing, nominative typing, duck typing, inference typing
Latest version: 1.22.2 (October 30, 2026)
Kind: object-based language
Paradigms: concurrent computing, multi-paradigm programming, object-oriented programming
Developer: Manas Technology Solutions, Ary Borenzweig
Influenced by: C, Ruby, C#, Python, Go, Rust
File extensions: .cr
Licence: Apache Software License 2.0
Platform: Web Assembly, AArch64, IA-32, x86-64
Operating system: macOS, WebAssembly, OpenBSD, FreeBSD, Linux
Influences listed: 6