External links
UI framework based on the Fusion/libui.cr library, with elements from watzon/cru.
LibUI based GUI framework for Crystal
A simple Crystal UI framework for terminal interfaces.
The fancyline fork for LoveShell
Readline-esque library with fancy features
Papierkorb's "cute" (event-centric publish/subscribe model) with additions
Framework for developing Games in Crystal
JSON-RPC client and server library
A BitTorrent library in pure Crystal