205. crunCrystal Run : shebang wrapper for Crystal
206. matrixA Matrix class for the Crystal programming language.
208. py2crPython3 to Crystal Translation using Python AST Walker
209. uuixA tiny (<1KB) and fast UUID (v4) generator for Crystal
210. nanoid.crCrystal implementation of Nanoid, secure URL-friendly unique ID generator.
212. tinycrThe challenge for creating a tiny binary in crystal.
213. rosettaA blazing fast internationalization (i18n) library for Crystal with compile-time key lookup.
215. cache-hashA simple key/value store where pairs can expire after a specified interval
220. uteroThe Operating System (for x86_64) written in Crystal as much as possible
224. mppThe mini pre processor parses files and resolves C-style #include and #define macros
225. carbonEmail library for Crystal. Testable, adapter-based, and catches bugs for you. Comes with an adapter for SendGrid.
231. humanize timeAdds the humanize method to reports the approximate distance in time between two Time. humanize supports i18n translations too so it can be used in internationalized apps.
232. cuteAn event-centric publisher/subscribe model for objects inspired by the Qt framework
234. burocracia.crNo dependency Crystal shard to validate, generate and format Brazilian burocracias such as CPF, CNPJ and CEP
235. crystal-webCrystal bindings to the Web APIs for building front-end applications with WebAssembly
240. moneyCrystal shard for dealing with money and currency conversion
241. shivneriComponent based MVC web framework based on fort architecture targeting good code structures, modularity & performance.
244. praetorianA minimalist Crystal authorization system inspired by https://github.com/varvet/pundit.
249. crystal-molinilloA generic dependency resolution algorithm. Ported from https://github.com/CocoaPods/Molinillo/