Discover Germany's Leading Open Source Projects: Explore top-notch open source initiatives hailing from the vibrant tech community of Germany.
oprypin/nightly.link
Downloads the latest "nightly" build/artifact from a continuous testing workflowstefanwille/crystal-redis
Full featured Redis client for Crystaloprypin/crsfml
Crystal bindings to SFML multimedia/game libraryziprandom/graphql-crystal
a graphql implementation for crystalPapierkorb/qt5.cr
Qt5 bindings for Crystal, based on Bindgenlucaong/immutable
Thread-safe, persistent, immutable collections for the Crystal languagewaterlink/active_record.cr
Active Record pattern implementation for Crystal.Papierkorb/bindgen
Binding and wrapper generator for C/C++ librariesjhass/crystal-gobject
gobject-introspection for Crystaldhruvrajvanshi/Moonshine
Web framework for Crystal language [DEPRECATED in favour of kemal]straight-shoota/crinja
Implementation of Jinja2 template language in Crystalporras/crul
Command line HTTP client written in Crystalwaterlink/spec2.cr
Enhanced `spec` testing library for [Crystal](http://crystal-lang.org/).dhruvrajvanshi/crz
Functional programming library for https://github.com/crystal-lang/crystalPapierkorb/fancyline
Readline-esque library with fancy featuresziprandom/cltk
A crystal port of the Ruby Language Toolkitdenisdefreyne/glove
Crystal framework for making gamesjhass/carc.in
Compile & run code inhanneskaeufler/crytic
Mutation testing for crystal.oprypin/crystal-imgui
Crystal bindings to Dear ImGuiPapierkorb/cannon
Lightning fast data serialization and RPC for Crystaldhruvrajvanshi/crystal-futures
Future type implementation for Crystal languagerepomaa/crouter
a standalone router for crystaloprypin/crsfml-examples
Simple games made with CrSFMLsplattael/hashids.cr
A Crystal shard to generate YouTube-like hashes from one or many numbers. Use hashids when you do not want to expose your database ids to the user.waterlink/mocks.cr
General purpose mocking library for Crystal.l3kn/raytracer
CPU Raytracer written in the crystal languageoprypin/crystal-chipmunk
Crystal bindings to Chipmunk, a fast and lightweight 2D game physics libraryspinscale/crystal-aws-lambda
Create and deploy AWS lambdas written in CrystalPapierkorb/torrent
A BitTorrent library in pure Crystaldhruvrajvanshi/crystal-parsec
Parsing DSL for Crystal language inspired by Haskell library Parsecdenisdefreyne/rcpu
VM emulator and assembler written in CrystalPapierkorb/cute
An event-centric publisher/subscribe model for objects inspired by the Qt frameworkmiry/medup
Download all content from Medium and Dev.to to local folderstraight-shoota/sass.cr
Compile Sass/SCSS to CSS in Crystal (libsass binding)jhass/DeBot
My IRC Botcomandeo/crystal-memcached
Memcached client for Crystal languagewaterlink/crystal-mysql
Basic mysql bindings for crystal.Ragmaanir/microtest
Small test framework, because it has power asserts as the only assertion.TPei/circuit_breaker
Implementation of the circuit breaker pattern in crystalCodeSteak/Nuummite
Nuummite is a tiny persistent embedded key-value store for Crystal!splattael/libnotify.cr
Libnotify for Crystaljrester/EBNF.cr
Work with (E)BNF and bison/YACC Grammar: Parsing, FIRST/FOLLOW set, CNF, Conversions, LR and LL parsing tablesrepomaa/ncurses-crystal
ncurses bindings for crystalnilsmartel/Glass
Gui Library written in Crystalporras/session
Cookie based sessions in Crystal HTTP applicationsvypxl/scar
A game engine written in Crystal using crsfmlporras/tlcr
Simple terminal-based client for TLDR pages, written in Crystal. TLDR pages is a collection of simplified and community-driven man pages.simplylu/WeaponizeCrystal
Experiments in weaponizing Crystal for offensive operations.greenbigfrog/discordtipbot
A tip bot for use on discordapp.comstraight-shoota/md2pdf
Convert markdown files to pdf with flexible template and stylesheetstraight-shoota/sanitize
Crystal library for transforming HTML/XML trees to sanitize HTML from untrusted sourcesRagmaanir/soegen
Elasticsearch client library for crystal, similar to rubys stretcher gemstraight-shoota/criss
Instantaneous static site site generator and server in Crystalcocol-project/cocol
Rapid blockchain prototypingwaterlink/timecop.cr
Mock with `Time.now` with the power of time travel, time freeze and time scale.ziprandom/crystal-dfa
A Crystal Implementation of a Thompson NFA/DFA Regex Matcherjhass/github_desktop_notifications
Display your Github notifications via libnotifyAngarsk8/chat-app-demo
Chat application developed with Kemal, React, ES2015 and PostgreSQLoprypin/crystal-imgui-sfml
Crystal bindings to ImGui-SFMLoprypin/critter
Chat bot relaying messages between IRC and GitterTPei/progress_bar.cr
A ProgressBar implementation for the Crystal programming languagedenisdefreyne/inari
A collection of games written in Crystalrepomaa/open_api.cr
Type safe OpenAPI spec librarycomandeo/syslog.cr
Syslog client implementation for Crystalgreyblake/crystal-google_translate
Google Translate client for Crystalwaterlink/query.cr
Query abstraction for Crystal Language. Used by active_record.cr library.greyblake/crystal-magma
Crystal interpretermiry/samples
Practice algorithms and data structure on different languagesporras/mock
Doubles (stubs and mocks) library for Crystal, inspired by the API of rspec-mocksmishushakov/syntaxer
Multi-backend syntax highlighter for CrystalPapierkorb/json_rpc
JSON-RPC client and server libraryoprypin/crystal-dbus
Crystal bindings to D-Buslipanski/keepass
Keepass KDBX v2/v3 parser for Crystalrepomaa/crystal-jsonapi
JSON API serializing for crystalbeanieboi/aws-signer.cr
This library signs your HTTP requests using AWS v4threez/hpdf.cr
Create PDF documents in crystal using libhpdf / libharuwaterlink/quick.cr
QuickCheck implementation for Crystal Languagemntns/sodium
A fast library for graph/network manipulationwonderix/crystal-tds
Papierkorb/fuse
libFUSE bindings for Crystalmarkauskas/http2
HTTP/2 implementation in Crystalstefanwille/crystal-redis-examples
Examples for crystal-redisHadeweka/Crystal2Day
Simple 2D game framework in Crystaloprypin/crystal-raw-gl
Crystal bindings to OpenGL and GLUwaterlink/postgres_adapter.cr
Postgres adapter for [active_record.cr](https://github.com/waterlink/active_record.cr). Uses [crystal-pg](https://github.com/will/crystal-pg) driver.TPei/observable
Implementation of the Observer pattern in crystalgreyblake/crystal-aitk
Artificial Intelligence Tool Kit for Crystal langPapierkorb/toka
A type-safe, object-oriented option parserbadBlackShark/shrkbot
My general purpose Discord bot, that allows you to turn features on or off.rodrigopinto/can_use
๐ค Can I use? CanUse is a minimalist feature toggle/flag for crystal, based on yaml file.waterlink/spec2-mocks.cr
This library connects spec2.cr and mocks.cr, effectively enabling 'have_received' expectation for spec2.Papierkorb/tuntap
TUN/TAP driver for Crystalfabianloewe/crystal-shared-lib
A very simple compilable Crystal library to test https://github.com/hyronx/crystal/tree/feature/shared_libraryoprypin/crystal-fuzzing
Fuzzing for Crystal programming languagedenisdefreyne/rcpu-lang
Language that compiles to RCPU assemblyfabianloewe/plugal
A plugin system relying on Redis written in Crystalporras/store
File based storage library for Crystal (inspired by Ruby's PStore)waterlink/mysql_adapter.cr
Mysql adapter for [active_record.cr](https://github.com/waterlink/active_record.cr). Uses [crystal-mysql library](https://github.com/waterlink/crystal-mysql)repomaa/gpg.cr
GnuPG bindings for crystalLove Open Source and this site? Check out how you can help us