๐Ÿ‡ฉ๐Ÿ‡ช Made in Germany

Discover Germany's Leading Open Source Projects: Explore top-notch open source initiatives hailing from the vibrant tech community of Germany.

TOP Crystal Projects

1
oprypin/nightly.link

oprypin/nightly.link

Downloads the latest "nightly" build/artifact from a continuous testing workflow
Crystal
603
star
2
stefanwille/crystal-redis

stefanwille/crystal-redis

Full featured Redis client for Crystal
Crystal
379
star
3
oprypin/crsfml

oprypin/crsfml

Crystal bindings to SFML multimedia/game library
Crystal
341
star
4
ziprandom/graphql-crystal

ziprandom/graphql-crystal

a graphql implementation for crystal
Crystal
215
star
5
Papierkorb/qt5.cr

Papierkorb/qt5.cr

Qt5 bindings for Crystal, based on Bindgen
Crystal
210
star
6
lucaong/immutable

lucaong/immutable

Thread-safe, persistent, immutable collections for the Crystal language
Crystal
201
star
7
waterlink/active_record.cr

waterlink/active_record.cr

Active Record pattern implementation for Crystal.
Crystal
191
star
8
Papierkorb/bindgen

Papierkorb/bindgen

Binding and wrapper generator for C/C++ libraries
Crystal
175
star
9
jhass/crystal-gobject

jhass/crystal-gobject

gobject-introspection for Crystal
Crystal
126
star
10
dhruvrajvanshi/Moonshine

dhruvrajvanshi/Moonshine

Web framework for Crystal language [DEPRECATED in favour of kemal]
Crystal
122
star
11
straight-shoota/crinja

straight-shoota/crinja

Implementation of Jinja2 template language in Crystal
Crystal
119
star
12
porras/crul

porras/crul

Command line HTTP client written in Crystal
Crystal
112
star
13
waterlink/spec2.cr

waterlink/spec2.cr

Enhanced `spec` testing library for [Crystal](http://crystal-lang.org/).
Crystal
103
star
14
dhruvrajvanshi/crz

dhruvrajvanshi/crz

Functional programming library for https://github.com/crystal-lang/crystal
Crystal
90
star
15
Papierkorb/fancyline

Papierkorb/fancyline

Readline-esque library with fancy features
Crystal
75
star
16
ziprandom/cltk

ziprandom/cltk

A crystal port of the Ruby Language Toolkit
Crystal
72
star
17
denisdefreyne/glove

denisdefreyne/glove

Crystal framework for making games
Crystal
69
star
18
jhass/carc.in

jhass/carc.in

Compile & run code in
Crystal
68
star
19
hanneskaeufler/crytic

hanneskaeufler/crytic

Mutation testing for crystal.
Crystal
65
star
20
oprypin/crystal-imgui

oprypin/crystal-imgui

Crystal bindings to Dear ImGui
Crystal
64
star
21
Papierkorb/cannon

Papierkorb/cannon

Lightning fast data serialization and RPC for Crystal
Crystal
58
star
22
dhruvrajvanshi/crystal-futures

dhruvrajvanshi/crystal-futures

Future type implementation for Crystal language
Crystal
57
star
23
repomaa/crouter

repomaa/crouter

a standalone router for crystal
Crystal
55
star
24
oprypin/crsfml-examples

oprypin/crsfml-examples

Simple games made with CrSFML
Crystal
54
star
25
splattael/hashids.cr

splattael/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.
Crystal
52
star
26
waterlink/mocks.cr

waterlink/mocks.cr

General purpose mocking library for Crystal.
Crystal
51
star
27
l3kn/raytracer

l3kn/raytracer

CPU Raytracer written in the crystal language
Crystal
45
star
28
oprypin/crystal-chipmunk

oprypin/crystal-chipmunk

Crystal bindings to Chipmunk, a fast and lightweight 2D game physics library
Crystal
42
star
29
spinscale/crystal-aws-lambda

spinscale/crystal-aws-lambda

Create and deploy AWS lambdas written in Crystal
Crystal
42
star
30
Papierkorb/torrent

Papierkorb/torrent

A BitTorrent library in pure Crystal
Crystal
39
star
31
dhruvrajvanshi/crystal-parsec

dhruvrajvanshi/crystal-parsec

Parsing DSL for Crystal language inspired by Haskell library Parsec
Crystal
37
star
32
denisdefreyne/rcpu

denisdefreyne/rcpu

VM emulator and assembler written in Crystal
Crystal
37
star
33
Papierkorb/cute

Papierkorb/cute

An event-centric publisher/subscribe model for objects inspired by the Qt framework
Crystal
36
star
34
miry/medup

miry/medup

Download all content from Medium and Dev.to to local folder
Crystal
36
star
35
straight-shoota/sass.cr

straight-shoota/sass.cr

Compile Sass/SCSS to CSS in Crystal (libsass binding)
Crystal
35
star
36
jhass/DeBot

jhass/DeBot

My IRC Bot
Crystal
35
star
37
comandeo/crystal-memcached

comandeo/crystal-memcached

Memcached client for Crystal language
Crystal
34
star
38
waterlink/crystal-mysql

waterlink/crystal-mysql

Basic mysql bindings for crystal.
Crystal
32
star
39
Ragmaanir/microtest

Ragmaanir/microtest

Small test framework, because it has power asserts as the only assertion.
Crystal
30
star
40
TPei/circuit_breaker

TPei/circuit_breaker

Implementation of the circuit breaker pattern in crystal
Crystal
27
star
41
CodeSteak/Nuummite

CodeSteak/Nuummite

Nuummite is a tiny persistent embedded key-value store for Crystal!
Crystal
26
star
42
splattael/libnotify.cr

splattael/libnotify.cr

Libnotify for Crystal
Crystal
26
star
43
jrester/EBNF.cr

jrester/EBNF.cr

Work with (E)BNF and bison/YACC Grammar: Parsing, FIRST/FOLLOW set, CNF, Conversions, LR and LL parsing tables
Crystal
24
star
44
repomaa/ncurses-crystal

repomaa/ncurses-crystal

ncurses bindings for crystal
Crystal
24
star
45
nilsmartel/Glass

nilsmartel/Glass

Gui Library written in Crystal
Crystal
24
star
46
porras/session

porras/session

Cookie based sessions in Crystal HTTP applications
Crystal
23
star
47
vypxl/scar

vypxl/scar

A game engine written in Crystal using crsfml
Crystal
23
star
48
porras/tlcr

porras/tlcr

Simple terminal-based client for TLDR pages, written in Crystal. TLDR pages is a collection of simplified and community-driven man pages.
Crystal
23
star
49
simplylu/WeaponizeCrystal

simplylu/WeaponizeCrystal

Experiments in weaponizing Crystal for offensive operations.
Crystal
23
star
50
greenbigfrog/discordtipbot

greenbigfrog/discordtipbot

A tip bot for use on discordapp.com
Crystal
22
star
51
straight-shoota/md2pdf

straight-shoota/md2pdf

Convert markdown files to pdf with flexible template and stylesheet
Crystal
22
star
52
straight-shoota/sanitize

straight-shoota/sanitize

Crystal library for transforming HTML/XML trees to sanitize HTML from untrusted sources
Crystal
21
star
53
Ragmaanir/soegen

Ragmaanir/soegen

Elasticsearch client library for crystal, similar to rubys stretcher gem
Crystal
20
star
54
straight-shoota/criss

straight-shoota/criss

Instantaneous static site site generator and server in Crystal
Crystal
19
star
55
cocol-project/cocol

cocol-project/cocol

Rapid blockchain prototyping
Crystal
19
star
56
waterlink/timecop.cr

waterlink/timecop.cr

Mock with `Time.now` with the power of time travel, time freeze and time scale.
Crystal
19
star
57
ziprandom/crystal-dfa

ziprandom/crystal-dfa

A Crystal Implementation of a Thompson NFA/DFA Regex Matcher
Crystal
18
star
58
jhass/github_desktop_notifications

jhass/github_desktop_notifications

Display your Github notifications via libnotify
Crystal
16
star
59
Angarsk8/chat-app-demo

Angarsk8/chat-app-demo

Chat application developed with Kemal, React, ES2015 and PostgreSQL
Crystal
16
star
60
oprypin/crystal-imgui-sfml

oprypin/crystal-imgui-sfml

Crystal bindings to ImGui-SFML
Crystal
16
star
61
oprypin/critter

oprypin/critter

Chat bot relaying messages between IRC and Gitter
Crystal
16
star
62
TPei/progress_bar.cr

TPei/progress_bar.cr

A ProgressBar implementation for the Crystal programming language
Crystal
15
star
63
denisdefreyne/inari

denisdefreyne/inari

A collection of games written in Crystal
Crystal
14
star
64
repomaa/open_api.cr

repomaa/open_api.cr

Type safe OpenAPI spec library
Crystal
14
star
65
comandeo/syslog.cr

comandeo/syslog.cr

Syslog client implementation for Crystal
Crystal
14
star
66
greyblake/crystal-google_translate

greyblake/crystal-google_translate

Google Translate client for Crystal
Crystal
14
star
67
waterlink/query.cr

waterlink/query.cr

Query abstraction for Crystal Language. Used by active_record.cr library.
Crystal
13
star
68
greyblake/crystal-magma

greyblake/crystal-magma

Crystal interpreter
Crystal
13
star
69
miry/samples

miry/samples

Practice algorithms and data structure on different languages
Crystal
13
star
70
porras/mock

porras/mock

Doubles (stubs and mocks) library for Crystal, inspired by the API of rspec-mocks
Crystal
13
star
71
mishushakov/syntaxer

mishushakov/syntaxer

Multi-backend syntax highlighter for Crystal
Crystal
13
star
72
Papierkorb/json_rpc

Papierkorb/json_rpc

JSON-RPC client and server library
Crystal
12
star
73
oprypin/crystal-dbus

oprypin/crystal-dbus

Crystal bindings to D-Bus
Crystal
12
star
74
lipanski/keepass

lipanski/keepass

Keepass KDBX v2/v3 parser for Crystal
Crystal
12
star
75
repomaa/crystal-jsonapi

repomaa/crystal-jsonapi

JSON API serializing for crystal
Crystal
12
star
76
beanieboi/aws-signer.cr

beanieboi/aws-signer.cr

This library signs your HTTP requests using AWS v4
Crystal
12
star
77
threez/hpdf.cr

threez/hpdf.cr

Create PDF documents in crystal using libhpdf / libharu
Crystal
11
star
78
waterlink/quick.cr

waterlink/quick.cr

QuickCheck implementation for Crystal Language
Crystal
11
star
79
mntns/sodium

mntns/sodium

A fast library for graph/network manipulation
Crystal
11
star
80
wonderix/crystal-tds

wonderix/crystal-tds

Crystal
11
star
81
Papierkorb/fuse

Papierkorb/fuse

libFUSE bindings for Crystal
Crystal
10
star
82
markauskas/http2

markauskas/http2

HTTP/2 implementation in Crystal
Crystal
10
star
83
stefanwille/crystal-redis-examples

stefanwille/crystal-redis-examples

Examples for crystal-redis
Crystal
10
star
84
Hadeweka/Crystal2Day

Hadeweka/Crystal2Day

Simple 2D game framework in Crystal
Crystal
9
star
85
oprypin/crystal-raw-gl

oprypin/crystal-raw-gl

Crystal bindings to OpenGL and GLU
Crystal
9
star
86
waterlink/postgres_adapter.cr

waterlink/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.
Crystal
9
star
87
TPei/observable

TPei/observable

Implementation of the Observer pattern in crystal
Crystal
9
star
88
greyblake/crystal-aitk

greyblake/crystal-aitk

Artificial Intelligence Tool Kit for Crystal lang
Crystal
8
star
89
Papierkorb/toka

Papierkorb/toka

A type-safe, object-oriented option parser
Crystal
8
star
90
badBlackShark/shrkbot

badBlackShark/shrkbot

My general purpose Discord bot, that allows you to turn features on or off.
Crystal
8
star
91
rodrigopinto/can_use

rodrigopinto/can_use

๐Ÿค” Can I use? CanUse is a minimalist feature toggle/flag for crystal, based on yaml file.
Crystal
8
star
92
waterlink/spec2-mocks.cr

waterlink/spec2-mocks.cr

This library connects spec2.cr and mocks.cr, effectively enabling 'have_received' expectation for spec2.
Crystal
8
star
93
Papierkorb/tuntap

Papierkorb/tuntap

TUN/TAP driver for Crystal
Crystal
7
star
94
fabianloewe/crystal-shared-lib

fabianloewe/crystal-shared-lib

A very simple compilable Crystal library to test https://github.com/hyronx/crystal/tree/feature/shared_library
Crystal
7
star
95
oprypin/crystal-fuzzing

oprypin/crystal-fuzzing

Fuzzing for Crystal programming language
Crystal
7
star
96
denisdefreyne/rcpu-lang

denisdefreyne/rcpu-lang

Language that compiles to RCPU assembly
Crystal
6
star
97
fabianloewe/plugal

fabianloewe/plugal

A plugin system relying on Redis written in Crystal
Crystal
6
star
98
porras/store

porras/store

File based storage library for Crystal (inspired by Ruby's PStore)
Crystal
6
star
99
waterlink/mysql_adapter.cr

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)
Crystal
6
star
100
repomaa/gpg.cr

repomaa/gpg.cr

GnuPG bindings for crystal
Crystal
6
star