🇨🇿 Czechia Open Source Contributors

Discover the top open source developers from the Czechia who are revolutionizing the IT world with their exceptional talent and ground-breaking projects.

Developers

6,290

Organizations

839

Repositories

41,533

Top Rank

Shell, C, Lua

🇨🇿 Made in Czechia Compare with other countries 🌐 All countries

Top Contributors

201
Martin Pecka (@peci1)

peci1

Java, JavaScript, C++
741
star
202
Vaclav (@bruxy70)

bruxy70

Python, C++, Jupyter Notebook
737
star
203
ashlen (@thesadru)

thesadru

Python, HTML, C#
733
star
204
Adaptech s.r.o. (@adaptech-cz)

adaptech-cz

C
725
star
205
Bohemia Interactive (@BohemiaInteractive)

BohemiaInteractive

JavaScript, C, C++
711
star
206
@Crauzer

Crauzer

C#, TypeScript, Rust
698
star
207
Sergei ZH (@quentincaffeino)

quentincaffeino

GDScript, JavaScript, Makefile
696
star
208
Webscope.io (@webscopeio)

webscopeio

TypeScript, JavaScript, Python
696
star
209
Tomas Barton (@deric)

deric

Ruby, Java, Shell
695
star
210
Pavel Dedik (@paveldedik)

paveldedik

Python, CSS, Jupyter Notebook
688
star
211
Charlesmudy (@charlesmudy)

charlesmudy

HTML
688
star
212
Tomas Sedovic (@tomassedovic)

tomassedovic

Python, Rust, CoffeeScript
683
star
213
Anton Skorochod (@kanocz)

kanocz

Go, C++, C
679
star
214
David Frnoch (@dfrnoch)

dfrnoch

TypeScript, Python, JavaScript
669
star
215
Pavel H (@slowscript)

slowscript

Java, HTML, C#
668
star
216
Josef Gajdusek (@atx)

atx

Python, C, C++
664
star
217
@Kentico

Kentico

C#, JavaScript, TypeScript
663
star
218
Institute of Formal and Applied Linguistics – Dialogue Systems Group (@UFAL-DSG)

UFAL-DSG

Python, C, Roff
661
star
219
Tomas Vojir (@vojirt)

vojirt

C++, Python, MATLAB
659
star
220
Tomáš Znamenáček (@zoul)

zoul

Objective-C, Swift, Ruby
657
star
221
Fragaria, s.r.o. (@fragaria)

fragaria

JavaScript, Python, TypeScript
655
star
222
Tomáš Hübelbauer (@TomasHubelbauer)

TomasHubelbauer

JavaScript, Markdown, TypeScript
652
star
223
Yevhen Kuzmovych (@kuzmoyev)

kuzmoyev

Jupyter Notebook, Python, TeX
652
star
224
Jan Forst (@darosh)

darosh

JavaScript, HTML, Vue
652
star
225
Ondrej Texler (@OndrejTexler)

OndrejTexler

C++
650
star
226
Pyvec, z.s. (@pyvec)

pyvec

Python, HTML, CSS
649
star
227
Jakub Hlusička (@Limeth)

Limeth

Rust, Java, GLSL
648
star
228
Midori Kocak (@midorikocak)

midorikocak

PHP, HTML, JavaScript
638
star
229
@Cvolton

Cvolton

C++, Java, Python
635
star
230
Josef Pihrt (@josefpihrt)

josefpihrt

C#, JavaScript, Vim Snippet
628
star
231
Otto DIY (@OttoDIY)

OttoDIY

C++, C, JavaScript
626
star
232
Tomas (@viktomas)

viktomas

Go, JavaScript, Ruby
619
star
233
Lukáš Petr (@LukasCZ)

LukasCZ

Objective-C, Swift
617
star
234
Martin Endler (@pokusew)

pokusew

JavaScript, Shell, TeX
613
star
235
Melown Technologies, SE (@melowntech)

melowntech

C++, C#, CMake
610
star
236
Martin Majlis (@martin-majlis)

martin-majlis

Python, PHP, C++
609
star
237
Petr Zemek (@s3rvac)

s3rvac

Python, Vim Script, Rust
606
star
238
@Showmax

Showmax

Python, Swift, Go
606
star
239
Roman Parak (@rparak)

rparak

Python, C#, C
602
star
240
Tom Pažourek (@tompazourek)

tompazourek

C#
600
star
241
Ondřej Hruška (@MightyPork)

MightyPork

C, JavaScript, Python
599
star
242
HAVIT (@havit)

havit

C#
595
star
243
Jan Muller (@biokys)

biokys

Java, JavaScript
585
star
244
Jan Kuča (@jankuca)

jankuca

JavaScript, CoffeeScript, PHP
584
star
245
edgedesign/phpqa (@EdgedesignCZ)

EdgedesignCZ

PHP, XSLT
577
star
246
Tee (@teeteeteeteetee)

teeteeteeteetee

C#, JavaScript, C++
565
star
247
@djdagovs

djdagovs

Shell, PHP, HTML
565
star
248
Martin Kluska (@pionl)

pionl

PHP, JavaScript, Dockerfile
563
star
249
Tomas Korcak (@korczis)

korczis

Ruby, Shell, JavaScript
561
star
250
Alexey Ardov (@ardov)

ardov

TypeScript, CSS
558
star
251
Daniel Fiser (@danfis)

danfis

C, C++, Python
558
star
252
@GoodAI

GoodAI

Python, C#, Jupyter Notebook
557
star
253
Martin Cohen (@martincohen)

martincohen

C
553
star
254
Jan Breuer (@j123b567)

j123b567

C, C#, Java
550
star
255
Martin Šťovíček (@stovmascript)

stovmascript

JavaScript
542
star
256
@ngParty

ngParty

TypeScript, JavaScript, HTML
540
star
257
Denis Zykov (@deniszykov)

deniszykov

C#
537
star
258
Tomáš Báča (@klaxalk)

klaxalk

C, Shell, C++
535
star
259
@FlowCrypt

FlowCrypt

TypeScript, Python, Shell
533
star
260
Jølly Good (@good-lly)

good-lly

TypeScript, HTML, Python
528
star
261
Jakub Čábera (@Ash258)

Ash258

PowerShell, Java, C
528
star
262
Petr Broz (@petrbroz)

petrbroz

JavaScript, TypeScript, C#
527
star
263
Tonda Fischer (@raven2cz)

raven2cz

Lua, CSS, Emacs Lisp
527
star
264
Ondrej Kokes (@kokes)

kokes

Python, Jupyter Notebook, JavaScript
526
star
265
Mustafa Ozhan (@mustafaozhan)

mustafaozhan

Kotlin, Swift, Shell
525
star
266
Martin Janiczek (@Janiczek)

Janiczek

Elm, HTML, Clojure
521
star
267
Jan Ivanecky (@janivanecky)

janivanecky

Python, C, C++
520
star
268
@MartinD-CZ

MartinD-CZ

Makefile, C++, HTML
519
star
269
BART! (@bartholomej)

bartholomej

TypeScript, JavaScript, HTML
512
star
270
@Martyx00

Martyx00

Python, C++
512
star
271
Artem Manchenkov (@manchenkoff)

manchenkoff

Python, PHP, TypeScript
506
star
272
@DEVSENSE

DEVSENSE

C#, PHP, Dockerfile
505
star
273
Yauhen Babakhin (@ybabakhin)

ybabakhin

Python, Jupyter Notebook
504
star
274
Vojta Stavik (@VojtaStavik)

VojtaStavik

Swift, Shell, JavaScript
502
star
275
Milos Kozak (@MilosKozak)

MilosKozak

Java
501
star
276
@CSIRT-MU

CSIRT-MU

Python, Jupyter Notebook, Java
500
star
277
Martin Dráb (@MartinDrab)

MartinDrab

C, Pascal
499
star
278
LMC s.r.o. (@lmc-eu)

lmc-eu

PHP, JavaScript, TypeScript
499
star
279
Keboola (@keboola)

keboola

PHP, Python, JavaScript
497
star
280
Jakub Martyčák (@rusel1989)

rusel1989

Objective-C
496
star
281
Joan Bono (@joanbono)

joanbono

Go, Python, Shell
491
star
282
Jaromír (@jaromiru)

jaromiru

Python, MATLAB
491
star
283
Ondřej Švanda (@Papooch)

Papooch

TypeScript, OpenSCAD, Python
489
star
284
Adam Uhlíř (@AuHau)

AuHau

Python, JavaScript, TeX
487
star
285
Vít Starý Novotný (@Witiko)

Witiko

TeX, Python, Shell
484
star
286
Milan Pavlik (@easyCZ)

easyCZ

Go, JavaScript, TypeScript
480
star
287
Jakub Kinst (@jakubkinst)

jakubkinst

Java, PHP, JavaScript
480
star
288
Petr Viktorin (@encukou)

encukou

Python, C, OpenSCAD
475
star
289
Al (@aorumbayev)

aorumbayev

Python, JavaScript, C++
473
star
290
Mews (@MewsSystems)

MewsSystems

C#, Kotlin, Dart
473
star
291
Dan Homola (@no23reason)

no23reason

TypeScript, JavaScript
469
star
292
PostSharp Technologies (@postsharp)

postsharp

C#, PowerShell
468
star
293
@Kibo

Kibo

JavaScript, Java, Shell
467
star
294
Roman Samec (@rsamec)

rsamec

JavaScript, TypeScript, CSS
465
star
295
Vojtěch Jungmann (@EETagent)

EETagent

C, Rust, HTML
461
star
296
API Hogs (@api-hogs)

api-hogs

JavaScript, Elixir
460
star
297
Dalibor Kundrat (@damikun)

damikun

TypeScript, C#
457
star
298
@TeskaLabs

TeskaLabs

Python, JavaScript, C
451
star
299
Zdenek Svoboda (@zsvoboda)

zsvoboda

Python, JavaScript, Jupyter Notebook
443
star
300
@kracejic

kracejic

CMake, CSS, Python
442
star

Statistics

By location

Prague 64.4%
Brno 21.0%
Ostrava 2.2%
Pilsen 1.5%
Liberec 1.0%
Other 10.0%

By programing language

JavaScript
15.8%
Python
14.9%
C++
8.3%
Java
8.1%
PHP
8.0%
Other
44.8%

World rating by programing language (country/rank)

Shell
21
C
24
Lua
25
C++
26
Rust
26

* More analytics for signed in users.