🇨🇿 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

101
Maciej Treder (@maciejtreder)

maciejtreder

TypeScript, JavaScript, Java
1,405
star
102
Petr Gotthard (@gotthardp)

gotthardp

Erlang, Makefile, BitBake
1,403
star
103
Marek Veselý (@notmarek)

notmarek

Rust, JavaScript, Python
1,378
star
104
David Duong (@dqbd)

dqbd

JavaScript, TypeScript, Java
1,373
star
105
@symplify

symplify

PHP
1,371
star
106
Hynek Petrak (@HynekPetrak)

HynekPetrak

Python, JavaScript, C#
1,361
star
107
Jakub Kulhan (@jakubkulhan)

jakubkulhan

PHP, Go, Java
1,356
star
108
Michael Musil (@infi-pc)

infi-pc

TypeScript, JavaScript
1,347
star
109
Jan Bláha (@swift502)

swift502

C#, Python, TypeScript
1,328
star
110
David Durman (@DavidDurman)

DavidDurman

JavaScript, C, Shell
1,311
star
111
FEO (@feo-cz)

feo-cz

C#, PHP, CSS
1,286
star
112
Jiri Trecak (@JiriTrecak)

JiriTrecak

Swift
1,282
star
113
Oleksandr Balan (@oleksandrbalan)

oleksandrbalan

Kotlin
1,272
star
114
Jan Žák (@zakjan)

zakjan

JavaScript, TypeScript, Shell
1,249
star
115
Elastic Sea (@ElasticSea)

ElasticSea

C#, Java, PowerShell
1,245
star
116
Ladislav Zezula (@ladislav-zezula)

ladislav-zezula

C++, C
1,238
star
117
Seznam.cz a.s. (@seznam)

seznam

JavaScript, Python, C++
1,230
star
118
Easy Coding Standard (@easy-coding-standard)

easy-coding-standard

PHP
1,226
star
119
Torsten Sattler (@tsattler)

tsattler

C++, Python
1,203
star
120
QupZilla Browser (@QupZilla)

QupZilla

C++, PHP, JavaScript
1,192
star
121
Step Up Labs (@step-up-labs)

step-up-labs

C#
1,184
star
122
Georgy Marchuk (@gmrchk)

gmrchk

JavaScript, TypeScript
1,179
star
123
Jakub Truhlář (@kubatruhlar)

kubatruhlar

Objective-C, Shell, Swift
1,176
star
124
Tomas Tomecek (@TomasTomecek)

TomasTomecek

Python, JavaScript, Go
1,171
star
125
Windy (@windycom)

windycom

JavaScript, Swift
1,164
star
126
Kamil Tomšík (@cztomsik)

cztomsik

Zig, Rust, JavaScript
1,156
star
127
Roman B. (@romanbican)

romanbican

PHP
1,155
star
128
Vojtěch Habarta (@vojtechhabarta)

vojtechhabarta

Java, JavaScript
1,149
star
129
Roman Provazník (@Dzoukr)

Dzoukr

F#, Dockerfile
1,131
star
130
Roman (@march08)

march08

JavaScript, TypeScript
1,119
star
131
Jan Odvarko (@janodvarko)

janodvarko

JavaScript
1,117
star
132
Alexandre Vicenzi (@alexandrevicenzi)

alexandrevicenzi

Python, Go, JavaScript
1,109
star
133
Peter Lemenkov (@lemenkov)

lemenkov

C, Erlang, Shell
1,108
star
134
Šimon Let (@curusarn)

curusarn

Go, Makefile, HTML
1,084
star
135
Akhmed Ibragimov (@Darginec05)

Darginec05

TypeScript
1,077
star
136
Boris Letocha (@Bobris)

Bobris

C#, TypeScript, JavaScript
1,063
star
137
Superdesk (@superdesk)

superdesk

Python, JavaScript, PHP
1,059
star
138
Filip Halaxa (@halaxa)

halaxa

PHP
1,055
star
139
David Rosca (@nowrep)

nowrep

C++, C, Lua
1,052
star
140
Mike (@MikeKovarik)

MikeKovarik

JavaScript, HTML
1,052
star
141
Petr Šťastný (@SoptikHa2)

SoptikHa2

Rust, C#, Python
1,048
star
142
Dmitry Dygalo (@Stranger6667)

Stranger6667

Python, Rust
1,042
star
143
Tomas Krejci (@tomas789)

tomas789

C++, Python, HTML
1,038
star
144
@Kdyby

Kdyby

PHP
1,023
star
145
Tomáš Nekvinda (@Tomiinek)

Tomiinek

Python, C++, Pascal
1,009
star
146
Tomáš Iser (@tomasiser)

tomasiser

C++, Java, Vim Script
1,007
star
147
Riki Fridrich (@fczbkk)

fczbkk

JavaScript, CoffeeScript, Vue
1,004
star
148
Multi-robot Systems (MRS) group at Czech Technical University in Prague (@ctu-mrs)

ctu-mrs

C++, Shell, Python
1,000
star
149
Jakub Arnold (@darthdeus)

darthdeus

Ruby, Haskell, Rust
988
star
150
Petr Havlena (@havlenapetr)

havlenapetr

C, Java, C++
981
star
151
Vojtěch Boček (@Tasssadar)

Tasssadar

C++, C, Java
974
star
152
Jakub Scholz (@scholzj)

scholzj

Java, Shell, HCL
966
star
153
Tomáš Martykán (@martykan)

martykan

Java, JavaScript, Swift
952
star
154
BUT Speech@FIT (@BUTSpeechFIT)

BUTSpeechFIT

Python, Jupyter Notebook, Shell
950
star
155
Mariusz Kotas (@Marfusios)

Marfusios

C#, TypeScript, HTML
949
star
156
@chylex

chylex

Java, Kotlin, C#
947
star
157
Tomas Petricek (@tpetricek)

tpetricek

F#, HTML, TeX
946
star
158
Jiří Šebek (@jirsbek)

jirsbek

CSS, PHP
939
star
159
Zonky (@zonkyio)

zonkyio

Java, Shell, JavaScript
939
star
160
Martin Franc (@francma)

francma

CSS, C, Meson
928
star
161
Bastl Instruments (@bastl-instruments)

bastl-instruments

C++, Arduino, C
928
star
162
Martin Tůma (@tumic0)

tumic0

C++, C, Smarty
925
star
163
RIGANTI s.r.o. (@riganti)

riganti

C#, JavaScript, TypeScript
923
star
164
Adam Horacek (@adamhoracek)

adamhoracek

Objective-C
910
star
165
Ondřej Nepožitek (@OndrejNepozitek)

OndrejNepozitek

C#, JavaScript
901
star
166
Ackee (@AckeeCZ)

AckeeCZ

TypeScript, Kotlin, Swift
900
star
167
Erdin Kacan (@Ludomancer)

Ludomancer

C#, CSS, HTML
897
star
168
Petr Ruzicka (@ruzickap)

ruzickap

Shell, Dockerfile, Jinja
897
star
169
Ondřej Surý (@oerdnj)

oerdnj

C, Shell, C++
896
star
170
Jirka Borovec (@Borda)

Borda

Python, Jupyter Notebook, Dockerfile
890
star
171
Fork.dev (@fork-dev)

fork-dev

885
star
172
Martin Hochel (@Hotell)

Hotell

TypeScript, JavaScript
884
star
173
Adam Schubert (@Salamek)

Salamek

Python, PHP, Go
881
star
174
Nextras (@nextras)

nextras

PHP, JavaScript, Kotlin
874
star
175
Sourcefabric (@sourcefabric)

sourcefabric

PHP
872
star
176
Tomas Vondra (@tvondra)

tvondra

C, PLpgSQL, Shell
868
star
177
Alex Devero (@alexdevero)

alexdevero

TypeScript, JavaScript, HTML
863
star
178
@Chleba

Chleba

JavaScript, Rust, Python
847
star
179
Radek Vymětalík (@RadekVyM)

RadekVyM

C#, CSS, JavaScript
846
star
180
Martin Allien (@AllienWorks)

AllienWorks

CSS, Shell
841
star
181
Marek Fořt (@fortmarek)

fortmarek

Swift, Java, JavaScript
840
star
182
Dan R. (@deathkiller)

deathkiller

C++, C#, C
838
star
183
Talsec (@talsec)

talsec

C, Kotlin
836
star
184
Charles Assunção (@assuncaocharles)

assuncaocharles

TypeScript, JavaScript, C#
833
star
185
Sasha Aliashkevich (@sasha-alias)

sasha-alias

Python, JavaScript, CSS
832
star
186
Petr Medek (@me2d13)

me2d13

Pascal, C++, Python
826
star
187
Honza Král (@honzakral)

honzakral

Python
822
star
188
Slush (@slush0)

slush0

Python, PHP, JavaScript
815
star
189
Filip Němeček (@nemecek-filip)

nemecek-filip

Swift, HTML, JavaScript
815
star
190
Matus Novak (@matusnovak)

matusnovak

C++, C, Python
811
star
191
Michal Busta (@MichalBusta)

MichalBusta

Python, C++, C
811
star
192
Czech Technical University (@cvut)

cvut

Python, Java, JavaScript
806
star
193
David Schovanec (@schovi)

schovi

JavaScript, Crystal, Ruby
792
star
194
Tomas Vymazal (@MyOwnClone)

MyOwnClone

C#, C++, C
792
star
195
Luca D'Alberti (@dalu93)

dalu93

Swift, Objective-C, JavaScript
790
star
196
Ciaran Fisher (@ciribob)

ciribob

Lua, C#, C++
784
star
197
@rkadlec

rkadlec

Jupyter Notebook, Python
766
star
198
Filip Matzner (@FloopCZ)

FloopCZ

Shell, C++
765
star
199
Petr Vostřel (@pisi)

pisi

JavaScript
754
star
200
Nemanja Mijailovic (@Metalnem)

Metalnem

C#, Go, JavaScript
753
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.