🇨🇿 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

1
Avast (@avast)

avast

C++, Java, Scala
19,786
star
2
Jakub Onderka (@JakubOnderka)

JakubOnderka

PHP, Rust, JavaScript
13,165
star
3
Giampaolo Rodola (@giampaolo)

giampaolo

Python, HTML
11,960
star
4
Prusa3D (@prusa3d)

prusa3d

HTML, C, C++
11,910
star
5
Photopea (@photopea)

photopea

JavaScript, HTML
11,157
star
6
Ondřej Žára (@ondras)

ondras

JavaScript, TypeScript, HTML
10,067
star
7
Josef Nemec (@JosefNemec)

JosefNemec

C#, HTML, PowerShell
9,400
star
8
RectorPHP (@rectorphp)

rectorphp

PHP
9,320
star
9
Jan Vlnas (@jnv)

jnv

JavaScript, Ruby, HTML
9,047
star
10
Filip Skokan (@panva)

panva

JavaScript, TypeScript
8,541
star
11
Jan Pochyla (@jpochyla)

jpochyla

Rust, JavaScript, C
7,798
star
12
Jakub Vrána (@vrana)

vrana

PHP, JavaScript
7,364
star
13
Vladimír Vondruš (@mosra)

mosra

C++, Shell, C
6,732
star
14
Farkhod Sadykov (@TheR1D)

TheR1D

Python
6,732
star
15
Catalin Miron (@catalinmiron)

catalinmiron

JavaScript, TypeScript, Objective-C
6,571
star
16
Trezor (@trezor)

trezor

Python, JavaScript, C
6,223
star
17
Martin Dvorak (@dvorka)

dvorka

Java, C++, C
5,949
star
18
Filip Krikava (@fikovnik)

fikovnik

Shell, Python, Objective-C
5,776
star
19
Kamil Vavra (@vavkamil)

vavkamil

Python, PHP, HTML
5,744
star
20
Jan Kotek (@jankotek)

jankotek

Java, Kotlin, CSS
5,458
star
21
Samuel Tulach (@SamuelTulach)

SamuelTulach

C++, C#, C
5,242
star
22
Václav Slavík (@vslavik)

vslavik

C++, Python, Makefile
5,117
star
23
Petr Beneš (@wbenny)

wbenny

C, C++, HTML
5,064
star
24
Pavan Kumar Sunkara (@pksunkara)

pksunkara

JavaScript, Rust, CoffeeScript
4,985
star
25
DbGate (@dbgate)

dbgate

JavaScript, TypeScript, TSQL
4,976
star
26
@Disassembler0

Disassembler0

Python, PHP, C#
4,957
star
27
Jakub Beránek (@Kobzol)

Kobzol

C++, Python, Rust
4,953
star
28
Marek Šottl (@sottlmarek)

sottlmarek

Python, HCL, JavaScript
4,745
star
29
Viktor Chlumský (@Chlumsky)

Chlumsky

C++, JavaScript, C
4,742
star
30
Matus Goljer (@Fuco1)

Fuco1

Emacs Lisp, Haskell, Shell
4,258
star
31
Jan Škoruba (@skoruba)

skoruba

C#, TypeScript
4,252
star
32
Jakub Jirutka (@jirutka)

jirutka

Shell, Java, Ruby
4,230
star
33
client IO (@clientIO)

clientIO

JavaScript, TypeScript, Svelte
4,223
star
34
Daniel Milde (@dundee)

dundee

Python, Go, PHP
4,067
star
35
Lingui (@lingui)

lingui

TypeScript, JavaScript, Rust
4,013
star
36
Weblate (@WeblateOrg)

WeblateOrg

Python, Shell, Makefile
4,007
star
37
Karel Minarik (@karmi)

karmi

Ruby, JavaScript, Go
3,975
star
38
Patrik Simek (@patriksimek)

patriksimek

CoffeeScript, JavaScript, PLpgSQL
3,864
star
39
Filip Hracek (@filiph)

filiph

Dart, JavaScript, HTML
3,843
star
40
David Grudl (@dg)

dg

PHP, HTML
3,656
star
41
Jindra Petřík (@jindrapetrik)

jindrapetrik

Java, C++, ActionScript
3,630
star
42
Hana Dusíková (@hanickadot)

hanickadot

C++
3,626
star
43
Matheus Fernandes (@matheuss)

matheuss

JavaScript, TypeScript, Shell
3,626
star
44
Source (@madebysource)

madebysource

JavaScript, Objective-C, CSS
3,592
star
45
Kiwi.com (@kiwicom)

kiwicom

JavaScript, Python, HCL
3,521
star
46
Igor Kulman (@igorkulman)

igorkulman

C#, Swift, JavaScript
3,484
star
47
Keen Software House (@KeenSoftwareHouse)

KeenSoftwareHouse

C#, C++, HTML
3,185
star
48
Salsita Software (@salsita)

salsita

JavaScript, Python, TypeScript
3,127
star
49
@swarmpit

swarmpit

Shell, Less, Go
3,111
star
50
Janko Marohnić (@janko)

janko

Ruby, JavaScript, HTML
3,048
star
51
Jan Mrázek (@yaqwsx)

yaqwsx

Python, C++, JavaScript
3,029
star
52
@CESNET

CESNET

C, Python, C++
2,891
star
53
CZ.NIC (@CZ-NIC)

CZ-NIC

Python, C, JavaScript
2,874
star
54
Pavel Stehule (@okbob)

okbob

C
2,873
star
55
Dmytro Mishkin (@ducha-aiki)

ducha-aiki

Jupyter Notebook, Python, C++
2,655
star
56
Contributte (@contributte)

contributte

PHP, CSS, Latte
2,588
star
57
Inmite s.r.o. (@inmite)

inmite

Java, Objective-C++, CSS
2,556
star
58
Michal Spicka (@elendirx)

elendirx

HTML
2,255
star
59
Martin Lapiš (@lapism)

lapism

Kotlin
2,232
star
60
Schemathesis.io (@schemathesis)

schemathesis

Python
2,227
star
61
@martinrotter

martinrotter

C++, TeX, C#
2,199
star
62
@ApiGen

ApiGen

PHP, HTML
2,165
star
63
Zdenek Kalal (@zk00006)

zk00006

MATLAB
2,090
star
64
Vojtěch Krása (@krasa)

krasa

Java, Kotlin, C++
2,062
star
65
@Brightify

Brightify

Swift, Kotlin, Java
2,042
star
66
Petr Baudis (@pasky)

pasky

Python, Perl, TeX
2,026
star
67
Andrei Kvapil (@kvaps)

kvaps

Shell, HTML, Go
2,026
star
68
Futured (@futuredapp)

futuredapp

Swift, Kotlin, Ruby
1,986
star
69
Michal Krenek (Mikos) (@xmikos)

xmikos

Python, Vim Script, Shell
1,967
star
70
David Samuel (@davda54)

davda54

Python, C#, Pascal
1,894
star
71
Patrik Holop (@PatrikH0lop)

PatrikH0lop

C, Python
1,858
star
72
Michal 'vorner' Vaner (@vorner)

vorner

Rust, SCSS
1,856
star
73
Urbandroid Team (@urbandroid-team)

urbandroid-team

Java, Kotlin, SCSS
1,737
star
74
Tolgee (@tolgee)

tolgee

TypeScript, Vue, MDX
1,732
star
75
Michal Danilák (@Mimino666)

Mimino666

Python, C++
1,725
star
76
Davide Pollicino (@omonimus1)

omonimus1

Python, C++, JavaScript
1,712
star
77
Marcel Dopita (@moneytoo)

moneytoo

Java, JavaScript, HTML
1,701
star
78
Avocode (@avocode)

avocode

CoffeeScript, JavaScript, HTML
1,695
star
79
Jiri Spac (@capaj)

capaj

JavaScript, TypeScript, CSS
1,692
star
80
Martin Kníže (@Martz90)

Martz90

CSS
1,691
star
81
Josef Prusa (@josefprusa)

josefprusa

JavaScript, Python, OpenSCAD
1,689
star
82
Petr Nohejl (@petrnohejl)

petrnohejl

Python, Java, C++
1,687
star
83
ÚFAL (@ufal)

ufal

Python, Perl, C++
1,677
star
84
Matěj Týč (@matejak)

matejak

Python, Shell, C
1,676
star
85
Jiří Stránský (@jistr)

jistr

Shell, Ruby, Python
1,634
star
86
Michael Grafnetter (@MichaelGrafnetter)

MichaelGrafnetter

C#, HTML
1,613
star
87
Dávid Ocetník (@ocetnik)

ocetnik

Java
1,601
star
88
Lukáš Vlček (@lukas-vlcek)

lukas-vlcek

Java, JavaScript, Shell
1,543
star
89
dcbuilder.eth (@dcbuild3r)

dcbuild3r

Rust, JavaScript, Solidity
1,539
star
90
SatoshiLabs (@satoshilabs)

satoshilabs

Markdown
1,528
star
91
BOOT!Q Creative (@blueberryapps)

blueberryapps

JavaScript, Ruby, TypeScript
1,502
star
92
Martin Mitáš (@mity)

mity

C, C++, PHP
1,498
star
93
Minexew (@minexew)

minexew

Python, HolyC, C++
1,494
star
94
Josef Šimánek (@simi)

simi

Ruby, C, CSS
1,467
star
95
Michal Doubek (@coofcookie)

coofcookie

C#
1,465
star
96
Slevomat (@slevomat)

slevomat

PHP
1,424
star
97
Evgeny (@Evalle)

Evalle

Python, Shell
1,423
star
98
CRoCS (@crocs-muni)

crocs-muni

Python, Java, C++
1,415
star
99
Vladimír Gorej (@char0n)

char0n

JavaScript, Python, Java
1,412
star
100
Stratosphere IPS (@stratosphereips)

stratosphereips

Python, Jupyter Notebook, Zeek
1,411
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.