🇨🇿 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

6,223

Organizations

833

Repositories

40,961

Top Rank

Shell, TeX, C

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

Top Contributors

1
Avast (@avast)

avast

C++, Java, Scala
19,480
star
2
Jakub Onderka (@JakubOnderka)

JakubOnderka

PHP, Rust, JavaScript
13,181
star
3
Prusa3D (@prusa3d)

prusa3d

HTML, C, C++
11,910
star
4
Giampaolo Rodola (@giampaolo)

giampaolo

Python, HTML
11,775
star
5
Photopea (@photopea)

photopea

JavaScript, HTML
10,832
star
6
Ondřej Žára (@ondras)

ondras

JavaScript, TypeScript, HTML
10,067
star
7
Jan Vlnas (@jnv)

jnv

JavaScript, Ruby, Python
9,047
star
8
RectorPHP (@rectorphp)

rectorphp

PHP
8,986
star
9
Josef Nemec (@JosefNemec)

JosefNemec

C#, HTML, PowerShell
8,971
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
7,249
star
13
Farkhod Sadykov (@TheR1D)

TheR1D

Python
6,732
star
14
Catalin Miron (@catalinmiron)

catalinmiron

JavaScript, TypeScript, Objective-C
6,571
star
15
Vladimír Vondruš (@mosra)

mosra

C++, Shell, C
6,563
star
16
Trezor (@trezor)

trezor

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

dvorka

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

fikovnik

Shell, Objective-C, Python
5,776
star
19
Jan Kotek (@jankotek)

jankotek

Java, Kotlin, CSS
5,423
star
20
Kamil Vavra (@vavkamil)

vavkamil

Python, PHP, HTML
5,362
star
21
Václav Slavík (@vslavik)

vslavik

C++, Python, Makefile
5,117
star
22
Petr Beneš (@wbenny)

wbenny

C, C++, Python
4,961
star
23
Pavan Kumar Sunkara (@pksunkara)

pksunkara

JavaScript, Rust, CoffeeScript
4,932
star
24
@Disassembler0

Disassembler0

Python, PHP, C#
4,930
star
25
Samuel Tulach (@SamuelTulach)

SamuelTulach

C++, C#, C
4,771
star
26
Marek Šottl (@sottlmarek)

sottlmarek

Python, HCL, C
4,745
star
27
Jakub Beránek (@Kobzol)

Kobzol

C++, Rust, Python
4,724
star
28
Viktor Chlumský (@Chlumsky)

Chlumsky

C++, JavaScript, C
4,558
star
29
Jan Škoruba (@skoruba)

skoruba

TypeScript, C#
4,252
star
30
client IO (@clientIO)

clientIO

JavaScript, TypeScript, Svelte
4,223
star
31
Matus Goljer (@Fuco1)

Fuco1

Emacs Lisp, Shell, Haskell
4,222
star
32
Jakub Jirutka (@jirutka)

jirutka

Shell, Java, Ruby
4,175
star
33
Lingui (@lingui)

lingui

TypeScript, JavaScript, Rust
4,013
star
34
Weblate (@WeblateOrg)

WeblateOrg

Python, Shell, Makefile
4,007
star
35
Karel Minarik (@karmi)

karmi

Ruby, JavaScript, Go
3,975
star
36
Patrik Simek (@patriksimek)

patriksimek

CoffeeScript, JavaScript, PLpgSQL
3,864
star
37
Filip Hracek (@filiph)

filiph

Dart, JavaScript, HTML
3,799
star
38
David Grudl (@dg)

dg

PHP, HTML
3,632
star
39
Jindra Petřík (@jindrapetrik)

jindrapetrik

Java, C++, ActionScript
3,630
star
40
Daniel Milde (@dundee)

dundee

Python, Go, PHP
3,617
star
41
Source (@madebysource)

madebysource

JavaScript, Objective-C, CoffeeScript
3,595
star
42
Hana Dusíková (@hanickadot)

hanickadot

C++
3,538
star
43
Matheus Fernandes (@matheuss)

matheuss

JavaScript, HTML, TypeScript
3,535
star
44
Igor Kulman (@igorkulman)

igorkulman

C#, Swift, JavaScript
3,484
star
45
Kiwi.com (@kiwicom)

kiwicom

JavaScript, Python, HCL
3,437
star
46
Keen Software House (@KeenSoftwareHouse)

KeenSoftwareHouse

C#, C++, HTML
3,176
star
47
Salsita Software (@salsita)

salsita

JavaScript, Python, TypeScript
3,127
star
48
Janko Marohnić (@janko)

janko

Ruby, HTML, JavaScript
3,048
star
49
@swarmpit

swarmpit

Shell, Less, Go
3,032
star
50
Jan Mrázek (@yaqwsx)

yaqwsx

Python, C++, C
3,029
star
51
CZ.NIC (@CZ-NIC)

CZ-NIC

Python, C, JavaScript
2,874
star
52
Pavel Stehule (@okbob)

okbob

C
2,873
star
53
@CESNET

CESNET

C, Python, C++
2,833
star
54
Dmytro Mishkin (@ducha-aiki)

ducha-aiki

Jupyter Notebook, Python, C++
2,655
star
55
Contributte (@contributte)

contributte

PHP, CSS, Latte
2,578
star
56
Inmite s.r.o. (@inmite)

inmite

Java, JavaScript, CSS
2,556
star
57
Michal Spicka (@elendirx)

elendirx

HTML
2,255
star
58
Martin Lapiš (@lapism)

lapism

Kotlin
2,232
star
59
Schemathesis.io (@schemathesis)

schemathesis

Python
2,152
star
60
@ApiGen

ApiGen

HTML, PHP
2,150
star
61
@martinrotter

martinrotter

C++, TeX, C#
2,100
star
62
Zdenek Kalal (@zk00006)

zk00006

MATLAB
2,090
star
63
Vojtěch Krása (@krasa)

krasa

Java, Kotlin, C++
2,062
star
64
@Brightify

Brightify

Swift, Kotlin, Java
2,042
star
65
Andrei Kvapil (@kvaps)

kvaps

Shell, HTML, Go
2,026
star
66
Futured (@futuredapp)

futuredapp

Swift, Kotlin, Ruby
1,971
star
67
Michal Krenek (Mikos) (@xmikos)

xmikos

Python, Shell, C
1,967
star
68
Petr Baudis (@pasky)

pasky

Python, Perl, TeX
1,883
star
69
Michal 'vorner' Vaner (@vorner)

vorner

Rust, SCSS
1,856
star
70
David Samuel (@davda54)

davda54

Python, C#, C++
1,845
star
71
Patrik Holop (@PatrikH0lop)

PatrikH0lop

C, Python
1,792
star
72
Michal Danilák (@Mimino666)

Mimino666

Python, C++
1,725
star
73
Avocode (@avocode)

avocode

CoffeeScript, JavaScript, HTML
1,693
star
74
Jiri Spac (@capaj)

capaj

JavaScript, TypeScript, CSS
1,692
star
75
Martin Kníže (@Martz90)

Martz90

CSS
1,689
star
76
Petr Nohejl (@petrnohejl)

petrnohejl

Python, Java, C++
1,685
star
77
ÚFAL (@ufal)

ufal

Python, Perl, C++
1,677
star
78
Davide Pollicino (@omonimus1)

omonimus1

Python, C++, JavaScript
1,671
star
79
Josef Prusa (@josefprusa)

josefprusa

JavaScript, OpenSCAD, Python
1,671
star
80
Urbandroid Team (@urbandroid-team)

urbandroid-team

Kotlin, Java, JavaScript
1,653
star
81
Matěj Týč (@matejak)

matejak

Python, Shell, M4
1,651
star
82
Jiří Stránský (@jistr)

jistr

Shell, Python, Ruby
1,634
star
83
Dávid Ocetník (@ocetnik)

ocetnik

Java
1,588
star
84
Marcel Dopita (@moneytoo)

moneytoo

Java, JavaScript, HTML
1,584
star
85
Tolgee (@tolgee)

tolgee

TypeScript, Vue, PHP
1,559
star
86
Michael Grafnetter (@MichaelGrafnetter)

MichaelGrafnetter

C#
1,559
star
87
Lukáš Vlček (@lukas-vlcek)

lukas-vlcek

Java, Shell, JavaScript
1,543
star
88
dcbuilder.eth (@dcbuild3r)

dcbuild3r

JavaScript, Rust, Python
1,539
star
89
BOOT!Q Creative (@blueberryapps)

blueberryapps

JavaScript, Ruby, TypeScript
1,502
star
90
SatoshiLabs (@satoshilabs)

satoshilabs

Markdown
1,498
star
91
Martin Mitáš (@mity)

mity

C, C++, PHP
1,498
star
92
Minexew (@minexew)

minexew

Python, HolyC, C++
1,494
star
93
Josef Šimánek (@simi)

simi

Ruby, CSS, C
1,467
star
94
Michal Doubek (@coofcookie)

coofcookie

C#
1,440
star
95
Slevomat (@slevomat)

slevomat

PHP
1,424
star
96
CRoCS (@crocs-muni)

crocs-muni

Python, Java, C++
1,415
star
97
Vladimír Gorej (@char0n)

char0n

JavaScript, Python, Java
1,412
star
98
Stratosphere IPS (@stratosphereips)

stratosphereips

Python, Jupyter Notebook, Zeek
1,411
star
99
Maciej Treder (@maciejtreder)

maciejtreder

TypeScript, JavaScript, Java
1,405
star
100
Petr Gotthard (@gotthardp)

gotthardp

Erlang, Makefile, C
1,403
star

Statistics

By location

Prague 64.2%
Brno 21.2%
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
8.2%
PHP
8.1%
Other
44.8%

World rating by programing language (country/rank)

Shell
21
TeX
22
C
24
C++
26
Rust
26

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