TECHNOLOGY

CSS

36 organizations list CSS. Together they took 1,294 accepted projects from 2016 to 2026.

In GSoC 2026

of 36 organizations

Contributors in 2026

101

8.9% of all slots

Projects since 2016

1,294

35.9 per organization

First listed

2016

Latest 2026

Organizations

All cycles

Per cycle

View as table

Per cycle

View as table

2026 organizations using CSS
Organization	Stack	2026	Cycles	Projects
AOSSIEEnd user applications	ScalaAndroid/iOS+16	22	10/11	139
ZulipEnd user applications	PythonJavaScript+8	11	11/11	146
OpenMRSScience and medicine	JavaHTML5+13	8	11/11	102
Wikimedia FoundationWeb	JavaScriptHTML+8	8	10/11	93
National Resource for Network Biology (NRNB)Science and medicine	PythonJavaScript+12	7	11/11	126
Open Technologies Alliance - GFOSSScience and medicine	PythonMySQL+18	7	9/11	77
Oppia FoundationEnd user applications	PythonJavaScript+9	7	11/11	84
JenkinsProgramming languages	JavaGroovy+8	5	9/11	38
OpenAstronomyScience and medicine	CPython+8	5	11/11	82
Cuneiform Digital Library Initiative (CDLI)Science and medicine	PythonMariaDB+11	4	6/11	34
United Nations Office of Information Communication TechnologyEnd user applicationsNew	PythonJavaScript+1	4	1/11	4
Uramaki LABEnd user applications	PythonJavaScript+3	4	3/11	12
Joomla!End user applications	JavaScriptHTML+7	3	8/11	39
Learning UnlimitedEnd user applicationsNew	PythonJavaScript+3	3	1/11	3
SubmittyEnd user applications	PythonC+++8	3	7/11	22

Earlier organizations using CSS
Organization	Stack	2026	Cycles	Projects
Measurement LabDataLast in 2026	PythonJavaScript+3	–	0/11	0
freifunkOperating systemsLast in 2025	CLua+15	–	9/11	74
Fedora ProjectOperating systemsLast in 2025	PythonPostgreSQL+19	–	6/11	27
InkscapeEnd user applicationsLast in 2025	PythonC+++7	–	10/11	27
Plone FoundationWebLast in 2025	PythonJavaScript+7	–	7/11	26
Purr DataEnd user applicationsLast in 2024	JavaScriptC+9	–	7/11	15
Creative CommonsWebLast in 2024	PythonPostgreSQL+7	–	4/11	14
XWikiWebLast in 2023	JavaScriptJava+4	–	8/11	12
Open Bioinformatics Foundation (OBF)Science and medicineLast in 2022	PythonJava+13	–	7/11	45
MozillaWebLast in 2020	PythonJavaScript+7	–	5/11	75
Inclusive Design InstituteEnd user applicationsLast in 2020	JavaScriptHTML5+5	–	3/11	11
Developers ItaliaOtherLast in 2019	PythonC+9	–	2/11	5
The Center for Connected Learning and Computer-Based ModelingProgramming languagesLast in 2019	JavaScriptJava+4	–	4/11	5
FOSDEMProgramming languagesLast in 2019	PostgreSQLRuby On Rails+7	–	3/11	4
TEAMMATES @ National University of SingaporeWebLast in 2018	JavaScriptJava+4	–	3/11	20
phpBB Forum SoftwareSocial and communicationLast in 2018	MySQLJavaScript+4	–	2/11	4
Free UK GenealogyDataLast in 2018	PythonMySQL+4	–	1/11	2
DiscourseSocial and communicationLast in 2017	JavaScriptRuby On Rails+5	–	2/11	6
ownCloudInfrastructure and cloudLast in 2017	JavaScriptHTML+6	–	2/11	5
Computational Science and Engineering at TU WienScience and medicineLast in 2016	JavaScriptJava+3	–	1/11	10