Google Summer of Code (GSoC)
Which organisations answer newcomers?
253 organisations took part between 2024 and 2026. 200 have repositories measured so far, last updated 11 Oct 2026.
The ranking rule. Share of pull requests from outside the core team that got a reply from a person within 7 days, across all of the organisation's measured repositories. Ties go to the higher outside merge rate. An organisation needs at least 20 outside pull requests to take a place; smaller ones follow, unranked.
- organisations
- 253
- in GSoC 2024 to 2026
- measured
- 200
- with repositories on GitHub
- answered in 7 days
- 67%
- of 46,074 outside PRs, all organisations
- free first issues
- 270
- unclaimed right now
New to it? What Google Summer of Code is
- 1
A paid summer of open source
Each year Google funds new contributors to spend about 12 weeks building something for an open source project.
- 2
With a mentor
You work with a mentor from the organisation you applied to. You do not need to be a student, only new to open source and 18 or older.
- 3
You apply to an organisation
You write a proposal to one of the organisations below. That is why it matters which of them reply to newcomers.
Details and dates are on the official Google Summer of Code site.
Google Summer of Code 2027
Expected datesNow is the best time to start: contribute small fixes to the organisation you want, so the mentors know your name before applications open.
~14weeks until
organisations apply
organisations apply
Oct
Today
You are here.
Organisations
213 organisations measured on GitHub
- 1
Rspamd
Rspamd is an email framework and spam filter
GSoC 2025 · 9 repositories measured
cluac++rustclickhouse
- Reply in 7 days
- 97%
- 36 PRs
- Merged
Not measured
40 organisations cannot be measured on GitHub. They host their code elsewhere, or they are umbrella organisations whose projects change every year. They are listed so the ranking does not pretend they do not exist.
- BeagleBoard.org
- Blender Foundation
- Chromium
- Cuneiform Digital Library Initiative (CDLI)
- Debian
- Drupal Association
- EROFS filesystem
- Fedora Project
- FFmpeg
- FreeType
- GitLab
- GNOME Foundation
- GNU Compiler Collection (GCC)
- GNU Image Manipulation Program
- GNU Mailman
- GNU Octave
- GNU Project
- GNU Project
- Haiku
- Inkscape
- KDE Community
- LAPPIS
- LibreCube Initiative
- LibreHealth
- LibreOffice
- libssh
- libvirt
- MBDyn
- OpenAFS
- PostgreSQL
- Purr Data
- Python Software Foundation
- QEMU
- R project for statistical computing
- RTEMS Project
- Society for Arts and Technology (SAT)
