All organizations · GSoC 2026 · End user applications, Web

Open Transit Software Foundation

Help make public transit better

We are the home for the OneBusAway project. OneBusAway is a suite of open source transit information tools based on real-time vehicle data. OneBusAway is a suite of open source transit information tools that enable transit agencies to provide real-time vehicle locations, alerts, and arrival information to riders, with iOS and Android apps, a web platform, and robust APIs, as well as back office support. OneBusAway lets transit agencies be in control, without needing to build everything themselves and without cutting corners.

android
java
golang
docker
ios

apps
Transit
travel
bus

Project ideas

4 ideas on its 2026 ideas page; of the 4 that state a difficulty: 4 hard.

Modernize the iOS App UI hard
Maglev: Next Generation REST API Server hard
Vehicle Tracker: Realtime Vehicle Positioning for Developing Countries hard
Wayfinder: Feature Development, Accessibility, and Quality hard

Read the ideas page. Ideas are for scope reference; never copy one into a proposal.

History

In GSoC since 2024, 3 years. Projects per year: '24: 5, '25: 4, '26: 4.

On GitHub

32 repositories pushed to in the last year. Main languages: Go (10), Java (3), Kotlin (3), JavaScript (2), Python (2), Ruby (2).

Links and channels

Website: https://opentransitsoftwarefoundation.org
Ideas page: https://opentransitsoftwarefoundation.org/2026/01/google-summer-of-code-2026-project-ideas/
Contributor guide: https://opentransitsoftwarefoundation.org/2024/02/how-to-craft-a-successful-gsoc-proposal/
Source code: https://github.com/onebusaway
Chat: https://opentransitsoftwarefoundation.org/join-our-slack

go deeper in your terminal

git-into-gsoc org "Open Transit Software Foundation" --shortlist
git-into-gsoc repos "Open Transit Software Foundation"
git-into-gsoc issues --org "Open Transit Software Foundation"

or ask your assistant:
"Which Open Transit Software Foundation repositories merge
newcomers' pull requests, and which beginner
issues are still free?"

Those commands read live data: which repositories merge outside pull requests, and which beginner issues nobody has claimed. Install in two minutes.