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I’m working on KMP implementations of mobility data formats like GBFS (bikeshare) and GTFS (transit). I’ve jut published the first module, a complete implementation of GBFS (General Bikeshare Feed Specification) v2.3: <https://code.sargunv.dev/mobility-data-kt/gbfs/>. You can use it to access real time data from <https://github.com/MobilityData/gbfs/blob/master/systems.csv|over a thousand> bike share, scooter share, and car share systems around the world.

The library is built with ktor, kotlinx-serialization, and spatial-k (for geojson). The models are published for all KMP targets. The HTTP client is published for all targets except wasi (because Ktor isn’t available there).

Next, I’ll be working on a GTFS (General Transit Feed Specification) implementation using <https://kotlinlang.slack.com/archives/C0BJ0GTE2/p1760511964545739|the CSV library I shared earlier> and a ZIP extraction library I’m currently working on.