Top Open Source Projects Built With Kotlin in 2026
A curated collection of the 15 best free and open-source projects built using Kotlin. Discover popular repositories, architecture patterns, and trending software in 2026.
Showly
Ultimate TV show and movie tracker
Stars1,449Last commit4mo agoLicenseGPL-3.0SeriesGuide
Android app for tracking TV shows and movies you're watching, have watched, or plan to watch, powered by TMDb data.
Stars2,147Last commit17d agoLicenseOpen Source
Tolgee
Open-source localization platform for developers
Stars4,081Last commit10d agoLicenseOpen Source
Signal
Privacy-first encrypted messaging app
Stars29,260Last commit11d agoLicenseAGPL-3.0
Paralino
Private encrypted location sharing for families
Stars53Last commit1mo agoLicenseAGPL-3.0OSMAnd
Offline mobile maps and navigation
Stars5,932Last commit10d agoLicenseOpen Source
Orbital
Self-healing API and data integration platform
Stars361Last commit6mo agoLicenseOpen Source
OpenClaw
Open-source AI assistant for your chat apps
Stars387,778Last commit10d agoLicenseOpen SourceLocalSend
Open-source cross-platform file sharing tool
Stars89,489Last commit14d agoLicenseApache-2.0Kilo
Open source AI coding agent with 500+ models, bring-your-own-key support, and specialized modes for writing, debugging, and planning code across IDEs and CLI.
Stars27,041Last commit10d agoLicenseMITExpensify
Automate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.
Stars5,013Last commit10d agoLicenseMIT
Continue
Open-source coding agent for developers
Stars35,644Last commit1mo agoLicenseApache-2.0
Bluesky
Decentralized social network with custom feeds
Stars18,241Last commit11d agoLicenseMIT
Affine
Open-source Notion & Miro alternative with docs, whiteboards, databases, and AI in one local-first workspace
Stars71,941Last commit10d agoLicenseOpen Source
Airbyte
Open-source data integration for AI agents
Stars21,963Last commit11d agoLicenseOpen Source
