Top Open Source Projects using Kotlin
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
GPL-3.0Android and iOS app for tracking TV shows and movies, managing watchlists, and syncing viewing history with Trakt.tv across devices.
SeriesGuide
Android app for tracking TV shows and movies you're watching, have watched, or plan to watch, powered by TMDb data.
Tolgee
NOASSERTIONManage app translations with in-context editing, AI translation, and collaborative tools. Self-hostable and free to start.
Signal
AGPL-3.0Secure messaging app with state-of-the-art encryption, voice/video calls, group chats, and file sharing. No ads, trackers, or data collection.
Paralino
AGPL-3.0Share your real-time location with family and friends using end-to-end encryption, geofence alerts, travel history, and multi-device tracking.
OSMAnd
NOASSERTIONComprehensive offline navigation app with detailed maps, turn-by-turn guidance, and specialized routing for hiking, cycling, and walking worldwide.
Orbital
NOASSERTIONAutomated data integration platform that connects APIs, databases, and event streams using semantic schemas. Deploy secure integrations in minutes with Git-based workflows.
OpenClaw
NOASSERTIONA personal AI assistant that connects to your existing chat apps and handles real tasks like email, calendar, and flight check-ins on your behalf.
LocalSend
Apache-2.0Free, open-source file sharing tool for nearby devices. Cross-platform support with end-to-end encryption, no registration required, automatic device discovery.
Kilo
MITOpen 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.
Expensify
MITAutomate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.
Continue
Apache-2.0Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.
Bluesky
MITA decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.
Affine
NOASSERTIONOpen-source Notion & Miro alternative with docs, whiteboards, databases, and AI in one local-first workspace
Airbyte
NOASSERTIONSeamlessly sync data from any source to any destination with a flexible, extensible platform that grows with your data needs.
