Rankings
Top 20 repos in each star tier, ranked by AI quality score.
JavaFX-based 2D game framework with strong academic adoption, modest but stable growth
Official Firebase UI toolkit for Android—modular bindings for auth, database, and storage with steady maintenance.
Kotlin-native testing framework with property testing and multiplatform support, actively maintained but competing in mature market
Privacy-focused Android browser maintained by DuckDuckGo, modest but steady adoption among privacy-conscious users
Focused Android surveyor for OpenStreetMap; makes OSM editing accessible without tagging knowledge
On-device HTTP inspector for Android developers; a maintained fork of Chuck with OkHttp integration.
JetBrains' Kotlin-native AI agent framework targeting JVM enterprises, launched May 2025
Square's protobuf code generator for mobile and JVM platforms with built-in gRPC support
Official Jellyfin client for Android TV platforms, actively maintained within a self-hosted media ecosystem
Gradle plugin for automated dependency and license metadata collection with Compose UI for Android and Multiplatform
Gradle fat JAR plugin with package relocation, now stewarded by GradleUp after 13-year legacy
Kotlin code generation library for programmatic .kt file creation
Gradle plugin for discovering dependency updates; foundational tool in Java/Kotlin build ecosystem
Local Android music player emphasizing simplicity and modern media libraries over feature bloat
Balloon: Production-grade tooltip library for Android with 800K monthly downloads, actively maintained through 2026
Kotlin/Android GraphQL client from Apollo, mature and actively maintained for JVM and multiplatform
Android RecyclerView adapter library with modular architecture, serving niche but stable adoption since 2015
Kotlin reference app demonstrating ChatGPT integration on Android using Jetpack Compose and Stream Chat SDK
Official Android port of VLC maintaining broad format support and hardware acceleration across Android, TV, and ChromeOS
JetBrains' official API documentation engine for Kotlin, with stable multi-format support and broad ecosystem adoption.