A private messenger for Android.
Kotlin
Tools whose repository GitHub reports as mostly Kotlin.
34 tools
Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 14k
- Latest
- K9MAIL_24_0
- Last push
- 2026-10-06
An alternative frontend for YouTube, for Android.
AnkiDroid: Anki flashcards on Android. Your secret trick to achieve superhuman information retention.
A feature-rich weather app with good visualizations and more than 50 sources.
Loop Habit Tracker, a mobile app for creating and maintaining long-term positive habits
An Android RSS reader presented in Material You style.
Lightweight vault and password manager for Android, KeePassDX allows editing encrypted data in a single file in KeePass format and fill in the forms in a secure way.
Static code analysis for Kotlin
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 7.1k
- Latest
- v1.23.8
- Last push
- 2026-10-05
An anti-bikeshedding Kotlin linter with built-in formatter
Media server for comics/mangas/BDs/magazines/eBooks with API, OPDS, Kobo Sync and KOReader Sync support
The SMS Gateway for Android™ app enables sending and receiving SMS messages through an API that can be accessed directly on the device or via a cloud server when direct device access is not possible.
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 5.8k
- Latest
- v1.77.1
- Last push
- 2026-10-05
Bringing Astrid Tasks back from the dead
DNS over HTTPS / DNS over Tor / DNSCrypt client, WireGuard proxifier, firewall, and connection tracker for Android.
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 5.5k
- Latest
- v0.5.7
- Last push
- 2026-09-28
A search-focused Android launcher
Easy to use OpenStreetMap editor for Android
Third-party native Jellyfin Android app
Minimal AF Launcher for Android. Reduce your screen time. Daily wallpapers.
API documentation engine for Kotlin
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 3.8k
- Latest
- v2.2.0
- Last push
- 2026-09-30
Jitsi Videobridge is a WebRTC compatible video router or SFU that lets build highly scalable video conferencing infrastructure (i.e., up to hundreds of conferences per server).
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 3.1k
- Latest
- stable/jitsi-meet_11248
- Last push
- 2026-10-05
Android feed reader app
Pocket Casts Android 🎧
A FOSS Git multiplatform client for newbies and pros
Open-source weight and body metrics tracker, with support for Bluetooth scales
Android Matrix messenger application using the Matrix Rust Sdk and Jetpack Compose
The leading open-source AI copilot for JetBrains. Connect to any model in any environment, and customize your coding experience in any way you like.
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 1.9k
- Latest
- 3.8.1
- Last push
- 2026-05-28
Lightweight and easy-to-use repository management software dedicated for the Maven-based artifacts in the JVM ecosystem 📦
- Language
- Kotlin
- Licence
- Apache-2.0
- Stars
- 1.9k
- Latest
- 3.6.3
- Last push
- 2026-10-01
Read-only mirror of Grayjay repo for issue tracking
Nostr client for Android
Source code for 2FAS Auth Android app
A smallish Android RSS reader
- Language
- Kotlin
- Licence
- GPL-3.0
- Stars
- 1.4k
- Latest
- 2026.07.1212
- Last push
- 2026-10-06
A native Android app for Lemmy
Session Android - A Decentralized, Onion Routed, Private Messenger
Kuvasz (pronounce as [ˈkuvɒs]) is an open-source uptime and SSL monitoring service, with multiple notification channels, status pages, IAC support via YAML, Prometheus integration, a complete REST API and many more!