Open Source Kotlin Projects
Kotlin is a statically typed programming language designed to work with Java while offering concise syntax and built-in null-safety features. It is used to build mobile, server-side, desktop, and multiplatform software. Its interoperability with Java lets teams adopt it alongside existing code, while shared-language support can reduce duplication across applications and services.
Open source Kotlin tools include libraries, frameworks, developer utilities, and complete applications. When choosing one, review its license, documentation, maintenance activity, supported Kotlin and platform versions, and compatibility with your existing stack. Consider whether it meets your performance, security, and deployment requirements, and check the quality of its tests and community support. Kotlin resources are useful to application developers, backend engineers, and teams exploring shared code across platforms.
5 repositories · updated October 9, 2026
tramAI: Govern AI Workflows on the JVM
TramAI is a Kotlin-first JVM runtime for typed AI workflows with configurable policy, provider routing, tool controls, approvals, and execution evidence. It suits teams that need governance around model use, not just a way to call an LLM.
NewHealth 45/100
Smart-AutoClicker: Automate Android Taps with Image Detection
Smart-AutoClicker, now presented as Klick'r, automates Android clicks and swipes using image detection or a simpler regular mode. It suits repetitive tasks and interaction testing where actions need to respond to on-screen elements.
ActiveHealth 55/100
ImageToolbox: Edit, Convert, and Process Images on Android
ImageToolbox is a feature-rich Android app for photo editing, image conversion, OCR, PDF tasks, and other media workflows. It suits users who want many image utilities in one place, with distribution through Google Play, F-Droid, and GitHub releases.
ActiveHealth 79/100
BCR: Automatically Record Calls on Rooted Android
BCR is a background call recorder for Android 9+ devices with root access or compatible custom firmware. It records cellular calls automatically and saves them in configurable audio formats, without network access.
ActiveHealth 69/100
CertoraProver: Formally Verify Smart Contracts
Certora Prover checks smart contracts against formal specifications to find violations before deployment. It targets developers and security teams working with EVM-based chains, Solana, or Stellar who need automated verification.
ActiveHealth 57/100