Open source. Open possibilities.

Komi Store is a free, open-source cross-platform app store that indexes releases published on GitHub, Codeberg and Forgejo, letting users browse, discover and install open-source software with one click.

Gradle is a scalable build automation tool supporting Java, Kotlin, Scala, Android, Groovy, C++ and Swift, with IDE and CI integration plus extensive documentation and community resources.

2024 Programming Challenges Roadmap: step-by-step exercises, solutions, videos, and rankings. Use any language and contribute your solutions.

A Kotlin library that bridges JetBrains Koog with Spring AI and LangChain4j, providing LLM client adapters and a fluent AI Agent Builder for constructing complex agent behaviors.

Okio is a modern I/O library for Android, Java, and Kotlin Multiplatform that complements java.io and java.nio to simplify data access, storage, and processing. Originally part of OkHttp, it is well-exercised and production-ready.

sqlc generates type-safe code from SQL queries, supporting multiple languages via plugins. It compiles SQL to idiomatic code, reducing boilerplate and errors.

Simple Multi Apps - Kotlin is an open-source Android application featuring a modular collection of tools including a stopwatch, games, PDF reader, and video player.

Exposed is a lightweight Kotlin SQL framework and ORM providing a typesafe DSL and DAO API for relational database access, supporting JDBC and R2DBC drivers across multiple database engines.

A highly customizable calendar library for Android and Compose Multiplatform, providing the logic for date displays while allowing developers to define the UI.

A web tool that visualizes a GitHub user's profile and activity as charts and statistics, with a hosted demo and self-hosting instructions.

Gatling is an open‑source load‑testing platform that lets you write performance tests as code in Java, JavaScript/TypeScript, Kotlin or Scala. It uses a non‑blocking, asynchronous engine for high scalability, supports HTTP, WebSocket, SSE, JMS, gRPC and MQTT, and integrates with CI/CD pipelines, APM tools and observability platforms.

Antares is an open-source digital circuit learning platform written in Kotlin. It provides tools to design and simulate digital circuits with embedded explanations, featuring a Swing-based desktop application.

An AI-first engineering toolkit that provides specialized knowledge, workflows, and standards to turn AI coding agents into senior mobile engineers.

filepicker is a high-performance, all-in-one file picker library for Android. It blends WeChat and Douyin visual styles, implements smooth slide multi-select gestures like Huawei Gallery, supports images, videos, audio, documents, APK, archives, and offers customizable filtering and UI configuration.

Official Kotlin repository: JetBrains' concise multiplatform programming language, with compiler, standard library, Gradle build automation, Kotlin/Native support, and contributor guidelines.

LeakCanary is an open-source memory leak detection library for Android, maintained by Square. It helps developers find and diagnose memory leaks in Android apps, with documentation hosted at square.github.io/leakcanary.

A personal repository collecting coding challenges and exercises for learning various programming languages, frameworks, tools, architectures, and design patterns. Not intended as a teaching resource but as a personal learning portfolio.

Keep is an Android app for FROST threshold signing of Nostr events, implementing NIP-55 and NIP-46 so keys are split across shares and never held whole on one device.

Source-available engineering standards for AI coding agents, with rules, platform-specific guidelines, and automated enforcement checks (Python scanner, git hooks, linter configs) for iOS, macOS, Android, React Native, Web, and Python projects.

A Flutter plugin providing native circular and rectangular image cropping for Android, iOS, macOS, and Web platforms via a federated plugin structure.