Open source. Open possibilities.

Spring AI is a Spring-native application framework for AI engineering, offering portable, strongly-typed APIs that connect enterprise data and APIs with major AI model providers and vector stores.

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.

Kestra is an open-source, event-driven orchestration platform designed for data, AI, and infrastructure workflows, utilizing a declarative YAML interface.

SmartTube is a free, open-source media client for Android TVs and TV boxes. It features SponsorBlock integration, 8K/60fps playback, HDR support, and does not require Google Services.

mall is a complete open-source e-commerce system based on Spring Boot + MyBatis, featuring front-end store and back-end management, Docker deployment support, along with learning tutorials, microservices version, and front-end projects.

Spring Boot is an opinionated, production-grade framework for building stand-alone Spring-based Java applications and services. It offers embedded servers, security, metrics, health checks, and simplified configuration, with no code generation or XML requirements.

Olla Nest is a self-hosted, admin-controlled AI workspace that integrates local Ollama models and cloud providers with an automatic request router.

A deterministic vertical shoot 'em up game built from scratch in Java, featuring a platform-agnostic core that runs on both desktop and web browsers.

Apache Spark is a unified analytics engine designed for large-scale data processing, offering high-level APIs and an optimized engine for general computation graphs.

OpenRefine is a Java-based open-source power tool designed for cleaning, transforming, and reconciling messy data through a web browser interface.

Creator Mods Suite is a production suite for Minecraft 1.21.1 creators and streamers, offering eight independently toggleable features across NeoForge and Fabric. It includes a Director's Toolkit for recording control, an animated boss, keybind abilities, world events, weapons, and more, designed to facilitate seamless content creation without leaving the game.

Apache Flink is an open-source stream processing framework providing powerful capabilities for both data streaming and batch processing.

Appsmith is an open-source low-code platform for building admin panels, internal tools and dashboards. It connects to 25+ databases and any API, and can be self-hosted via Docker, Kubernetes or AWS AMI.

OpenSearch is an open-source, enterprise-grade distributed search and observability suite designed to manage unstructured data at scale.

Proof-of-concept tool that generates serialized Java payloads exploiting unsafe object deserialization, bundling 30+ gadget chains for libraries such as Commons Collections, Spring, Groovy and Hibernate, intended for security research and authorized testing.

Apache Beam is a unified programming model for defining both batch and streaming data-parallel processing pipelines.

LibGDX endless runner project 'Dino Run', developed during a FliSoL 2017 workshop. Includes core, desktop, and Android modules. Completed and no longer maintained.

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.

Sa-Token is an open-source Java authentication framework offering login, permission validation, distributed sessions, gateway auth, SSO, OAuth2.0, JWT, API Key signing, with out-of-the-box support for SpringBoot and Solon.