Open source. Open possibilities.

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.

Cadence is an open-source distributed orchestration engine for building and running scalable, fault-tolerant, long-running workflows. It includes CLI tools, schema management, benchmarking, and canary health checks.

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

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.

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.

Apache Dubbo is a Java-based RPC and microservice framework supporting multiple protocols like Triple (gRPC-compatible), Dubbo2 TCP, and REST, with service discovery, traffic management, observability, and Spring Boot integration.

Baritone is an open-source Minecraft pathfinding bot that automates navigation, mining, and Elytra flight. It works as a chat-command mod on Forge, Fabric, and NeoForge, or as a Java API for custom clients.

Flowable is a compact, efficient workflow and BPM platform for Java developers, offering BPMN process, CMMN case, and DMN rule engines. It can run embedded or as a service, integrates with Spring, and provides Java and REST APIs.