Eclipse Open VSX is a full-stack, vendor-neutral open-source registry for VS Code extensions, serving as an alternative to the Visual Studio Marketplace. The system comprises three main components: a Java/Spring Boot server that manages extension publishing, security scanning, rate limiting, download analytics, and trusted publishing via OIDC; a React/TypeScript web UI (MUI, TanStack Query) for browsing, searching, and administering extensions; and a Node.js CLI for publishing, verifying, and managing extensions. The server uses PostgreSQL with Flyway migrations, optional Elasticsearch for search, TimescaleDB for time-series download analytics, and Valkey/Redis for caching and rate limiting. Storage is abstracted over local filesystem, AWS S3, Azure Blob, and Google Cloud Storage. The architecture is a monolith with background job processing via JobRunr, and it exposes both a custom REST API and a VS Code Gallery-compatible API for seamless integration with VS Code and other editors.
This is the Spring Tools 4 (STS4) repository, a comprehensive set of IDE tooling for Spring Boot development. It provides language servers (LSP) for Spring Boot (Java, YAML, properties, XML), Concourse CI, BOSH, and Cloud Foundry manifests, along with Eclipse plugins and VS Code extensions. The architecture separates headless language servers (built as Spring Boot applications) from IDE-specific frontends, with shared commons libraries for YAML, Java project indexing, metadata, and live process monitoring via Actuator. The codebase is professional and well-structured but shows signs of organic growth over a decade, with some code duplication between the Eclipse and headless/VS Code paths, deprecated API usage, and developer-specific hardcoded paths. It is actively maintained by VMware/Spring engineering team with strong CI/CD pipelines.