Open Source Trends in 2025

The open source landscape in 2025 is defined by three major trends. First, Rust adoption continues accelerating in infrastructure projects, with major companies like AWS, Google, and Microsoft contributing to Rust-based tools. Second, TypeScript has become the default for new JavaScript projects, with Deno and Bun both shipping first-class TypeScript support. Third, AI and machine learning repositories are the fastest growing category, with frameworks like PyTorch, LangChain, and Ollama attracting thousands of new contributors. Other notable trends include the rise of Bun as a Node.js alternative, the maturation of WebAssembly for server-side applications, and growing interest in local-first software architectures that prioritize offline capability.