Best open source tools

Open source platform for building and deploying durable AI agents and workflows in TypeScript.

Team messaging included in the eXo Platform collaboration suite.

Open source, end-to-end encrypted note taking app for Windows, macOS, Linux, Android, iOS and the web.

Use channel-based team chat with open-source hosting and no per-seat charge.

A local-first Markdown notebook with daily notes, history, and optional private sync.

An open-source academic notebook that brings Markdown notes, PDF annotations, and literature management together.

Keep encrypted workplace messaging on a self-hosted XMPP server.

Free offline expense tracking with recurring entries and category budgets

Keep topic-threaded team chat and its calls inside the conversation where they belong.

A browser-based font editor for hobbyists and beginners.

A distraction-free Markdown editor for local notes on Windows, macOS, and Linux.

A governed platform for AI development, with packages, models, workspaces, and orchestration.

Vector search engine for AI retrieval, with open-source and managed cloud options.

On-device AI SDKs for voice, language, and vision

A community-developed, open-source font editor.

A native macOS code editor with project tools, Git integration, and an extension system under active development.

Use a tagged timeline to record work and export time summaries.

Web data API to search, scrape and interact with the web for AI agents

Evaluate, monitor, and govern LLM apps in one workspace

AI developer platform with Opik for LLM observability, evaluation, and agent debugging.

Gradual, multilingual textual programming for the classroom

Open-source desktop app for running AI models on your own machine or connecting to online models.

Self-hosted newsletters with SQL segments and configurable SMTP queues

Traces AI agents in production and dispatches coding agents to fix failures.