
Virtual whiteboard for sketching hand-drawn like diagrams

Excalidraw is a free, open-source virtual whiteboard for creating hand-drawn style diagrams, wireframes, and sketches. Built with TypeScript and featuring real-time collaboration with end-to-end encryption, it provides an intuitive canvas-based drawing experience that's both powerful and easy to use.
.excalidraw JSON format for seamless re-editingDevelopers, designers, product managers, and teams who need a lightweight, collaborative whiteboarding tool for technical planning and visual communication. It's ideal for anyone seeking an open-source alternative to proprietary diagramming tools that doesn't sacrifice functionality or ease of use.

Penpot: The open-source design tool for design and code collaboration

Database diagrams editor that allows you to visualize and design your DB with a single query.

Kanban project management software

Visual builder for React. Build apps, websites, and content. Integrate with your codebase.

Loomio is a collaborative decision making tool

Explore, document and optimize any database

CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

Give your AI agent eyes to see the entire internet. Read & search Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu — one CLI, zero API fees.

🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.

🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.

General-purpose AI designed for knowledge workers — creators, strategists, and operators — and individuals seeking AI systems they can truly control to help them get work done, with full flexibility to extend and deploy anywhere (VPC, on-prem, or cloud).

:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integrates with OpenTelemetry, LangChain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

Infisical is the open-source platform for secrets, certificates, and privileged access management.

🎧 Your Personal Streaming Service

A self hosted virtual browser that runs in docker and uses WebRTC.