Find the Best Open Source Alternatives to Popular Software

Open-source virtual whiteboard for creating hand-drawn style diagrams and sketches.

Terminal-based stock market visualizer that displays real-time stock graphs directly in your terminal.

Open-source financial data platform for analysts, quants, and AI agents — a free alternative to Bloomberg Terminal.

Open source customer feedback platform to collect, organize, and prioritize feature requests from users.

Open-source uptime monitoring and status page platform with synthetic checks from 28 global regions and multi-channel alerting.

Self-hosted Kanban and scrum project management tool with real-time collaboration, sprints, and anonymous shareable boards.

Self-hosted, real-time collaborative travel planner with itineraries, maps, budgets, and packing lists.

Markdown-based note-taking app with powerful live queries, templates, and a pluggable scripting system for power users.

Minimalist, federated blogging platform for writers who want a clean, distraction-free space to publish.

Network-wide DNS-based ad and tracker blocker with parental controls, DNS rewrites, and detailed query logging.

Federated link aggregator and community discussion platform — a decentralized, self-hostable alternative to Reddit.

Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.