Open-Source Tools Built With TypeScript (2026)
Self-hostable software written in TypeScript.
If you prefer to run software written in TypeScript — for easier auditing, contributing, or self-hosting on a stack your team already knows — these 17 open and self-hostable tools are built with it. TypeScript projects tend to be easy to deploy alongside the rest of your TypeScript infrastructure.
Fair-code workflow automation built for technical teams — self-host or use the cloud.
- Unlimited workflow runs when self-hosted — no per-task billing
- Code nodes let developers drop into JS or Python for anything the UI can't express
- Fair-code license (Sustainable Use) restricts commercial redistribution of the source
Open-source Firebase alternative built on Postgres with auth, storage, realtime, and edge functions.
- Full SQL and the entire Postgres extension ecosystem — no NoSQL trade-offs
- Apache-2.0 licensed and self-hostable with a single Docker Compose command
- Free tier pauses inactive projects after one week, breaking always-on demos
Open-source local-first workspace merging a rich document editor, an infinite whiteboard, and a structured database.
- Unique whiteboard-meets-document approach covers brainstorming and structured writing in one tool
- Local-first CRDT engine means your data exists on disk before any sync
- Younger project than Notion or AppFlowy — some database features remain early-access
Turn any MySQL, Postgres, SQLite or SQL Server database into a smart spreadsheet UI.
- Works with databases you already own — no data migration required
- Both REST and GraphQL APIs generated automatically for every table
- AGPL-3.0 license complicates embedding in proprietary SaaS without a commercial license
Open-source BaaS with auth, databases, storage, functions, and messaging in a self-hosted package.
- Broad SDK coverage across mobile, web, and cross-platform frameworks under one consistent API
- Built-in messaging for push, email, and SMS removes a common third-party integration
- Managed cloud platform is newer and smaller than Supabase's with fewer global regions
Open-source project management platform in the style of Linear, Jira, and Asana.
- Fast, modern UI that mirrors Linear's keyboard-driven workflow
- Free self-hosted Community edition with no user cap
- AGPL-3.0 core means any modified, network-served fork must publish its source
Modern open-source CRM with a Notion-style UI and developer-first architecture.
- Clean, modern UI that feels fast and uncluttered
- Fully customizable data model without needing a consultant
- Relatively young project — some enterprise features still maturing
Open-source scheduling infrastructure for individuals and teams — self-host or use the cloud.
- Self-hostable with full data ownership under AGPL
- Generous free cloud tier for individuals
- Self-hosting requires a PostgreSQL database and more infrastructure than a hosted SaaS
Fast, collaborative team wiki with Markdown editing, nested collections, and a self-hostable server.
- Clean, fast reading and writing experience purpose-built for team wikis
- Self-hostable with Docker — source available under BSL with a one-year delay to open source
- BSL license means commercial redistribution is restricted; it is not classic OSI open source
Simple, self-hostable analytics with MIT licensing, no pageview caps, and a free cloud tier.
- MIT license — fully free to self-host with no feature gates or pageview limits
- Deploys in minutes to Vercel or any Node host without operational complexity
- No native funnels, session replay, or A/B testing capabilities
Open-source all-in-one project management platform combining issues, docs, and chat.
- Genuinely replaces several tools at once (PM + docs + chat) in a single self-hosted stack
- Fast, modern UI comparable to Linear/Notion
- Huly Inc discontinued its own hosted cloud service in 2026 — self-hosting is now the only supported path
Open-source, self-hosted kanban and table boards in the style of Trello and Notion.
- Genuinely lightweight — a single binary can run a personal server
- MIT licensed with no paid tier or feature gate at all
- Mattermost stopped actively developing it in 2023; it's now community-maintained only
MIT-licensed no-code automation platform with an AI-first design and clean Zapier-like interface.
- Pure MIT license — no commercial-use restrictions unlike n8n's fair-code terms
- No-code-first UX makes it accessible to non-developers
- Smaller connector library than Zapier or n8n today
Open-source no-code database built natively on Postgres — real-time, API-first, and Airtable-compatible.
- Pure Postgres-native storage means you can query Teable data directly via SQL
- Real-time collaboration built in from the ground up, not added on
- Younger project with a smaller community and integration ecosystem than NocoDB or Baserow
Open-source self-hosted PaaS with a web dashboard, Docker Swarm orchestration, and one-click app templates.
- Web UI makes self-hosted PaaS accessible to teams unfamiliar with terminal deployments
- One-click app catalog covers most common open-source stacks instantly
- Docker Swarm is less popular than Kubernetes for large-scale production workloads
Open-source DocuSign alternative for self-hosted digital document signing with no per-envelope fees.
- AGPL-licensed with full self-hosting — signing data never leaves your own infrastructure
- Per-seat cloud pricing with no per-document or per-envelope fees at any volume
- AGPL-3.0 license requires sharing modifications if you distribute the software commercially
Open-source experience-management platform for targeted in-app and link surveys.
- AGPL core is free with unlimited responses on self-hosted deployments
- Event-based targeting lets you survey specific user cohorts at precise moments
- AGPL license requires open-sourcing modifications if distributed commercially