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Top 23 TypeScript Monorepo Projects
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Project mention: 15 merged IME fixes: the recurring ways Japanese typing breaks web apps | dev.to | 2026-10-06
twentyhq/twenty #22270: chat-thread input and attachment rename input.
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Mattermost | Remote (US and Canada) | FT | Multiple roles
Mattermost (https://mattermost.com) is an open-core collaboration and workflow automation platform for air-gapped, on-prem and private clouds. Our customers are in defense, intelligence, security and critical infrastructure, including the USAF and NASA. Y Combinator led our Series B, their largest open-source investment at the time.
Both openings are full stack on the core platform: Go backend, React/TypeScript frontend, PostgreSQL and Redis. The codebase is public (https://github.com/mattermost/mattermost), so most of what you build is too. We would rather hire people who ship and own complex software end to end than chase an exact stack match, so any systems or backend language and any frontend stack counts. What we look for in both roles: REST and WebSocket APIs with real networking fundamentals (HTTP, connection lifecycle), and relational databases including schema design and query optimization.
We use coding agents daily (Claude Code, Cursor, and others) at every stage of the work: planning, building, reviewing, testing, and shipping. We treat that as core craft rather than a shortcut around the fundamentals. If you have a track record of shipping and owning complex software end-to-end, we want to hear from you.
Senior Full Stack Engineer $142,723 - $172,723 USD
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lerna
Lerna is a fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages from the same repository.
Project mention: React Native Architecture: 8 Folder Structures for Scalable Apps | dev.to | 2026-08-16Tooling: Yarn Workspaces or Lerna as a starting point, often paired with Nx or Turborepo once the repo is big enough to need build caching and task orchestration.
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nx
The Monorepo Platform that amplifies both developers and AI agents. Nx optimizes your builds, scales your CI, and fixes failed PRs automatically. Ship in half the time.
Nx Plugin for AWS (@aws/nx-plugin), an AWS Labs open source project, tackles that problem with code generators built on top of Nx. Instead of once again writing out boilerplate for every new service or website, you can just run a generator (CLI), answer a few questions, and get production-ready application code plus the CDK or Terraform to deploy it.
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react-starter-kit
Edge-native React template in a monorepo setup: Includes Vite frontend, Hono API, TanStack Router, shared types/utilities, and Terraform infra for scalable web development.
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Bit
AI-powered development workspaces with reusable components, architectural clarity and zero overhead.
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berty
Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network
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SaaSHub
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umbrella
⛱ Broadly scoped ecosystem & mono-repository of 215 TypeScript projects (and ~185 examples) for general purpose, functional, data driven development
Project mention: Thi.ng – open-source building blocks for computational design and art | news.ycombinator.com | 2026-06-07 -
saasfly
Your Next SaaS Template or Boilerplate ! A magic trip start with `bun create saasfly` . The more stars, the more surprises
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changed-files
:octocat: Github action to retrieve all (added, copied, modified, deleted, renamed, type changed, unmerged, unknown) files and directories.
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octo-web
Web & desktop (Electron) client for the OCTO open workplace — one React + TypeScript codebase shipping browser and PC surfaces, with first-class AI agent UX.
Project mention: Multi-Agent Bug Fix Pipeline: Architecture of Role Separation | news.ycombinator.com | 2026-10-11 -
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SaaSHub
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
TypeScript Monorepo discussion
TypeScript Monorepo related posts
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From Monorepo to Turborepo: Managing Multiple Projects
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React Native Architecture: 8 Folder Structures for Scalable Apps
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Environment Variables Don't Have to Suck
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Why Your .env File Is Lying to You
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Secrets at Rest, Schemas at Scale — What's New in CtroEnv v1.1.0
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Monorepo vs Multi-Repo: Why AI Agents Tip the Scale
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Governing npm Dependencies Across a Monorepo
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Oct 2026
Index
What are some of the best open-source Monorepo projects in TypeScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Twenty | 58,139 |
| 2 | Mattermost | 39,306 |
| 3 | lerna | 36,043 |
| 4 | nx | 29,401 |
| 5 | react-starter-kit | 23,689 |
| 6 | Bit | 18,495 |
| 7 | berty | 9,320 |
| 8 | rushstack | 6,499 |
| 9 | ProtonMail Web Client | 5,634 |
| 10 | umbrella | 3,828 |
| 11 | saasfly | 2,892 |
| 12 | ethereumjs-monorepo | 2,759 |
| 13 | changed-files | 2,726 |
| 14 | nextjs-monorepo-example | 1,802 |
| 15 | rnx-kit | 1,738 |
| 16 | ts-monorepo | 1,632 |
| 17 | turborepo-remote-cache | 1,488 |
| 18 | ultra-runner | 1,248 |
| 19 | octo-web | 1,184 |
| 20 | semaphore | 1,091 |
| 21 | genshin-optimizer | 1,033 |
| 22 | expo-monorepo-example | 995 |
| 23 | nx-examples | 966 |
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