Best open-source SaaS boilerplates and starters

24 picks from the library

1. 01

   Activepieces

   No-code automation builder with a visual flow canvas, 200+ connectors and an AI-first agent layer.

   Why it made the list: MIT-licensed Zapier alternative, so you can actually commercialise a fork

   Open-source product to forkMITActivepieces (@activepieces)activepieces.com

   
2. 02

   AI SDK Preview RAG

   Compact RAG demo showing streaming retrieval, source citation and generative UI with the AI SDK.

   Why it made the list: Small enough to read in an hour and lift the retrieval patterns wholesale

   AI app starterMITVercel Labs (@vercel-labs)github.com

   
3. 03

   AI SDK RAG Starter

   Vercel's step-by-step RAG chatbot starter with embeddings, pgvector storage and tool-based retrieval over your own data.

   Why it made the list: The canonical minimal RAG scaffold; strip it down instead of over-engineering LangChain

   AI app starterMITVercel (@vercel)github.com

   
4. 04

   Aptabase

   Privacy-friendly analytics for mobile and desktop apps with SDKs for Swift, Kotlin, Flutter, Electron and Tauri.

   Why it made the list: App analytics rather than web; a much less crowded niche to build in

   Open-source product to forkGPLGuilherme Oenning (@goenning)aptabase.com

   
5. 05

   Async Labs SaaS

   Battle-tested TypeScript SaaS app with teams, real-time chat, Stripe billing and MongoDB, extracted from a shipped product.

   Why it made the list: Extracted from a real production app rather than written as a demo

   Open-source SaaS boilerplateMITAsync Labs (@async-labs)github.com

   
6. 06

   Bedrock

   Fullstack starter by Max Stoiber pairing Next.js, GraphQL, Prisma, Stripe, magic-link auth and a documented architecture.

   Why it made the list: Design and architecture decisions documented publicly; good reading even without buying

   Open-source SaaS boilerplatepaidMax Stoiber (@mxstbr)bedrock.mxstbr.com

   
7. 07

   BoxyHQ SaaS Starter Kit

   Enterprise-flavoured Next.js starter shipping SAML SSO, directory sync, audit logs, webhooks and multi-tenant teams out of the box.

   Why it made the list: SSO and audit logging pre-built is the exact thing that unblocks enterprise deals

   Open-source SaaS boilerplateopen-sourceBoxyHQ (@boxyhq)github.com

   
8. 08

   Cap

   Loom alternative for screen recording and sharing, with a native desktop app and instant shareable links.

   Why it made the list: Desktop-plus-web open product with genuine interface craft; rare combination

   Open-source product to forkGPLCap (@CapSoftware)cap.so

   
9. 09

   ChatHN

   Chatbot that queries the Hacker News API through OpenAI function calling, with streaming generative UI.

   Why it made the list: Cleanest tiny example of tool calling driving real UI components

   AI app starterMITSteven Tey (@steventey)vercel.com

   
10. 10

    ClassroomIO

    No-code platform for building and running teaching platforms with courses, cohorts, assignments and video lessons.

    Why it made the list: Course-platform SaaS is a common client ask; this covers most of it already

    Open-source product to forkGPLClassroomIO (@classroomio)classroomio.com

    
11. 11

    Cloudflare SaaS Stack

    Full-stack starter deploying to Cloudflare Workers with D1, R2, Drizzle and auth, so hosting cost stays near zero.

    Why it made the list: Edge-native SaaS on a free tier; almost every other boilerplate assumes Vercel plus a DB bill

    Open-source SaaS boilerplateMITDhravya Shah (@Dhravya)github.com

    
12. 12

    CMSaasStarter

    SvelteKit SaaS template with Supabase auth, Stripe subscriptions, marketing site, blog, settings and pricing pages already wired.

    Why it made the list: The best-maintained SvelteKit SaaS base; Svelte devs are badly underserved here

    Open-source SaaS boilerplateMITCritical Moments (@CriticalMoments)github.com

    
13. 13

    create-t3-turbo

    Turborepo template sharing tRPC, Drizzle and Tailwind code between a Next.js web app and an Expo mobile app.

    Why it made the list: Web and native sharing one typed API layer is still surprisingly hard to set up

    Open-source SaaS boilerplateMITJulius Marminge (@juliusmarminge) / T3 OSSgithub.com

    
14. 14

    Django Rocket

    CLI that scaffolds a Django SaaS with auth, billing, Tailwind and deployment config in one command.

    Why it made the list: Free Django SaaS scaffold in a market where SaaS Pegasus costs hundreds

    Open-source SaaS boilerplateMITErnesto González (@ernestofgonzalez)github.com

    
15. 15

    Documenso

    Open DocuSign alternative for legally binding e-signatures with templates, teams, audit trail and self-hosting.

    Why it made the list: Signing infrastructure is brutal to build; forking this skips a year of work

    Open-source product to forkGPLDocumenso (@documenso)documenso.com

    
16. 16

    Dub

    Link management and attribution platform with short links, conversion tracking, affiliate programs and analytics.

    Why it made the list: Reference-quality Next.js codebase; people fork it for the architecture, not the links

    Open-source product to forkGPLSteven Tey (@steventey)dub.co

    
17. 17

    Empathic Voice Interface Starter

    Next.js starter for realtime voice chat with emotional expression measurement using Hume's EVI API.

    Why it made the list: Voice UI starter with expression data; a differentiated demo most teams cannot build fast

    AI app starterMITHume AI (@HumeAI)vercel.com

    
18. 18

    Enferno

    Flask framework preconfigured with auth, roles, Vue, Celery tasks and Docker for rapid Python app delivery.

    Why it made the list: Mature Flask starter that has quietly been maintained for close to a decade

    Open-source SaaS boilerplateMITNidal Alhariri (@level09)github.com

    
19. 19

    Extro

    Browser extension starter kit with React, Tailwind, typed messaging, i18n, billing and cross-browser build tooling.

    Why it made the list: Extension boilerplates with billing built in basically do not exist elsewhere

    Open-source SaaS boilerplateopen-sourceTurboStarter (@turbostarter)github.com

    
20. 20

    Formbricks

    Survey and experience-management platform with in-product micro-surveys, targeting, link surveys and a visual editor.

    Why it made the list: Typeform-grade UX plus in-app targeting, which the commercial tools charge heavily for

    Open-source product to forkGPLFormbricks (@formbricks)formbricks.com

    
21. 21

    Ghostfolio

    Privacy-first wealth management dashboard tracking portfolios, dividends and asset allocation across accounts.

    Why it made the list: Fintech dashboard with real charting and data modelling already done

    Open-source product to forkGPLThomas Kaul (@dtslvr)ghostfol.io

    
22. 22

    Graphile Starter

    Opinionated PostgreSQL-first fullstack starter with PostGraphile, row-level security, email flows, sessions and a hardened auth model.

    Why it made the list: Its Postgres RLS auth design is a masterclass worth stealing even if you fork nothing

    Open-source SaaS boilerplateopen-sourceBenjie Gillam (@benjie)github.com

    
23. 23

    Hanko

    Passkey-first authentication and user management with hosted or self-hosted flows and embeddable web components.

    Why it made the list: Passkey UX done properly as drop-in components; a differentiator for client work

    Open-source product to forkGPLHanko (@teamhanko)hanko.io

    
24. 24

    Hikari

    Next.js SaaS template pairing Supabase and Stripe with a landing page, blog and dashboard in one repo.

    Why it made the list: Marketing site, blog and app in one codebase; rare in free Supabase starters

    Open-source SaaS boilerplateMITAntoine Ross (@antoineross)github.com

    

Questions

Is a boilerplate worth it if I use an AI coding agent?

Often more so. An agent works far better inside an existing, coherent structure than on an empty folder.

What should I check before forking?

The licence, the last commit date, the test coverage on billing, and how tightly it couples to one hosting provider.