Instead of hosting software using a web hosting service or inhouse solution,software as a service doesn't just provide a software solution but it also comes shipped on a server, accessible through the cloud, usually shared with other tenants.

Awesome list of open-source startup alternatives to well-known SaaS products 🚀

• UpdatedDec 26, 2024
• Python

Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.

• UpdatedMar 18, 2025
• C#

A collection of services with great free tiers for developers on a budget. Sponsored by Mockoon, the best mock API tool.https://mockoon.com

• UpdatedOct 28, 2024

Prowler is an Open Cloud Security tool for AWS, Azure, GCP and Kubernetes. It helps for continuos monitoring, security assessments and audits, incident response, compliance, hardening and forensics readiness. Includes CIS, NIST 800, NIST CSF, CISA, FedRAMP, PCI-DSS, GDPR, HIPAA, FFIEC, SOC2, GXP, Well-Architected Security, ENS and more.

• UpdatedMar 17, 2025
• Python

A free, open-source SaaS app starter for React & Node.js with superpowers. Full-featured. Community-driven.

• UpdatedMar 13, 2025
• TypeScript

Wave - The Software as a Service Starter Kit, designed to help you build the SAAS of your dreams 🚀 💰

• UpdatedMar 15, 2025
• CSS

🚀🎉📚 SaaS Boilerplate built with Next.js + Tailwind CSS + Shadcn UI + TypeScript. ⚡️ Full-stack React application with Auth, Multi-tenancy, Roles & Permissions, i18n, Landing Page, DB, Logging, Testing

• UpdatedDec 20, 2024
• TypeScript

No need to know Kubernetes' cloud native application management platform | 不用懂 Kubernetes 的云原生应用管理平台

• UpdatedMar 14, 2025
• Go

An open source engine for your digital products. Sell SaaS and digital products in minutes.

• UpdatedMar 17, 2025
• Python

Build your own SaaS business with SaaS boilerplate. Productive stack: React, Material-UI, Next, MobX, WebSockets, Express, Node, Mongoose, MongoDB. Written with TypeScript.

• UpdatedSep 15, 2024
• TypeScript

🔥 Enterprise SaaS Starter Kit - Kickstart your enterprise app development with the Next.js SaaS boilerplate 🚀

• UpdatedMar 15, 2025
• TypeScript

Automatic multi-tenancy for Laravel. No code changes needed.

• UpdatedMar 13, 2025
• PHP

Run multiple websites using the same Laravel installation while keeping tenant specific data separated for fully independent multi-domain setups, previously github.com/hyn/multi-tenant

• UpdatedMay 11, 2024
• PHP

Beautiful Open-Source Form Builder

• UpdatedMar 17, 2025
• PHP

Silex is an online tool for visually creating static sites with dynamic data. With the free/libre spirit of internet, together.

• UpdatedMar 17, 2025
• JavaScript

SaaS Boilerplate - Open Source and free SaaS stack that lets you build SaaS products faster in React, Django and AWS. Focus on essential business logic instead of coding repeatable features!

• UpdatedMar 9, 2025
• TypeScript

Fullstack TypeScript toolkit that enhances Prisma ORM with flexible Authorization layer for RBAC/ABAC/PBAC/ReBAC, offering auto-generated type-safe APIs and frontend hooks.

• UpdatedMar 18, 2025
• TypeScript

Free online agile retrospective meeting tool

• UpdatedMar 17, 2025
• TypeScript

Cloud Native DataOps & AIOps Platform | 云原生数智运维平台

• UpdatedApr 11, 2024
• Java

Opinionated SaaS quick-start with pre-built user account and organization system for full-stack application development in React, Node.js, GraphQL and PostgreSQL. Powered by PostGraphile, TypeScript, Apollo Client, Graphile Worker, Graphile Migrate, GraphQL Code Generator, Ant Design and Next.js

• UpdatedDec 18, 2024
• TypeScript