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A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monitoring— MCP included! all for free or enjoy our SaaS plan!

The most complete open-source, self-hosted Agentic Trading OS—AI research, Python strategies, factor discovery, backtesting, optimization, paper/live multi-asset execution, risk controls, monitoring, MCP, and multi-tenant SaaS in one auditable stack.

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

🔥 官方推荐 🔥 RuoYi-Vue 全新 Pro 版本，优化重构所有功能。基于 Spring Boot + MyBatis Plus + Vue & Element 实现的后台管理系统 + 微信小程序，支持 RBAC 动态权限、数据权限、SaaS 多租户、Flowable 工作流、三方登录、支付、短信、商城、CRM、ERP、MES、IM、AI 大模型、IoT 物联网等功能。你的 ⭐️ Star ⭐️，是作者生发的动力！

一句话让 AI 帮你做产品宣传片！把产品名或网址告诉 Cursor、Claude Code、Codex 等 AI 编程工具，它会自己调研产品、画出多种风格样图让你挑选、截取 4K 真实页面、按音乐节拍卡点剪辑、生成 AI 旁白并逐句转写校验、自动审图，最后交付一支 4K 商业宣传视频和可在线播放的网页版。App、网站、SaaS、开源项目、课程、AI 模型都能做，你只需确认需求、试听配乐。不用学剪辑软件，也不用花钱找外包。基于 Remotion + ElevenLabs，可直接克隆使用，也能一键安装为 Agent Skill。

Open Brain — The infrastructure layer for your thinking. One database, one AI gateway, one chat channel — any AI plugs in. No middleware, no SaaS.

Chakra UI is a component system for building SaaS products with speed ⚡️

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

芋道管理后台，基于 Vue3 + Element Plus 实现，支持 RBAC 动态权限、数据权限、SaaS 多租户、Flowable 工作流、三方登录、支付、短信、商城、CRM、ERP、MES、IM、AI 大模型、IoT 物联网等功能。

CSGHub is a brand-new open-source platform for managing LLMs, developed by the OpenCSG team. It offers both open-source and on-premise/SaaS solutions, with features comparable to Hugging Face. Gain full control over the lifecycle of LLMs, datasets, and agents, with Python SDK compatibility with Hugging Face. Join us! ⭐️

Hand your SaaS growth chores to an agent: new-term radar, keyword-to-site discovery, competitor backlinks, directory submissions, plus a social analysis pack with a Douyin comments skill. Works with Grok Bot, Muse, Dot, Hermes, OpenClaw, Claude Code and Codex.

Kimai is the #1 open-source time-tracking application. From freelancers to companies and organisations - everyone can manage timesheets, generate reports, create invoices and so much more... Web-based multi-user application, available as On-Premise or SaaS version: https://www.kimai.org

The application framework for vertical AI SaaS — auth, workspaces, billing, credits, execution boundary, page registry. You build the agent.

Kubernetes Operator for delivering SaaS-style, namespace-isolated application instances on Kubernetes

java免费MIT开源商城，小程序、公众号管理，采用Java+spring boot4+vue3+element-plus开发；uniapp多端覆盖、微信支付宝、多页面拖拽装修、多语言，S2B2C，B2B2C，SaaS，B2C多模式，小程序/H5/APP/PC商城多端口，砍价/积分/拼团/秒杀/分销/用户等级/付费会员等营销功能

🔥 The fastest and powerful Python library for Instagram Private API 2026 with HikerAPI SaaS

Data pipelines for cloud config and security data. Build cloud asset inventory, CSPM, FinOps, and vulnerability management solutions. Extract from AWS, Azure, GCP, and 70+ cloud and SaaS sources.

Condo is an Open Source property management SaaS that allows users to manage tickets, resident contacts, properties, payment tracking, create invoices, and oversee a service marketplace, all while offering an extension system for mini-apps, making it an ideal platform for property management companies and those servicing shared properties.

Query, provision and operate Cloud, SaaS, API and Model Context Protocol (MCP) resources through a unified SQL-based framework for humans and AI agents.

SadServers: Linux & DevOps Troubleshooting Scenarios SaaS

Awesome apps, software, and SaaS deals on Black Friday.

🛠 Open-source, self-hosted WebRTC SaaS platform and video meeting scheduler. Provide user accounts, dashboards, meeting scheduling, invitations, and centralized access to MiroTalk services. Build your own branded video meeting platform on infrastructure you control.

SOFTWARE DEVELOPMENT, SAAS PRODUCTS, AND ONLINE TECHNOLOGY SERVICES.

Bigspring is a highly customizable Astro theme designed specifically for SaaS & marketing websites.

Awesome Free / Open Source Alternatives (to common SaaS products) for Business Use

极简多租户管理系统是一个多租户管理系统，多租户功能同时支持字段隔离和数据源隔离，项目基于SpringBoot3+Vue3的前后端分离的后台开发脚手架，具备一些常用的基础功能。

A 100% free modern JS SaaS boilerplate (React, NodeJS, Prisma). Full-featured: Auth (email, google, github, slack, MS), Email sending, Background jobs, Landing page, Payments (Stripe, Polar.sh), Shadcn UI, S3 file upload. AI-ready with tailored AGENTS.md, skills, and Claude Code plugin. One cmd deploy. Powered by Wasp full-stack framework.

🔥 官方推荐 🔥 RuoYi-Vue 全新 Pro 版本，优化重构所有功能。基于 Spring Boot + MyBatis Plus + Vue & Element 实现的后台管理系统 + 微信小程序，支持 RBAC 动态权限、数据权限、SaaS 多租户、Flowable 工作流、三方登录、支付、短信、商城、CRM、ERP、MES、IM、AI 大模型、IoT 物联网等功能。你的 ⭐️ Star ⭐️，是作者生发的动力！

Lingarr is an application that supports both local and SaaS translation services to translate subtitle files into a specified target language. With automated translation options, Lingarr simplifies translating subtitles.