Open Source Projects using Vercel Functions
A curated collection of the 29 best open source software using Vercel Functions. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Affiliate marketing platform built for SaaS companies
Stars
24,667Last commit
5 hours agoLicense
AGPL-3.0
Run affiliate, influencer, and referral programs with flexible reward structures, real-time attribution, and automated global payouts.
Open Source Alternative to:
Postgres-powered backend platform for production apps
Stars
108,844Last commit
5 hours agoLicense
Apache-2.0
Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.
Open Source Alternative to:
Manage, build, and run AI agent teams around the clock
Stars
82,240Last commit
6 hours agoLicense
Unknown
A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Open Source Alternative to:
Self-host your own scheduling page, no vendor required
Stars
48,146Last commit
15 hours agoLicense
MIT
Cal.diy is the community edition of Cal.com for personal self-hosting, with calendar sync, video conferencing, payment support, and a REST API.
Open Source Alternative to:
AI-powered code completion for seamless development
Stars
33,859Last commit
2 months agoLicense
Apache-2.0
Self-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.
Open Source Alternative to:
Branded short links with analytics and conversion tracking
Stars
24,667Last commit
5 hours agoLicense
AGPL-3.0
Link management platform for marketing teams with custom domains, UTM builder, A/B testing, geo-targeting, QR codes, and real-time conversion analytics.
Open Source Alternative to:
Streamline your business finances and operations
Stars
14,952Last commit
3 months agoLicense
AGPL-3.0
All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.
Open Source Alternative to:
Privacy-first survey and experience management platform
Stars
12,888Last commit
8 hours agoLicense
AGPL-3.0
Collect feedback across websites, apps, and emails with targeted surveys, user segmentation, and GDPR-compliant data handling. Self-host or use the cloud.
Open Source Alternative to:
Minimalistic AI-powered search engine for instant answers
Stars
11,857Last commit
23 days agoLicense
AGPL-3.0
Scira delivers concise, AI-generated responses to queries using a clean interface and powerful search capabilities.
Open Source Alternative to:
Realtime client-side database for collaborative apps
Stars
10,507Last commit
4 days agoLicense
Apache-2.0
Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.
Open Source Alternative to:
Open-source document sharing with powerful analytics
Stars
9,045Last commit
7 days agoLicense
AGPL-3.0
Secure, customizable platform for sharing documents and tracking engagement. Perfect for sales teams, marketers, and businesses.
Open Source Alternative to:
Flexible, scalable Node.js CMS and app framework
Stars
9,968Last commit
3 days agoLicense
MIT
A powerful, customizable content management system and application framework built on Node.js, GraphQL, and React
Open Source Alternative to:
Real-time observability for modern web applications
Stars
9,372Last commit
15 days agoLicense
Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Open Source Alternative to:
Modular auth, payments, emails, and analytics for your product
Stars
6,847Last commit
6 hours agoLicense
Unknown
Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Open Source Alternative to:
Secure, scalable API key management for developers
Stars
5,429Last commit
6 hours agoLicense
AGPL-3.0
Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.
Open Source Alternative to:
Effortless group scheduling for seamless collaboration
Stars
5,244Last commit
5 hours agoLicense
AGPL-3.0
A user-friendly, open-source tool for coordinating events and meetings without the hassle of back-and-forth emails or messages.
Open Source Alternative to:
Open canvas for designing and building web apps
Stars
2,631Last commit
5 hours agoLicense
Apache-2.0
Design and build web applications on an open canvas with AI-powered tools, Figma integration, pixel drawing, and a modular SDK built for extensibility.
Open Source Alternative to:
Create beautiful images of your code
Stars
2,351Last commit
11 days agoLicense
MIT
Turn your code into beautiful images. Choose from a range of syntax colors, hide or show the background, and toggle between a dark and light window.
Free DNS management and URL shortening platform
Stars
2,280Last commit
3 months agoLicense
MIT
WR.DO offers free domain name distribution and short URL generation, built on Cloudflare's infrastructure for reliability and speed.
Open Source Alternative to:
Automated localization for modern development teams
Stars
2,033Last commit
4 months agoLicense
MIT
A developer-focused localization platform that automates translation workflows within your existing development pipeline and CI/CD processes.
Open Source Alternative to:
A delightfully rich and dynamic link-in-bio.
Stars
794Last commit
1 month agoLicense
MIT
Build a dynamic link-in-bio page with a drag-and-drop editor. Integrate platforms to showcase live content and connect with your audience.
Open Source Alternative to:
Your content engine for growing on Twitter at scale
Stars
764Last commit
9 months agoLicense
AGPL-3.0
Create, schedule & manage Twitter content at scale with AI assistance, beautiful visuals, and multi-account support. Perfect for busy founders.
Open Source Alternative to:
Effortless changelog creation for open-source projects
Stars
284Last commit
15 days agoLicense
AGPL-3.0
Automate and simplify changelog generation from Git commits, ensuring clear and consistent project documentation.
Open Source Alternative to:
Transform idle cash into competitive yield for startups
Stars
249Last commit
5 months agoLicense
MIT
High-yield treasury management for startups earning 8% APY with insurance coverage up to $1M. Open US/EU accounts instantly with full liquidity and no minimums.
Effortless blogging for developers and tech enthusiasts
Stars
253Last commit
4 days agoLicense
AGPL-3.0
A minimalist, markdown-based blogging platform designed for developers, featuring syntax highlighting and seamless Git integration.
Open Source Alternative to:
Launch your personal website in minutes, no coding required
Stars
227Last commit
4 months agoLicense
AGPL-3.0
Free site builder to create a personal website with articles, projects, email capture, and analytics. Open source, fast, and beautifully designed.
Open Source Alternative to:
Transform long URLs into beautiful, trackable short links
Stars
91Last commit
16 hours agoLicense
MIT
Open-source URL shortener with analytics, custom domains, QR codes, and link-in-bio pages. Create branded short links with detailed tracking insights.
Open Source Alternative to:
LLM observability: cost, latency, and traces in one place
Stars
13Last commit
5 days agoLicense
MIT
Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.
Open Source Alternative to:
Secure AI API management for iOS apps with DeviceCheck
Stars
8Last commit
8 months agoLicense
AGPL-3.0
A secure proxy service that protects AI API keys using Apple DeviceCheck, enabling safe integration of ChatGPT, Claude, and other AI models in iOS apps
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