Open Source Projects using Cloudflare Workers

A curated collection of the 39 best open source software using Cloudflare Workers. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Novu

The open source Inbox component and notification platform

Stars
38,833
Forks
4,253
Last commit
29 minutes ago

A powerful, open-source notification infrastructure for developers to manage and send multi-channel notifications with ease.

Open Source Alternative to:

Customer.io

screenpipe

24/7 AI screen memory that remembers everything

Stars
18,232
Forks
1,624
Last commit
5 hours ago

Open source AI-powered screen recorder that captures screen and audio 24/7. Search your digital history with natural language, get AI assistance, and automate workflows. 100% local and private.

Open Source Alternative to:

Rewind.ai

Cap

Open source screen recording with instant sharing

Stars
18,174
Forks
1,406
Last commit
2 days ago

Cross-platform screen recording tool with instant sharing, local editing, AI features, and custom S3 storage. Open source alternative to Loom.

Open Source Alternative to:

Screen Studio

OpenCode

AI coding agent with native terminal interface

Stars
144,613
Forks
16,363
Last commit
29 minutes ago

Native terminal UI AI coding agent with LSP support, multi-session capability, shareable links, and compatibility with 75+ LLM providers including Claude Pro.

Open Source Alternative to:

Claude Code

Supabase

Open-source Firebase alternative for modern app development

Stars
100,981
Forks
12,099
Last commit
30 minutes ago

A powerful, scalable backend platform offering real-time databases, authentication, storage, and serverless functions for rapid development.

Open Source Alternative to:

Firebase

LobeChat

Your personal AI assistant for enhanced productivity

Stars
75,291
Forks
14,933
Last commit
31 minutes ago

LobeChat is an open-source AI chat platform that provides a customizable and feature-rich experience for interacting with AI assistants.

Open Source Alternative to:

Grok

Zed

Code at the speed of thought with AI collaboration

Stars
79,261
Forks
7,872
Last commit
2 hours ago

High-performance code editor built in Rust with native AI integration, real-time collaboration, and lightning-fast performance across multiple platforms.

Open Source Alternative to:

Cursor

OBS Studio

Free, open-source software for video recording and live streaming

Stars
71,718
Forks
9,159
Last commit
5 hours ago

OBS Studio offers high-quality video recording and live streaming capabilities, supporting multiple platforms and providers.

Open Source Alternative to:

Screen Studio

LiteLLM

Unified gateway for 100+ LLMs with spend tracking

Stars
43,611
Forks
7,301
Last commit
29 minutes ago

Manage authentication, load balancing, and cost tracking across 100+ LLMs through a single OpenAI-compatible gateway. Trusted by Netflix and enterprise teams.

Open Source Alternative to:

LangChain

Tldraw

Free instant collaborative whiteboarding for all devices

Stars
46,386
Forks
3,146
Last commit
1 hour ago

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Open Source Alternative to:

Miro

Better Auth

Framework-agnostic authentication for TypeScript applications

Stars
27,850
Forks
2,467
Last commit
2 hours ago

A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.

Open Source Alternative to:

Clerk

Bolt.new

Prompt, run, edit & deploy web apps instantly

Stars
16,320
Forks
14,609
Last commit
1 year ago

bolt.new is a platform that enables developers to quickly create, modify, and deploy full-stack web applications using various popular frameworks and technologies.

Open Source Alternative to:

Lovable

Ente

Secure, private photo storage and sharing solution

Stars
26,012
Forks
1,544
Last commit
33 minutes ago

End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.

Open Source Alternative to:

Google Drive

Huly

Unified workspace for seamless team collaboration

Stars
25,375
Forks
1,828
Last commit
2 hours ago

An open-source platform that combines project management, team communication, document collaboration, and virtual office spaces in one integrated solution.

Open Source Alternative to:

Notion

Supermemory

Lightning-fast memory API for AI applications

Stars
21,885
Forks
2,006
Last commit
4 hours ago

Add persistent memory to LLM apps with millisecond recall times. Store, retrieve, and personalize user data across sessions with enterprise-grade security.

Open Source Alternative to:

LangChain

Midday

Streamline your business finances and operations

Stars
14,159
Forks
1,382
Last commit
2 days ago

All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.

Open Source Alternative to:

YNAB

Scalar

Open-source API documentation and testing platform

Stars
14,701
Forks
810
Last commit
1 hour ago

Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

Open Source Alternative to:

Mintlify

Trigger

Streamline your backend jobs with ease and efficiency

Stars
14,571
Forks
1,163
Last commit
2 hours ago

A developer-friendly platform for building, scheduling, and managing background jobs in your applications with minimal setup.

Open Source Alternative to:

Make

Notesnook

Secure, private note-taking for the digital age

Stars
13,944
Forks
939
Last commit
1 hour ago

End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

Open Source Alternative to:

Notion

Portkey AI Gateway

Complete production stack for AI teams

Stars
11,344
Forks
994
Last commit
23 days ago

Comprehensive AI platform with gateway, observability, guardrails, and prompt management. Access 1,600+ LLMs via unified API with enterprise-grade security.

Open Source Alternative to:

Eden AI

Zero

Privacy-first email client with AI-powered organization

Stars
10,523
Forks
1,291
Last commit
7 months ago

An open source email application that combines AI capabilities with robust privacy features to help manage and organize your inbox efficiently.

Open Source Alternative to:

Gmail

Sink

Simple, speedy, and secure link shortener with analytics

Stars
6,530
Forks
4,459
Last commit
5 days ago

A serverless link shortener that runs entirely on Cloudflare, offering URL compression, analytics, and customizable slugs.

Open Source Alternative to:

Bitly

WebStudio

Visual web development with code-level control

Stars
8,436
Forks
1,508
Last commit
1 day ago

Powerful no-code platform for building responsive websites. Combines visual editing with full HTML/CSS customization.

Open Source Alternative to:

Webflow

UnKey

Secure, scalable API key management for developers

Stars
5,242
Forks
613
Last commit
4 hours ago

Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.

Open Source Alternative to:

Apigee

Helicone

Build reliable AI apps with comprehensive observability

Stars
5,498
Forks
510
Last commit
6 days ago

Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

Open Source Alternative to:

DataDog

Bknd

Feature-rich backend that runs anywhere you need it

Stars
3,717
Forks
144
Last commit
11 days ago

Lightweight Firebase alternative with database, auth, storage, and workflows. Framework-agnostic backend that integrates with NextJS, Remix, Hono and more.

Open Source Alternative to:

Supabase

c15t

Build privacy-compliant cookie banners with full control

Stars
1,668
Forks
128
Last commit
15 hours ago

Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in.

Open Source Alternative to:

Termly

ClassroomIO

Build your custom learning academy in minutes

Stars
1,503
Forks
307
Last commit
5 days ago

Open source LMS designed for companies and training organizations. Create, manage, and deliver courses with AI support, customizable dashboards, and collaborative features.

Open Source Alternative to:

Udemy

Chalk.ist

Transform your source code into stunning visuals

Stars
1,827
Forks
150
Last commit
3 months ago

Create beautiful, customizable images of your source code with ease, perfect for presentations, documentation, and social media sharing.

Tailcall

The modern GraphQL runtime

Stars
1,431
Forks
257
Last commit
14 hours ago

Swiftly design and ship best-practice GraphQL backends atop existing data sources and APIs.

Open Source Alternative to:

Apollo GraphQL

Amical

Type 10x faster with AI-powered voice dictation

Stars
1,141
Forks
95
Last commit
22 hours ago

Open source AI dictation app that transforms speech to text with context-aware formatting. Fast, accurate transcription for meetings, notes, and hands-free typing.

Open Source Alternative to:

Wispr Flow

Hive

Open-source GraphQL federation platform

Stars
479
Forks
133
Last commit
5 hours ago

A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs

Open Source Alternative to:

Apollo GraphQL

Streamdal

Code-native data privacy for real-time applications

Stars
615
Forks
16
Last commit
2 months ago

Embed privacy controls in your code to detect and protect PII, preventing unintended data exposure and building trust through secure data handling.

Nordcraft

Craft AAA web apps that delight your users

Stars
383
Forks
35
Last commit
2 days ago

Visual web development engine combining design and development tools. Build immersive, interactive web experiences with component-based framework, real-time collaboration, and powerful visual editor.

Open Source Alternative to:

Webflow

Marble CMS

Simple content management for modern sites

Stars
360
Forks
55
Last commit
16 hours ago

A headless CMS designed for blogs, changelogs, and articles. Features intuitive editor, team collaboration, media management, and API integration.

Open Source Alternative to:

WordPress

Capgo

Real-time app updates without App Store submissions

Stars
187
Forks
82
Last commit
11 hours ago

Over-the-air update solution for Capacitor apps that enables instant deployment of bug fixes and features without going through app store review processes.

Open Source Alternative to:

Appflow

Abby

Type-safe feature flags and remote config for developers

Stars
165
Forks
21
Last commit
9 months ago

Abby offers open-source, fully typed feature flagging and remote configuration for React and Next.js, with multi-environment testing and debugging tools.

Open Source Alternative to:

LaunchDarkly

Formizee

Create and manage forms with ease

Stars
179
Forks
16
Last commit
9 months ago

Formizee is an open-source platform for designing, building, and analyzing forms, offering an affordable all-in-one solution

Open Source Alternative to:

Google Forms

Cloudmark

Organize and access your bookmarks seamlessly in the cloud

Stars
71
Forks
7
Last commit
9 months ago

Cloud-based bookmark manager that lets you save, categorize, and access your web favorites from any device with smart organization features

Open Source Alternative to:

Pocket

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

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Novu

The open source Inbox component and notification platform

Stars
38,833
Forks
4,253
Last commit
29 minutes ago

A powerful, open-source notification infrastructure for developers to manage and send multi-channel notifications with ease.

Open Source Alternative to:

Customer.io

screenpipe

24/7 AI screen memory that remembers everything

Stars
18,232
Forks
1,624
Last commit
5 hours ago

Open source AI-powered screen recorder that captures screen and audio 24/7. Search your digital history with natural language, get AI assistance, and automate workflows. 100% local and private.

Open Source Alternative to:

Rewind.ai

Cap

Open source screen recording with instant sharing

Stars
18,174
Forks
1,406
Last commit
2 days ago

Cross-platform screen recording tool with instant sharing, local editing, AI features, and custom S3 storage. Open source alternative to Loom.

Open Source Alternative to:

Screen Studio

OpenCode

AI coding agent with native terminal interface

Stars
144,613
Forks
16,363
Last commit
29 minutes ago

Native terminal UI AI coding agent with LSP support, multi-session capability, shareable links, and compatibility with 75+ LLM providers including Claude Pro.

Open Source Alternative to:

Claude Code

Supabase

Open-source Firebase alternative for modern app development

Stars
100,981
Forks
12,099
Last commit
30 minutes ago

A powerful, scalable backend platform offering real-time databases, authentication, storage, and serverless functions for rapid development.

Open Source Alternative to:

Firebase

LobeChat

Your personal AI assistant for enhanced productivity

Stars
75,291
Forks
14,933
Last commit
31 minutes ago

LobeChat is an open-source AI chat platform that provides a customizable and feature-rich experience for interacting with AI assistants.

Open Source Alternative to:

Grok

Zed

Code at the speed of thought with AI collaboration

Stars
79,261
Forks
7,872
Last commit
2 hours ago

High-performance code editor built in Rust with native AI integration, real-time collaboration, and lightning-fast performance across multiple platforms.

Open Source Alternative to:

Cursor

OBS Studio

Free, open-source software for video recording and live streaming

Stars
71,718
Forks
9,159
Last commit
5 hours ago

OBS Studio offers high-quality video recording and live streaming capabilities, supporting multiple platforms and providers.

Open Source Alternative to:

Screen Studio

LiteLLM

Unified gateway for 100+ LLMs with spend tracking

Stars
43,611
Forks
7,301
Last commit
29 minutes ago

Manage authentication, load balancing, and cost tracking across 100+ LLMs through a single OpenAI-compatible gateway. Trusted by Netflix and enterprise teams.

Open Source Alternative to:

LangChain

Tldraw

Free instant collaborative whiteboarding for all devices

Stars
46,386
Forks
3,146
Last commit
1 hour ago

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Open Source Alternative to:

Miro

Better Auth

Framework-agnostic authentication for TypeScript applications

Stars
27,850
Forks
2,467
Last commit
2 hours ago

A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.

Open Source Alternative to:

Clerk

Bolt.new

Prompt, run, edit & deploy web apps instantly

Stars
16,320
Forks
14,609
Last commit
1 year ago

bolt.new is a platform that enables developers to quickly create, modify, and deploy full-stack web applications using various popular frameworks and technologies.

Open Source Alternative to:

Lovable

Ente

Secure, private photo storage and sharing solution

Stars
26,012
Forks
1,544
Last commit
33 minutes ago

End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.

Open Source Alternative to:

Google Drive

Huly

Unified workspace for seamless team collaboration

Stars
25,375
Forks
1,828
Last commit
2 hours ago

An open-source platform that combines project management, team communication, document collaboration, and virtual office spaces in one integrated solution.

Open Source Alternative to:

Notion

Supermemory

Lightning-fast memory API for AI applications

Stars
21,885
Forks
2,006
Last commit
4 hours ago

Add persistent memory to LLM apps with millisecond recall times. Store, retrieve, and personalize user data across sessions with enterprise-grade security.

Open Source Alternative to:

LangChain

Midday

Streamline your business finances and operations

Stars
14,159
Forks
1,382
Last commit
2 days ago

All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.

Open Source Alternative to:

YNAB

Scalar

Open-source API documentation and testing platform

Stars
14,701
Forks
810
Last commit
1 hour ago

Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

Open Source Alternative to:

Mintlify

Trigger

Streamline your backend jobs with ease and efficiency

Stars
14,571
Forks
1,163
Last commit
2 hours ago

A developer-friendly platform for building, scheduling, and managing background jobs in your applications with minimal setup.

Open Source Alternative to:

Make

Notesnook

Secure, private note-taking for the digital age

Stars
13,944
Forks
939
Last commit
1 hour ago

End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

Open Source Alternative to:

Notion

Portkey AI Gateway

Complete production stack for AI teams

Stars
11,344
Forks
994
Last commit
23 days ago

Comprehensive AI platform with gateway, observability, guardrails, and prompt management. Access 1,600+ LLMs via unified API with enterprise-grade security.

Open Source Alternative to:

Eden AI

Zero

Privacy-first email client with AI-powered organization

Stars
10,523
Forks
1,291
Last commit
7 months ago

An open source email application that combines AI capabilities with robust privacy features to help manage and organize your inbox efficiently.

Open Source Alternative to:

Gmail

Sink

Simple, speedy, and secure link shortener with analytics

Stars
6,530
Forks
4,459
Last commit
5 days ago

A serverless link shortener that runs entirely on Cloudflare, offering URL compression, analytics, and customizable slugs.

Open Source Alternative to:

Bitly

WebStudio

Visual web development with code-level control

Stars
8,436
Forks
1,508
Last commit
1 day ago

Powerful no-code platform for building responsive websites. Combines visual editing with full HTML/CSS customization.

Open Source Alternative to:

Webflow

UnKey

Secure, scalable API key management for developers

Stars
5,242
Forks
613
Last commit
4 hours ago

Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.

Open Source Alternative to:

Apigee

Helicone

Build reliable AI apps with comprehensive observability

Stars
5,498
Forks
510
Last commit
6 days ago

Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

Open Source Alternative to:

DataDog

Bknd

Feature-rich backend that runs anywhere you need it

Stars
3,717
Forks
144
Last commit
11 days ago

Lightweight Firebase alternative with database, auth, storage, and workflows. Framework-agnostic backend that integrates with NextJS, Remix, Hono and more.

Open Source Alternative to:

Supabase

c15t

Build privacy-compliant cookie banners with full control

Stars
1,668
Forks
128
Last commit
15 hours ago

Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in.

Open Source Alternative to:

Termly

ClassroomIO

Build your custom learning academy in minutes

Stars
1,503
Forks
307
Last commit
5 days ago

Open source LMS designed for companies and training organizations. Create, manage, and deliver courses with AI support, customizable dashboards, and collaborative features.

Open Source Alternative to:

Udemy

Chalk.ist

Transform your source code into stunning visuals

Stars
1,827
Forks
150
Last commit
3 months ago

Create beautiful, customizable images of your source code with ease, perfect for presentations, documentation, and social media sharing.

Tailcall

The modern GraphQL runtime

Stars
1,431
Forks
257
Last commit
14 hours ago

Swiftly design and ship best-practice GraphQL backends atop existing data sources and APIs.

Open Source Alternative to:

Apollo GraphQL

Amical

Type 10x faster with AI-powered voice dictation

Stars
1,141
Forks
95
Last commit
22 hours ago

Open source AI dictation app that transforms speech to text with context-aware formatting. Fast, accurate transcription for meetings, notes, and hands-free typing.

Open Source Alternative to:

Wispr Flow

Hive

Open-source GraphQL federation platform

Stars
479
Forks
133
Last commit
5 hours ago

A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs

Open Source Alternative to:

Apollo GraphQL

Streamdal

Code-native data privacy for real-time applications

Stars
615
Forks
16
Last commit
2 months ago

Embed privacy controls in your code to detect and protect PII, preventing unintended data exposure and building trust through secure data handling.

Nordcraft

Craft AAA web apps that delight your users

Stars
383
Forks
35
Last commit
2 days ago

Visual web development engine combining design and development tools. Build immersive, interactive web experiences with component-based framework, real-time collaboration, and powerful visual editor.

Open Source Alternative to:

Webflow

Marble CMS

Simple content management for modern sites

Stars
360
Forks
55
Last commit
16 hours ago

A headless CMS designed for blogs, changelogs, and articles. Features intuitive editor, team collaboration, media management, and API integration.

Open Source Alternative to:

WordPress

Capgo

Real-time app updates without App Store submissions

Stars
187
Forks
82
Last commit
11 hours ago

Over-the-air update solution for Capacitor apps that enables instant deployment of bug fixes and features without going through app store review processes.

Open Source Alternative to:

Appflow

Abby

Type-safe feature flags and remote config for developers

Stars
165
Forks
21
Last commit
9 months ago

Abby offers open-source, fully typed feature flagging and remote configuration for React and Next.js, with multi-environment testing and debugging tools.

Open Source Alternative to:

LaunchDarkly

Formizee

Create and manage forms with ease

Stars
179
Forks
16
Last commit
9 months ago

Formizee is an open-source platform for designing, building, and analyzing forms, offering an affordable all-in-one solution

Open Source Alternative to:

Google Forms

Cloudmark

Organize and access your bookmarks seamlessly in the cloud

Stars
71
Forks
7
Last commit
9 months ago

Cloud-based bookmark manager that lets you save, categorize, and access your web favorites from any device with smart organization features

Open Source Alternative to:

Pocket