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Top 23 web-development Open-Source Projects
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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A deeply-synthesized, opinionated reference distilled from five canonical sources: donnemartin/system-design-primer · ByteByteGoHq/system-design-101 · karanpratapsingh/system-design · ashishps1/awesome-system-design-resources · binhnguyennus/awesome-scalability
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front-end-interview-handbook
Front End interview preparation materials for busy engineers (updated for 2026)
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Rocket Official Documentation
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responsively-app
A modified web browser that helps in responsive web development. A web developer's must have dev-tool.
Project mention: Improving Responsively App Documentation – Week 2 of Hacktoberfest | dev.to | 2025-10-19For my second Hacktoberfest contribution, I worked on improving the documentation for Responsively App, an open-source desktop browser that helps developers preview responsive websites in real time. The README was missing some setup instructions and quick-start steps, so I decided to make it easier for new users and contributors.
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Front-End-Performance-Checklist
🎮 The only Front-End Performance Checklist that runs faster than the others
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content
The official source for MDN Web Docs content. Home to over 14,000 pages of documentation about HTML, CSS, JS, HTTP, Web APIs, and more.
Project mention: How to Use Pre-Signed S3 URLs for Direct Browser-to-Storage Uploads | dev.to | 2026-06-04The MDN documentation on the Fetch API covers progress events and abort signals, which are useful for showing upload progress and supporting cancellation.
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top-javascript-interview-questions
Top JavaScript interview questions and answers for Front End Engineers in 2026
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HTTP Prompt
An interactive command-line HTTP and API testing client built on top of HTTPie featuring autocomplete, syntax highlighting, and more. https://twitter.com/httpie
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webstudio
Open source website builder and Webflow alternative. Webstudio is an advanced visual builder that connects to any headless CMS, supports all CSS properties, and can be hosted anywhere, including with us.
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whitestorm.js
:rocket: 🌪 Super-fast 3D framework for Web Applications 🥇 & Games 🎮. Based on Three.js
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Project mention: Introducing Saturon: A Grammar-Aware Runtime for CSS Color Level 5 | dev.to | 2025-11-11
Saturon passes the full Web Platform Tests for CSS Color validation, with only a few exceptions (sign() with font-relative units).
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Front-End-Design-Checklist
💎 The Design Checklist for Creative Web Designers and Patient Front-End Developers
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Project mention: Supabase Scheduled Functions Monitoring: How to Catch Missed Runs Before They Break Production | dev.to | 2026-05-07
// supabase/functions/cleanup-expired-records/index.ts import { serve } from "https://deno.land/std@0.224.0/http/server.ts"; import { createClient } from "https://esm.sh/@supabase/supabase-js@2"; serve(async () => { const supabaseUrl = Deno.env.get("SUPABASE_URL"); const serviceRoleKey = Deno.env.get("SUPABASE_SERVICE_ROLE_KEY"); const heartbeatUrl = Deno.env.get("CLEANUP_HEARTBEAT_URL"); if (!supabaseUrl || !serviceRoleKey) { return new Response("Missing Supabase configuration", { status: 500 }); } const supabase = createClient(supabaseUrl, serviceRoleKey); const { error } = await supabase .from("temporary_records") .delete() .lt("expires_at", new Date().toISOString()); if (error) { console.error("Cleanup failed:", error); return new Response("Cleanup failed", { status: 500 }); } if (heartbeatUrl) { const ping = await fetch(heartbeatUrl); if (!ping.ok) { console.error("Heartbeat ping failed:", ping.status); return new Response("Heartbeat failed", { status: 500 }); } } return new Response("Cleanup completed", { status: 200 }); });
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Kore
An easy to use, scalable and secure web application framework for writing web APIs in C or Python. || This is a read-only mirror, please see https://kore.io/mail and https://kore.io/source for information on how to contribute via the mailing lists.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
web-development discussion
web-development related posts
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Why I Built a Language Instead of a Framework
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Supabase Scheduled Functions Monitoring: How to Catch Missed Runs Before They Break Production
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Supabase Edge Functions Advanced — Streaming, WebSockets, and Background Jobs
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Indie Dev SaaS Launch — Pricing Strategy, Stripe Integration, and Freemium-to-Paid Design
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Indie App Onboarding That Retains Users — Day 0 to Day 28 Engagement Design
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Supabase Edge Functions with Deno: Production-Ready Design Patterns
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Supabase Edge Functions in Deno: A Production Guide
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Jun 2026
Index
What are some of the best open-source web-development projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | cs-video-courses | 81,704 |
| 2 | Front-End-Checklist | 72,833 |
| 3 | awesome-scalability | 71,472 |
| 4 | front-end-interview-handbook | 43,966 |
| 5 | HEAD | 30,272 |
| 6 | Rocket | 25,744 |
| 7 | responsively-app | 24,969 |
| 8 | actix-web | 24,669 |
| 9 | Front-End-Performance-Checklist | 17,241 |
| 10 | content | 10,792 |
| 11 | top-javascript-interview-questions | 9,584 |
| 12 | HTTP Prompt | 9,116 |
| 13 | webstudio | 8,619 |
| 14 | web-development-resources | 8,069 |
| 15 | p1xt-guides | 7,209 |
| 16 | whitestorm.js | 6,312 |
| 17 | wpt | 5,940 |
| 18 | projectlearn-project-based-learning | 5,918 |
| 19 | Front-End-Design-Checklist | 5,276 |
| 20 | Publish | 4,966 |
| 21 | front-end-handbook-2018 | 4,222 |
| 22 | esm.sh | 4,100 |
| 23 | Kore | 3,822 |
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