Open Source Web Development Tools

Alternative toPlanner 5D

Browser-based 3D building editor, MIT licensed and self-hostable

• 25,007 GitHub stars
• MITLicence MIT

Alternative toSemrush

Open source alternative to Semrush and Ahrefs

• 24,272 GitHub stars
• MITLicence MIT

Alternative toMailchimp

High-performance newsletter and mailing list manager

• 23,880 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Email

Alternative tocommercetools

Open source headless e-commerce platform with GraphQL API

• 23,459 GitHub stars
• BSD-3-ClauseLicence BSD-3-Clause

Alternative toNova

Native Swift code editor for macOS with no Electron overhead

• 23,077 GitHub stars
• MITLicence MIT

Alternative toSpreadJS

Embed spreadsheets, docs, and slides in your own product

• 22,690 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toFont Awesome Pro

6,238 free MIT-licensed SVG icons for web and app design

• 22,378 GitHub stars
• MITLicence MIT

Alternative toLovable

Local, open-source AI app builder with your own API keys

• 22,031 GitHub stars
• CustomLicence Apache-2.0 with separate pro-directory license

Alternative toWix

Open source CMS with a block editor, 60,000+ plugins, and 40% market share.

• 21,485 GitHub stars
• GPL-2.0Licence GPL-2.0
• #CMS

InIT Management

Android app updates direct from GitHub and F-Droid

• 20,630 GitHub stars
• GPL-3.0Licence GPL-3.0