1. GrapesJS

Open-source web builder framework for creating templates without coding. Website - GitHub

• Technology? JavaScript
• ❌ CMS
• ✅ Open source
• ✅ Community plugins
• ✅ Community themes
• ✅ Low-code / No-code
• ✅ Free

2. Node-RED

A flow-based development tool for visual programming. Website - GitHub

• Technology? JavaScript, Node.js
• ❌ CMS
• ✅ Open source
• ✅ Community plugins
• ❌ Community themes
• ✅ Low-code / No-code
• ✅ Free

3. OutSystems

Platform to develop, deploy, and manage enterprise-grade apps. Website

• Technology? Proprietary
• ✅ CMS
• ❌ Open source
• ❌ Community plugins
• ❌ Community themes
• ✅ Low-code / No-code
• ❌ Free

4. (Out of place)

5. Presto

A platform for building custom business applications. Website - GitHub

• Technology? JavaScript, React
• ❌ CMS
• ✅ Open source
• ❌ Community plugins
• ❌ Community themes
• ❌ Low-code
• ❌ Free

6. Plus: Webcrumbs

Create and modify React websites and applications with a no-code interface and powerful plugins, enriched by the community. GitHub 🌟 Star to support our work!

• Technology? React
• ✅ CMS
• ✅ Open source
• ✅ Community plugins
• ✅ Community themes
• ✅ Low-code / No-code
• ✅ Free