
Prosemirror
Developer Tools
Open-source toolkit from Marijn Haverbeke for building rich-text editors with structured schema and collaborative editing.

Developer Tools
Open-source toolkit from Marijn Haverbeke for building rich-text editors with structured schema and collaborative editing.
Developer Tools
Open-source JavaScript tool manager with automatic version switching and pnpm/yarn support.

Data Visualization
Open-source data visualization app with graphs, charts, and interactive tools for developers.
Developer Tools
Free online JSON validator and reformatter helping developers check JSON syntax and structure.
Developer Tools
Open source discovery service monitoring millions of packages across 36 package managers for dependency health.

Developer Experience Platforms
Open-source reactive Python notebook that replaces Jupyter with pure Python files that are easy to reproduce and deploy.
Developer Tools
Artifex's open-source PostScript and PDF interpreter with SaaS API for PDF conversion and manipulation.
Developer Tools
Open-source package management system for macOS providing easy use of open-source software.

Developer Tools
Leading open-source JavaScript library for mobile-friendly interactive maps used by many mapping apps.

Content Delivery Networks
Free open-source CDN for web developers combining the best of multiple providers for fast delivery.