Productivity

Excalidraw: Where Free-Hand Creativity Meets Digital Collaboration

Excalidraw transforms your ideas into beautiful hand-drawn diagrams with an intuitive canvas, real-time collaboration, and bank-level encryption—all while being completely free and open-source.

Cal.com: Reimagined Open-Source Scheduling

Cal.com delivers the ultimate scheduling experience with customizable booking links, team collaboration, and developer-friendly infrastructure—all with the freedom and privacy of open-source.

Stirling PDF: The PDF Powerhouse That Keeps Your Data Private

Stirling PDF is a locally hosted, privacy-first PDF toolkit that gives you complete control over your documents—from merging and splitting to OCR and redaction, all without sending your files to the cloud.