Crontab Guru

Open-source Calendly alternative for scheduling meetings. Self-hostable, no per-seat pricing, integrates with all calendar services. The scheduling tool you can truly own. Booking pages, availability rules and team round-robin are all included rather than gated behind a higher tier.

A Progressive Web App for organizing tasks and appointments in one place. Its name points to a scheduling focus, as Termine is German for appointments, and it suits individuals who want a simple browser-based organizer for daily to-dos and upcoming dates without installing a native app.

A timetable app that assembles a lecture schedule from different student groups, letting students combine the classes they attend into one view. Built as a progressive web app, it targets university students who need a consolidated schedule instead of checking separate group timetables.

A simple React-based web app for building a class timetable from the subjects you choose. Students can pick their courses and generate a personal schedule without spreadsheets or manual drawing, making it handy for organizing a semester at school or university.

Fast, offline, and free documentation browser for developers. Search 100+ docs in one web app including HTML, CSS, JavaScript, PHP, Ruby, Python, Go, C, C++, and many more.

Decode, verify, and generate JSON Web Tokens in the browser. Paste a JWT and instantly see the header, payload, and signature. The go-to debugging tool for auth developers.