rrule
The premium Open Source alternative to Google Calendar API
🎯 Best for:Developers building scheduling systems that need to handle complex recurring events.
What is rrule?
Replaces custom recurrence logic for scheduling applications. It implements the iCalendar RFC 5545 specification for generating and parsing recurring dates.
Tech Stack
TypeScriptAutomation & Workflow
Why rrule?
- • Strict RFC 5545 compliance
- • Lightweight and fast
- • Works in browser and Node.js
Limitations
- • Complex API for simple rules
- • Requires understanding of iCal spec
- • Limited to JavaScript/TypeScript
3/5/2026
Last Update
544
Forks
209
Issues
Other
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to rrule instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on Google Calendar API)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%