Cal ID
Product Hunt
Schedule and monetize meetings for free
GitHub & Open Source
Open Source
Productivity
Meetings
Listed Nov 10, 2025
Cal ID is a fully open-source scheduling tool for solos and teams, with unlimited meetings, comprehensive integrations, real human support – and amazing features shipping at lightspeed.
GitHub & Open Source
Growing
Few apps + High potential5
of 59
Total Apps
639
This Week
639
+1%Topics
2
Competition
26Opportunity
47Market positioning
Growing · vs 58 other categories
