Best Open Source Scheduling Projects
Cal.com
Open-source Calendly alternative
★ 49,037 Updated: Sep 2026 Status: Active
Q
QloApps
Open-source hotel booking and reservation system
★ 14,429 Updated: Oct 2026 Status: Active
Rallly
Find a time that suits everyone by sharing a poll, with no account needed for the people you invite.
★ 5,305 Updated: Oct 2026 Status: Active
E
EasyAppointments
Self-hosted appointment scheduler
★ 4,436 Updated: Oct 2026 Status: Active
W
WebCalendar
PHP calendar for individuals and groups
★ 173 Updated: Oct 2026 Status: Active
B
Butler
Automated to-do scheduler based on your free time
★ 5 Updated: Jun 2021 Status: Inactive
S
SOPlanning
Shared planning tool for tasks and resources
★ 3 Updated: Aug 2024 Status: Inactive
Kukkee
Coordinate schedules effortlessly through voting
Status: Unknown