Cal.comvsOpenProject

Side-by-side open source comparison

Cal.comOpen Source

Open source scheduling infrastructure — the Calendly alternative for individuals and teams

Open source project management software with Gantt charts, agile boards, and time tracking

Overview

Cal.comOpenProject

TypeOpen SourceOpen Source

CategoryProject ManagementProject Management

PricingFree (self-hosted)Free (self-hosted)

Self-Hostable

LicenseAGPL-3.0GPL-3.0

Cal.comOpenProject

Stars40.4k14.5k

Forks12.1k3.1k

Contributors439279

Open Issues1.4k173

Last CommitMar 2026Mar 2026

Latest Release----

Cal.comOpenProject

Health Score

93Excellent

80Excellent