Side-by-side open source comparison

Cal.comOpen Source

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

FocalboardOpen Source

Open source project management tool with kanban, table, and calendar views

Overview

Cal.comFocalboard

TypeOpen SourceOpen Source

CategoryProject ManagementProject Management

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

Self-Hostable

LicenseAGPL-3.0AGPL-3.0

GitHub Metrics

Cal.comFocalboard

Stars41.5k26.1k

Forks12.9k2.5k

Contributors438243

Open Issues1.3k778

Last CommitApr 2026Jun 2025

Latest Release----

Cal.comFocalboard

Health Score

93Excellent

78Good

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