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Zulip vs Cal.com

The best value in each numeric row is marked. Sponsorship has no effect on any of them.

Comparison of Zulip vs Cal.com
Criteria Zulip
120 85.0 =
Cal.com
183 63.1 =
Score 85.0 (best) 63.1
Release freshness 96.4 (best) 48.1
Adoption signals 73.6 78.1 (best)
Release freshness
Updated 42 days ago
Stale: 204 days without a release
Latest version 12.2 · 2026-08-10v6.2.0 · 2026-03-01
Pricing FreeFree
License Open sourceOpen source
Platforms
Self-hosted ✓ ✓
Cloud ✓ ✓
Web ✓ ✓
Desktop ✓ -
Mobile ✓ -
Features
Integrations
Rank receipt: Zulip
#120 overall · #6 in category
85.0/100
  1. Release freshness +48.2 96.4 × 50%
  2. Adoption signals +36.8 73.6 × 50%
Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
Rank receipt: Cal.com
#183 overall · #8 in category
63.1/100
  1. Release freshness +24.1 48.1 × 50%
  2. Adoption signals +39.0 78.1 × 50%
Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula

Component values are before weighting. Read the full formula