Cal.com vs 
Rallly
Compared on data, not vibes. Metrics refresh nightly; verdict links carry the math.
| Cal.com | Rallly | |
|---|---|---|
| GitHub stars | 47,409 | 5,209 |
| Last commit | 2d ago | 0d ago |
| Latest release | v6.2.0 | v4.12.2 |
| Docker pulls | — | — |
| License | AGPL-3.0 | AGPL-3.0 |
| Min RAM | 4,096 MB | 2,048 MB |
| Containers | 2 | 2 |
| ARM (Pi-friendly) | yes | yes |
Cal.com
Send someone a link, they pick a slot, the invite lands in both calendars, and none of it runs on a domain you are renting.
Backs these verdicts
Rallly
Send a group a link, let them tick the times that work, and pick the winner, with no cap on how many people answer.
Backs these verdicts
Neither page tells you which is "better" — they solve the same jobs differently. Pick by the constraint that binds you: RAM, ARM, license, or how alive the project looks.