Calcom Calendar vs Rallly
A side-by-side comparison of two self-hosted groupware options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Calcom Calendar
Open-source scheduling and appointment booking platform
VS
Rallly
Self-hosted meeting and event scheduling polls
| Feature | Calcom Calendar | Rallly |
|---|---|---|
| Category | Groupware | Groupware |
| License | AGPL-3.0 | AGPL-3.0 |
| Language | TypeScript | TypeScript |
| Setup difficulty | Medium | Easy |
| Min. RAM | 1,024 MB | 512 MB |
| Deployment | docker, bare-metal, source | docker, source |
| GitHub stars | ★ 47,334 | ★ 5,206 |
| First released | 2021 | 2015 |
| Replaces | Calendly, Doodle | Doodle, When2meet |
Why pick each one
Frequently asked questions
Is Calcom Calendar or Rallly better?
Neither is universally better. Calcom Calendar has the larger community, while Rallly is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Calcom Calendar and Rallly free and open-source?
Yes. Calcom Calendar is licensed under AGPL-3.0 and Rallly under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Calcom Calendar and Rallly with Docker?
Calcom Calendar: yes. Rallly: yes.