Cal.com vs Rallly: which one to choose in 2026?
Both are open source alternatives to Calendly. We compare license, tech stack and features to help you decide which fits your team best.
| Cal.com | Rallly | |
|---|---|---|
| Category | Productivity | Productivity |
| License | AGPL-3.0 | AGPL-3.0 |
| GitHub stars | 32k | 5k |
| Tech stack | Next.js, PostgreSQL, Prisma | Next.js, PostgreSQL |
| Replaces | Calendly | Doodle, Calendly |
Cal.com has more GitHub stars, which usually indicates a larger community (not necessarily that it's the best option for your use case).
Cal.com
Open source meeting scheduling, an alternative to Calendly.
Pros
- Fully white-label, your own domain and brand
Things to consider
- Initial setup is more technical than signing up for Calendly
Rallly
Availability polls for meetings, an alternative to Doodle.
Pros
- Voters don't need to sign up
Things to consider
- Doesn't replace Calendly's 1-on-1 scheduling, group polls only
Key features
Cal.com
- Custom booking pages
- Google/Outlook Calendar sync
- Built-in video calls (Cal Video)
- Team meeting routing
Rallly
- Date polls with no account required
- Automatic email reminders
- Calendar integration