Cal.diy
Online appointment scheduling system.
Cal.diy vs Rallly
Two self-hosted Booking and Scheduling apps, compared on the facts we track: GitHub popularity and activity, license, language, Docker images and a rough hosting estimate.
Side by side
| Cal.diy | Rallly | |
|---|---|---|
| Description | Online appointment scheduling system. | Create polls to vote on dates and times (alternative to Doodle). |
| GitHub stars | 49,700 | 5,337 |
| Forks | 15.5k | – |
| Open issues (incl. PRs) | 1.6k | – |
| Commits (12 months) | 1.7k | 1.7k |
| Last activity | 2026-11-03 | 2026-11-04 |
| Latest release | v6.2.0 (2026-03-01) | untagged-6490d7892bf741592dba (2026-11-01) |
| Maintenance health | Active | Active |
| License | MIT | AGPL-3.0 |
| Language / platform | Nodejs | Nodejs, Docker |
| Docker Hub image | calcom/cal.diy | – |
| Docker pulls | 0 | – |
| Est. server size | ~1 GB, 1 vCPU | ~1 GB, 1 vCPU |
| Est. hosting from | $5/mo | $5/mo |
| Categories | Booking and Scheduling | Booking and Scheduling, Polls and Events |
| Links | Website · Source | Website · Source |
What the numbers say
- Cal.diy is more popular on GitHub: 49.7k stars vs 5.3k for Rallly.
- Rallly published a release more recently (untagged-6490d7892bf741592dba on 2026-11-01; Cal.diy's latest is v6.2.0 on 2026-03-01).
- Cal.diy is licensed under MIT, Rallly under AGPL-3.0. Cal.diy's license is permissive; Rallly's is copyleft (changes you distribute must stay open).
- Both are written in Nodejs.
- Deployment options listed upstream: Cal.diy: none listed; Rallly: Docker.
- Only Cal.diy has a Docker Hub image that we detected (calcom/cal.diy).
Summary: Cal.diy leads on GitHub popularity and Docker Hub availability. The right choice depends on the features you need — read both project descriptions and docs.
This summary is generated from GitHub, Docker Hub and awesome-selfhosted data as of 2026-11-05. It does not rate features or quality.
Get the Docker images
Cal.diy
docker pull calcom/cal.diyImage on Docker Hub. Ports, volumes and environment variables differ per app; follow the official docs.
Frequently asked questions
Is Cal.diy or Rallly more popular?
Cal.diy has more GitHub stars (49,700 vs 5,337 for Rallly, as of 2026-11-05). Stars measure interest, not quality.
Which is more actively maintained, Cal.diy or Rallly?
Commits in the last 12 months: Cal.diy 1,660, Rallly 1,661. The last recorded activity was 2026-11-03 for Cal.diy and 2026-11-04 for Rallly. Our health labels: Cal.diy is “Active”, Rallly is “Active”.
What licenses do Cal.diy and Rallly use?
Cal.diy: MIT. Rallly: AGPL-3.0. Cal.diy's license is permissive; Rallly's is copyleft (changes you distribute must stay open).
Can I run Cal.diy and Rallly with Docker?
Cal.diy has a Docker Hub image (calcom/cal.diy). We did not find one for Rallly, though the upstream listing mentions Docker as a deployment option.
Read more
Rallly
Create polls to vote on dates and times (alternative to Doodle).
Browse all self-hosted Booking and Scheduling apps.