Sites using Cal ID
Free open-source scheduling and appointment booking tool.
6 sites
3 found by StackScope, 3 via launch platforms
- StackScope Wider Web 2
- StackScope Discovery (Indie) 1
- Product Hunt 3
Cal ID has been detected on 3 launches since first appearing in June 2026. Most recent detection: Fluid AI, on July 11, 2026.
It's most commonly paired with Google Workspace, Google Analytics, and Google Tag Manager.
Share of new launches using Cal ID
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
Scheduling leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Calendly
|
0.33% | 46.14% |
| #2 | – |
Cal.com
|
0.31% | 43.68% |
| #3 | – |
Chili Piper
|
0.04% | 5.09% |
| #4 | ▼1 |
Google Calendar
|
0.03% | 4.91% |
| #5 | ▼1 | Zoho Bookings | 0.01% | 1.93% |
| … | ||||
| #7 | ▼3 |
Cal ID
Current page
|
<0.01% | 0.53% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Scheduling tool.Among July launches it ranked #9 in Scheduling, down from #6 in June. All 27 in Scheduling →
Often used with
| Tool | Launches |
|---|---|
Google Workspace
|
3 |
Google Analytics
|
3 |
Google Tag Manager
|
3 |
| HTTP/3 | 3 |
| HSTS | 3 |
Tools most often detected on the same launches as Cal ID.
