Free open-source scheduling and appointment booking tool.
Cal ID has been detected on a single launch we've crawled, Snezzi, on June 6, 2026. It's most commonly paired with Astro, Cloudflare, and Cloudflare DNS.
Share of new launches using Cal ID
Each dot is one launch day. Line is the 7-day rolling average.
0.0%
last 7 days
0.0%
June so far
1
launch all time
Apr 1, 2026
67 days
Jun 6, 2026
Scheduling leaders
| Tool | % of launches | % of category | |
|---|---|---|---|
| #1 | Calendly | 0.3% | 47.4% |
| #2 | Cal.com | 0.3% | 41.1% |
| #3 | Google Calendar | 0% | 6.7% |
| #4 | Chili Piper | 0% | 4.8% |
| #5 | NimbusPop | 0% | 1.5% |
| #6 | Lu.ma | 0% | 0.7% |
| #7 | Luma | 0% | 0.7% |
| #8 | Mindbody | 0% | 0.7% |
| #9 | Zoho Bookings | 0% | 0.7% |
| #10 | Cal ID ← this page | 0% | 0.4% |
| #11 | Microsoft Bookings | 0% | 0.4% |
| #12 | OpenTable | 0% | 0.4% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Scheduling tool. All 20 in Scheduling →
1 launch using Cal ID
| Launch | Launched | Score |
|---|---|---|
| Snezzi | Jun 6, 2026 | 8.9 |
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