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Sites using Cal.com

Open-source scheduling and appointment booking platform.

#2 of 544 in Scheduling Tracked since Apr 2026 Last seen: Sep 4, 2026 Website: cal.com
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2,931 sites

2,636 found by StackScope, 295 via launch platforms

StackScope Wider Web 1,890 StackScope Discovery (Indie) 746 Product Hunt 232 PeerPush 29 Hacker News 25 Other 9
  • StackScope Wider Web 1,890
  • StackScope Discovery (Indie) 746
  • Product Hunt 232
  • PeerPush 29
  • Hacker News 25
  • Other 9
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.1% -0.0pp
Most used with Cloudflare, HSTS, Cloudflare Bot Management
Top product types Marketing, AI, Developer Tools
Green hosting 31% vs 45% avg

Cal.com has been detected on 2,931 launches we've crawled, with 210 of those in September 2026 (0.1% of the month's launches so far). The 7-day rolling share is 0.1%, roughly steady week on week. Most recent detection: AI Receptionist for Small Business | 24/7 Call Answering & Booking | Laviano AI, today.

It's most commonly paired with Cloudflare, HSTS, and Cloudflare Bot Management. By product type, the launches using it are most often Marketing (28%), AI (15%), and Developer Tools (15%). By estimated origin, the United States leads (47%), ahead of India (11%). By domain ending, launches using it are 4.5 times as likely as the average launch to live on a .studio domain. The 291 scored launches using Cal.com average a StackScope score of 7.8 out of 10, against 6.4 across all launches we score.

What kind of products ship with Cal.com

1,527 launches

Marketing
27.70%
AI
14.73%
Developer Tools
14.73%
Productivity
8.71%
Finance
7.60%
Health
7.53%
Design
4.85%
Education
4.13%
Hiring & HR
3.08%
Content
2.62%
E-commerce
2.16%
Social
1.38%
Games
0.33%
Crypto
0.26%
Directory
0.20%

Domain endings using Cal.com

2,926 sites

  • .com 44.67%
  • .ai 8.82%
  • .io 5.37%
  • .co 5.23%
  • .dev 4.51%
  • .site 4.24%
  • .ca 3.21%
  • .app 3.14%
  • .in 2.67%
  • .tech 2.32%
  • .uk 1.74%
  • .me 1.61%
  • .online 1.33%
  • .xyz 1.20%
  • .studio 0.89%

Country

90 of 2,931 sites, where we are confident of the country.

  • United States United States 46.67%
  • India India 11.11%
  • United Kingdom United Kingdom 7.78%
  • Australia Australia 3.33%
  • Canada Canada 3.33%
  • Germany Germany 3.33%
  • France France 3.33%
  • Sri Lanka Sri Lanka 2.22%
  • Latvia Latvia 2.22%
  • Netherlands Netherlands 2.22%
  • British Virgin Islands British Virgin Islands 2.22%
  • United Arab Emirates United Arab Emirates 1.11%
  • Cyprus Cyprus 1.11%
  • Estonia Estonia 1.11%
  • Spain Spain 1.11%

Share of new sites using Cal.com

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.

0.1%
last 7 days
-0.0pp vs prior week
0.1%
September so far
210 of 278,365 sites
2,931
sites all time
since Apr 2026
Cal.com daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Sep Jun 24, 2026: Improved detection coverage for this technology. Weekly averages before this point, daily after. Jun 6 · 0 / 436 = 0.0% Jun 7 · 1 / 404 = 0.2% Jun 8 · 0 / 515 = 0.0% Jun 9 · 5 / 876 = 0.6% Jun 10 · 0 / 722 = 0.0% Jun 11 · 3 / 577 = 0.5% Jun 12 · 0 / 449 = 0.0% Jun 13 · 1 / 380 = 0.3% Jun 14 · 0 / 345 = 0.0% Jun 15 · 5 / 532 = 0.9% Jun 16 · 1 / 1052 = 0.1% Jun 17 · 3 / 907 = 0.3% Jun 18 · 4 / 674 = 0.6% Jun 19 · 2 / 547 = 0.4% Jun 20 · 1 / 443 = 0.2% Jun 21 · 2 / 383 = 0.5% Jun 22 · 4 / 576 = 0.7% Jun 23 · 5 / 900 = 0.6% Jun 24 · 4 / 737 = 0.5% Jun 25 · 3 / 618 = 0.5% Jun 26 · 5 / 534 = 0.9% Jun 27 · 0 / 431 = 0.0% Jun 28 · 0 / 383 = 0.0% Jun 29 · 4 / 503 = 0.8% Jun 30 · 1 / 801 = 0.1% Jul 1 · 2 / 795 = 0.3% Jul 2 · 1 / 604 = 0.2% Jul 3 · 2 / 499 = 0.4% Jul 4 · 1 / 411 = 0.2% Jul 5 · 1 / 367 = 0.3% Jul 6 · 2 / 551 = 0.4% Jul 7 · 8 / 1172 = 0.7% Jul 8 · 31 / 12591 = 0.2% Jul 9 · 42 / 23751 = 0.2% Jul 10 · 28 / 22553 = 0.1% Jul 11 · 24 / 15986 = 0.2% Jul 12 · 33 / 20293 = 0.2% Jul 13 · 42 / 20930 = 0.2% Jul 14 · 30 / 20417 = 0.1% Jul 15 · 29 / 17247 = 0.2% Jul 16 · 24 / 14268 = 0.2% Jul 17 · 26 / 19731 = 0.1% Jul 18 · 42 / 22707 = 0.2% Jul 19 · 34 / 26089 = 0.1% Jul 20 · 31 / 22591 = 0.1% Jul 21 · 31 / 21662 = 0.1% Jul 22 · 36 / 23209 = 0.2% Jul 23 · 17 / 16875 = 0.1% Jul 24 · 13 / 12859 = 0.1% Jul 25 · 14 / 8950 = 0.2% Jul 26 · 30 / 19988 = 0.2% Jul 27 · 47 / 33888 = 0.1% Jul 28 · 61 / 38232 = 0.2% Jul 29 · 66 / 50128 = 0.1% Jul 30 · 42 / 43972 = 0.1% Jul 31 · 63 / 51145 = 0.1% Aug 1 · 67 / 50533 = 0.1% Aug 2 · 54 / 49754 = 0.1% Aug 3 · 55 / 48271 = 0.1% Aug 4 · 33 / 37361 = 0.1% Aug 5 · 46 / 32720 = 0.1% Aug 6 · 22 / 36608 = 0.1% Aug 7 · 32 / 37907 = 0.1% Aug 8 · 42 / 39701 = 0.1% Aug 9 · 39 / 34234 = 0.1% Aug 10 · 28 / 28887 = 0.1% Aug 11 · 36 / 32046 = 0.1% Aug 12 · 30 / 33512 = 0.1% Aug 13 · 41 / 49979 = 0.1% Aug 14 · 48 / 51457 = 0.1% Aug 15 · 52 / 51544 = 0.1% Aug 16 · 57 / 51868 = 0.1% Aug 17 · 49 / 41475 = 0.1% Aug 18 · 56 / 53971 = 0.1% Aug 19 · 45 / 49562 = 0.1% Aug 20 · 72 / 66963 = 0.1% Aug 21 · 89 / 90472 = 0.1% Aug 22 · 73 / 91570 = 0.1% Aug 23 · 60 / 90302 = 0.1% Aug 24 · 83 / 78982 = 0.1% Aug 25 · 56 / 69441 = 0.1% Aug 26 · 67 / 65228 = 0.1% Aug 27 · 75 / 83513 = 0.1% Aug 28 · 75 / 83452 = 0.1% Aug 29 · 70 / 84372 = 0.1% Aug 30 · 80 / 92684 = 0.1% Aug 31 · 62 / 90202 = 0.1% Sep 1 · 71 / 91290 = 0.1% Sep 2 · 76 / 96641 = 0.1% Sep 3 · 63 / 90434 = 0.1%
Mar 30, 2026 90 days Sep 3, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

⋮ Jun 24, 2026: Improved detection coverage for this technology.

Scheduling leaders

Tool % of launches % of category
#1 – Calendly 0.17% 37.89%
#2 – Cal.com Current page 0.11% 23.83%
#3 – Acuity Scheduling 0.04% 8.07%
#4 – Google Calendar 0.04% 7.80%
#5 – Housecall Pro 0.01% 3.18%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Scheduling tool. All 544 in Scheduling →

Often used with

Tool Sites
Cloudflare 2,402
HSTS 2,041
Cloudflare Bot Management 1,939
Tailwind CSS 1,366
Cloudflare DNS 1,313

Tools most often detected on the same sites as Cal.com.

Recent launches we can show

1,041 of the 2,931 sites using Cal.com are product launches we list individually. The other 1,890 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

AI Receptionist for Small Business | 24/7 Call Answering & Booking | Laviano AI Sep 4, 2026 Marketing AI Receptionist Ireland | 24/7 Automated Phone Answering Sep 4, 2026 String Loop | Systems for creative studios Sep 3, 2026 modernagents — Modern AI agents, engineered for Europe Sep 3, 2026 AI ClipVerse | Short-Form Clipping Agency · Zero Bot Tolerance Sep 3, 2026 Ellora — scale content with AI without sounding like AI Sep 3, 2026 Marketing StocksSense — Know What To Buy Next Month Sep 3, 2026 E-commerce KORASOM Sep 3, 2026 Education Logiciel Traiteur : Devis, Factures & Gestion | Planoya Sep 3, 2026 Productivity Screenshot of Keydris, a launch using Cal.com Keydris Sep 3, 2026 · score 10.0 United States Developer Tools MarrettAI — AI voice agents & AI social media marketing Sep 3, 2026 PreparedDocs — Document Readiness Platform Sep 3, 2026

Showing the most recent 12 of 1,041.

The StackScope API serves all 2,931 sites using Cal.com, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.