Companies Using Calendly

I've worked with web crawl and technographic data for more than ten years, and Calendly is one of the clearest cases where you have to know what the detection counts before you quote it. In our October 2026 crawl, 180,383 websites carry Calendly, and we matched 125,669 of those domains to a company record. Calendly was founded in 2013 by Tope Awotona, per Calendly's about page. The short answer to who uses it: consultants, coaches and agencies with ten or fewer staff, plus single departments inside large organisations.

What a Calendly website is

Calendly counts here in two ways: the site loads Calendly's embed (the widget or popup), or it links out to a calendly.com booking page. On 11 October 2026 we opened a random sample of 60 live Calendly domains. We found Calendly on 55 homepages, and 41 of them (74.5%) only link to a booking page; 14 (25.5%) embed the widget. So the typical Calendly website is a small business with a "Book a call" button, not a scheduling page built into the site.

Among the largest companies the link rule picks up two kinds of noise, and we removed both from the company table. Webinar pages hosted by BigMarker on twilio.com, box.com and blackberry.com subdomains carry a BigMarker employee's Calendly link. Cookie banners on ironmountain.com, icumed.com and coolblue.nl link to Calendly's privacy policy. Neither showed up in the random sample of 60.

Sales Signal: A booking link is a lighter commitment than an embed. The 74.5% link-only majority is where embed, routing and team-scheduling upsells start; the embedded 25.5% are already invested in the product.

Growth trajectory

Calendly's monthly count in our current crawl went from 143,441 domains in June 2026 to 156,438 in July, 158,003 in August, 179,831 in September and 180,383 in October. The August-to-September step of 21,828 domains is the largest. I don't read it as a surge in adoption: the set of domains we crawl turns over every month, with dead sites dropping out and newly discovered ones added, and our detection signals widen over time, and both changes sit behind that step.

Calendly churn is visible too. Since our crawl began tracking it on 16 March 2026, Calendly has disappeared from 28,881 domains. That is about seven months of observed drops, not a lifetime figure.

"Three in four Calendly websites in our sample don't embed anything. They link to a booking page. That's the product working as designed, and it's also why Calendly's lead in scheduling looks so wide." - Mehmet Suleyman, CEO & Co-founder, TechnologyChecker.io

Sales Signal: The install base is large and turns over. The 28,881 domains that dropped Calendly since March changed something about how they take bookings this year, which makes them a timely list for any scheduling or CRM vendor.

Customer profile

By headcount, Calendly is a micro-business tool. Of the 123,184 Calendly companies with a known size, 79.13% have 1 to 10 employees and 16.5% have 11 to 50, so 117,801 (95.63%) have 50 or fewer. By age, 43.89% of the 84,789 companies with a founding year started in the 2020s and 39.95% in the 2010s.

The large-company tail is small, 248 companies above 1,000 staff, and it uses Calendly team by team. In our October 2026 check, the City of Boston's Registry links wedding bookings to Calendly, Toronto Metropolitan University's library embeds it, CU Anschutz's pharmacy school books virtual advising through it, Lutron Electronics runs its experience-center visits through it, and Bentley Systems' trust portal links to Calendly for CISO office hours. RWS, Deel and Enpal load the widget on their own sites.

Sales Signal: For enterprise accounts, a Calendly detection points to one team, so find the page it sits on. A registry office, a library or a showroom team is a different buyer from sales operations.

Industry and geography

Calendly is horizontal, but its center is clear. Business Consulting and Services leads at 10.01% (11,906 companies), then Professional Training and Coaching (6.83%), IT Services and IT Consulting (6.8%) and Software Development (6.32%). Consulting, coaching, advertising and marketing together hold 28.36%. Those are businesses whose inventory is their own time, so the booking page is where the sale starts.

Geographically, the United States has 45,706 Calendly companies, 4.6 times the United Kingdom's 9,834, and Germany (7,506) and France (7,388) follow. Of the 98,429 companies in the top 15 countries, 67% are in the US, UK, Canada or Australia.

Sales Signal: Financial services (6,684 companies) and accounting (3,102) are the regulated corner of the base, and wealth managers such as Cerity Partners and Mercer Advisors embed Calendly. Those firms are the natural audience for compliance, CRM-sync and routing add-ons.

Overlap, not switching

There's no migration table on this page. We publish a switching corridor only when no more than 40% of the domains ever seen with both tools still run both, and none of Calendly's seven directional corridors, across four competitors, passes. Cal.com comes closest. Since March 2026, 110 domains that dropped Calendly were running Cal.com, against 5 the other way, but 97 of the 223 domains ever seen with both still run both (43.5%).

The Acuity Scheduling pair is smaller and mixed: 18 domains that dropped Acuity were running Calendly and 7 went the other way, while 41 of the 74 ever seen with both still run both. Chili Piper (32 ever-both, 17 still both) and SimplyBook.me (27 and 20) are smaller again.

"Cal.com is the one pair that leans clearly one way, 110 to 5 since March. But 97 of the 223 sites that ever ran both still run both, so we can't call it a migration yet." - Mehmet Suleyman, CEO & Co-founder, TechnologyChecker.io

Sales Signal: Watch Cal.com. If the still-both share keeps falling toward 40%, the corridor becomes a real switching list; until then, the 97 domains running both tools are the consolidation opportunity.

Technology ecosystem

Across the 179,557 live Calendly domains in our October 2026 crawl, Google Analytics runs on 53.97% and WordPress on 38.02%, with Elementor on 18.25%. Hosted builders are common: Wix (7.69%), Squarespace (7.65%) and Webflow (5.92%). Contact Form 7 appears on 9.1%, HubSpot on 5.63% and HighLevel on 1.47%. Calendly's typical site, in other words, is a small marketing site with a booking button added.

Sales Signal: HubSpot's 5.63% and HighLevel's 1.47% mark the Calendly sites that already run a CRM or funnel tool. They're the ones most likely to need booking data synced into a pipeline.

G2 review signals

G2's summary puts ease of use first among Calendly's pros (171 mentions) and ease of scheduling second (139). The top cons are features missing from the free version (54) and calendar syncing issues (46), with price at 38. That fits a base where 79.13% of Calendly companies have 1 to 10 employees.

Sales Signal: The free-plan con is the conversion lever. Calendly's pricing page limits Free to one event type and one calendar connection, so a single-founder business adding a second service is the moment to pitch an upgrade or an alternative.

Key takeaways

• Calendly runs on 180,383 websites in our October 2026 crawl and holds 63.72% of Appointment Scheduling, about 12.3 times Bookly.
• In a 60-site random check, 41 of the 55 Calendly sites only link to a booking page; 14 embed it.
• 79.13% of Calendly companies have 1 to 10 employees, and consulting is the top industry at 10.01%.
• Large organisations use it by department: Boston's Registry, a university library, a pharmacy school's advising office.
• No competitor corridor passes our switching test; Cal.com (110 to 5, 43.5% still both) is the one to watch.

Sales applications

Outreach template: "Hi [Name], [Company]'s site sends visitors to a Calendly booking link. Most of the 180,383 Calendly sites we track work the same way. If bookings should land in [CRM] automatically, here's how [your product] does it."

Targeting strategy: Filter Calendly companies with 1 to 50 employees in Business Consulting, Coaching or Financial Services in the US or UK. That's the core of the base.

Competitive angle: For domains running both Calendly and Cal.com, lead with consolidation: one booking tool, one set of seats.

The full Calendly list on TechnologyChecker.io covers 180,383 websites and 125,669 matched companies from our October 2026 crawl, with filters for size, country, industry and stack.