Company lists · Data refreshed September 2026
Top 25 Appointment scheduling software developers worldwide
RevenueBase identified 2,075 appointment scheduling software developers worldwide as of September 2026 and tracks 11,669 professional contacts across them, including 2,827 with verified work emails. The United States is the largest market and London the largest hub.
This list covers appointment scheduling software developers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for appointment scheduling software developers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest appointment scheduling software developers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 507 contacts → | ||||
Indirect evidence “At Calendly, our vision is to take the work out of connecting with others so you can accomplish more.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 486 contacts → | ||||
Indirect evidence “Boulevard is the business management platform trusted by the fastest-growing salons, spas, and med spas.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 452 contacts → | ||||
Partial evidence “Empowering Salons, Spas, and Clinics Worldwide At Phorest, we provide innovative software designed to drive growth, streamline operations, and elevate client experiences.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 450 contacts → | ||||
Indirect evidence “At Vagaro, we're passionate about empowering businesses in the beauty, fitness, and wellness industries to thrive.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 368 contacts → | ||||
Partial evidence “Doctoralia is the leading technology platform for software and artificial intelligence solutions for healthcare professionals, clinics, hospitals, and patients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 340 contacts → | ||||
Partial evidence “GlossGenius is one of the quickest growing solutions powering small business owners across the US in the beauty & wellness space with elegant, vibrant, and intuitive software.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 214 contacts → | ||||
Partial evidence “Pabau is an all-in-one practice management software for clinics and medical spas.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 176 contacts → | ||||
Indirect evidence “AgendaPro es la plataforma líder en Latinoamérica para el agendamiento, gestión, pagos y crecimiento de negocios de belleza, bienestar y salud.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 134 contacts → | ||||
Indirect evidence “We’re here to grow the value of the beauty industry, with you and for you.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 120 contacts → | ||||
Partial evidence “Regiondo: The Leading Booking Software for Tours, Activities and Destinations Founded in 2011, Regiondo has carved out a niche as the leading booking solution for leisure service…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 94 contacts → | ||||
Strong evidence “YCLIENTS is an online booking software and all-in-one automation platform for service-based businesses: Book appointments online, set and manage employee schedules easily, reduce…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 89 contacts → | ||||
Indirect evidence “Checkfront helps schedule-based businesses better manage their operations, centralize administration, and sell and market their services online.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 88 contacts → | ||||
Strong evidence “MyTime is a fully integrated appointment scheduling, point-of-sale and customer engagement platform for multi-location chains and franchises.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 85 contacts → | ||||
Strong evidence “BookedBy is business management software for salons, spas, and other appointment-based service businesses that helps create exceptional client experiences, streamline operations…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 67 contacts → | ||||
Indirect evidence “Wir sagen Ihnen, wer wir sind, wie wir denken und worin unsere Stärken liegen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 64 contacts → | ||||
Strong evidence “At TIMIFY, we empower businesses with cutting-edge appointment booking and resource scheduling solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 60 contacts → | ||||
Indirect evidence “Put Your Service Business On Autopilot.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 57 contacts → | ||||
Strong evidence “SUMO is a customer engagement platform that includes online Appointment, Event, and Field Sales scheduling, built fully native on Salesforce.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 50 contacts → | ||||
Indirect evidence “Booker by is transforming the way local services are managed by businesses and discovered by consumers.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 48 contacts → | ||||
Partial evidence “Somos el software médico líder en LATAM para profesionales de la salud, clínicas estéticas y centros médicos que buscan digitalizar y optimizar su gestión.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 47 contacts → | ||||
Indirect evidence “En Cero ayudamos a que Hospitales y Clínicas atiendan a más pacientes y pierdan menos horas.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 46 contacts → | ||||
Strong evidence “FLS GmbH has been developing and distributing real-time software for appointment scheduling and route planning, workforce management, and mobile solutions since 1992.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 46 contacts → | ||||
Partial evidence “It all started in 2013 in Canada with a simple idea: help businesses who truly love what they do focus on their passion, without getting bogged down by complicated scheduling or…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 46 contacts → | ||||
Partial evidence “Cal.com is a modern, fully customizable scheduling platform built for teams that care about both power and design.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 46 contacts → | ||||
Partial evidence “SimplyBook.me is an online booking and scheduling platform for service businesses and organizations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: appointment scheduling software developers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names appointment scheduling software developers.
- Partial evidence
- Its own public description names part of appointment scheduling software developers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name appointment scheduling software developers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,075 appointment scheduling software developers worldwide
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Appointment scheduling software developers worldwide at a glance
As of Sep 27, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among appointment scheduling software developers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for appointment scheduling software developers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “appointment scheduling software developers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names appointment scheduling software developers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among appointment scheduling software developers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,827 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Appointment scheduling software developers by location
9 lists · largest firstEvery Appointment scheduling software developers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Appointment scheduling software developers based in the United States295
- Appointment scheduling software developers based in the United Kingdom100
- Appointment scheduling software developers based in France99
- Appointment scheduling software developers based in Brazil95
- Appointment scheduling software developers based in India90
- Appointment scheduling software developers based in Canada89
- Appointment scheduling software developers based in Germany64
- Appointment scheduling software developers based in the Netherlands52
- Appointment scheduling software developers based in Australia36
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names appointment scheduling software developers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many appointment scheduling software developers are there worldwide?
RevenueBase identified 2,075 appointment scheduling software developers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Calendly, headquartered in Atlanta, tops this list with the largest team on record.
Which country has the most appointment scheduling software developers?
The United States leads with 295 companies, followed by the United Kingdom (100) and France (99). Every appointment scheduling software developers list by country and city is linked on this page.
Which city has the most appointment scheduling software developers?
London leads with 32 headquartered companies, followed by Paris (27) and San Francisco (19).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,827 verified decision-maker contacts tracked across these 2,075 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.