Company lists · Data refreshed September 2026
Top 25 Outbound calling platforms worldwide
RevenueBase identified 1,630 outbound calling platforms worldwide as of September 2026 and tracks 21,093 professional contacts across them, including 3,230 with verified work emails. The United States is the largest market and London the largest hub.
This list covers outbound calling platforms 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 29, 2026. Country and city lists for outbound calling platforms 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 outbound calling platforms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 649 contacts → | ||||
Indirect evidence “We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 553 contacts → | ||||
Indirect evidence “At Futwork, we specialize in omnichannel communication solutions that integrate seamlessly with your business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 289 contacts → | ||||
Indirect evidence “Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 256 contacts → | ||||
Indirect evidence “Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 247 contacts → | ||||
Partial evidence “Rocket Connections is a sales and support platform specializing in contact center services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 243 contacts → | ||||
Indirect evidence “The Telemarketing Company is one of the UK's most trusted telemarketing agencies, delivering flexible, high-quality voice services, including pre and post sales research…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 241 contacts → | ||||
Strong evidence “Convoso is an AI-powered contact center platform built for revenue teams and customer engagement organizations expanding into outbound growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 212 contacts → | ||||
Indirect evidence “At CloudTalk, we're transforming how small and growing businesses manage business calls.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 205 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 192 contacts → | ||||
Indirect evidence “C-Zentrix is a leading Customer Experience and contact center solution provider with clients all over India, APAC, Middle East Asia, North America and Africa.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 184 contacts → | ||||
Indirect evidence “At The Sydney Call Centre Inc.(SCC), we redefine excellence in the realms of Business Process Outsourcing (BPO) and Information and Communications Technology (ICT).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 180 contacts → | ||||
Partial evidence “Gold Mountain Communications is a US-based live operator inbound/outbound call center and service agency helping leading national corporations outsource their customer service and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 169 contacts → | ||||
Partial evidence “Respond.io is the customer conversation management platform that helps mid-market B2C businesses turn conversations into customers across WhatsApp, Instagram, TikTok, voice calls…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 147 contacts → | ||||
Indirect evidence “At Teckinfo, we are committed to pioneering advancements in communication technology.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 146 contacts → | ||||
Indirect evidence “En Balat llevamos más de 30 años acompañando a empresas, organizaciones y marcas en uno de los momentos más importantes de su relación con las personas: cada interacción.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 143 contacts → | ||||
Partial evidence “Orum is the live calling performance system for modern SDR teams.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 143 contacts → | ||||
Partial evidence “In the world of outbound sales, traditional cloud telephony systems often demand heavy infrastructure, complex setups, and significant investment, creating barriers for SMBs and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 139 contacts → | ||||
Partial evidence “TELEMARKETING Outbound • Venta de Productos y Servicios • Seguimiento Post-Venta • Generación de Citas • Confirmación de Citas • Gestión de Cobranza • Encuestas de Servicio •…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 137 contacts → | ||||
Indirect evidence “Balboa Digital Provides Trusted, Compliant, Effective Call Center Services Get to know Balboa Digital - Our experience, expertise, and innovative call technology, set us apart.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 133 contacts → | ||||
Indirect evidence “A 2CX é o resultado da fusão entre duas empresas renomadas, Callflex e VoxAge.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 132 contacts → | ||||
Indirect evidence “On May 10, 2021 Aspect Software and Noble Systems merged to form Alvaria.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 127 contacts → | ||||
Indirect evidence “ZIWO is Cloud Contact Center Software (CCAAS) that provides a straightforward solution for companies to talk to their clients with a crystal-clear voice.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 113 contacts → | ||||
Partial evidence “CallHub is the leading global digital organizing platform for political campaigns, nonprofits, advocacy groups, and businesses to interact with their audiences seamlessly.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 109 contacts → | ||||
Indirect evidence “Meet Robbu, software is about humanity, we are the first generation in the world to have this digital service experience!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 105 contacts → | ||||
Indirect evidence “NeoDove is a Telecalling CRM that helps small and medium businesses enhance their telecalling team’s productivity and performance to drive higher growth in revenue.” Source: RevenueBase Database · checked Sep 29, 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: outbound calling platforms. 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 outbound calling platforms.
- Partial evidence
- Its own public description names part of outbound calling platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outbound calling platforms. 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 1,630 outbound calling platforms worldwide
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Outbound calling platforms worldwide at a glance
As of Sep 29, 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 outbound calling platforms, 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 outbound calling platforms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “outbound calling platforms”. 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 outbound calling platforms), 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 outbound calling platforms, 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, 3,230 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 29, 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.
Outbound calling platforms by location
7 lists · largest firstEvery Outbound calling platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Outbound calling platforms based in the United States370
- Outbound calling platforms based in India114
- Outbound calling platforms based in the United Kingdom83
- Outbound calling platforms based in Brazil61
- Outbound calling platforms based in Canada50
- Outbound calling platforms based in Germany27
Cities
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 outbound calling platforms, 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 outbound calling platforms are there worldwide?
RevenueBase identified 1,630 outbound calling platforms 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?
Girnar Care, headquartered in Jaipur, tops this list with the largest team on record.
Which country has the most outbound calling platforms?
The United States leads with 370 companies, followed by India (114) and the United Kingdom (83). Every outbound calling platforms list by country and city is linked on this page.
Which city has the most outbound calling platforms?
London leads with 33 headquartered companies, followed by Rawalpindi (21) and Sao Paulo (20).
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 3,230 verified decision-maker contacts tracked across these 1,630 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 29, 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.