Company lists · Data refreshed September 2026

Top 25 Outsourced administrative support companies worldwide

Name: Outsourced administrative support companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 17,590 companies tracked

RevenueBase identified 17,590 company matches for outsourced administrative support companies worldwide as of September 2026 and tracks 138,470 professional contacts across them, including 13,997 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for outsourced administrative support companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026. Country and city lists for outsourced administrative support companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

17,590Companies

138,470Contacts tracked

13,997Verified emails

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The 25 largest outsourced administrative support companies worldwide

Ranked by team size

Top 25 of 17,590 company matches for outsourced administrative support companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Information Evolution, INC	Exact match	Austin, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	1,238 contacts →
	Exact match “We are a boutique outsourcing firm specializing in keeping our customers' databases up-to-date, accurate, and as robust as possible.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	BELAY	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	201-500	1,074 contacts →
	Exact match “At BELAY, we help leaders accomplish more and juggle less by connecting them with exceptional, U.S-based Executive Assistants and Financial Experts through personalized, flexible…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Invensis	Exact match	Bangalore, IndiaHQ recorded Sep 20, 2026	1,001-5,000	995 contacts →
	Exact match “At Invensis, we solve business inefficiencies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Grupo Provac	Exact match	Araraquara, BrazilHQ recorded Sep 20, 2026	5,001-10,000	964 contacts →
	Exact match “Há mais de 40 anos no mercado de trabalho terceirizado, o Grupo Provac é uma empresa prestadora de serviços especializados, presente em mais de 130 cidades do Estado, com todo…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Wing Assistant	Exact match	Berkeley, CA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	946 contacts →
	Exact match “Wing provides small businesses, startups, execs, and enterprises with the top 1% of remote talent to take over recurring work such as Social Media Management, Executive…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Remote Helpers	Exact match	London, United KingdomHQ recorded Sep 20, 2026	201-500	816 contacts →
	Exact match “Hiring from us you receive a dedicated English speaking Virtual Assistants for Full/Part Time!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Sourcefit	Exact match	Quezon City, PhilippinesHQ recorded Sep 20, 2026	1,001-5,000	813 contacts →
	Exact match “Sourcefit is focused on providing custom offshore solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Osesp Serviços	Exact match	Sao Paulo, BrazilHQ recorded Sep 20, 2026	10001+	810 contacts →
	Exact match “Somos excelência em serviços terceirizados.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Prialto	Exact match	Portland, OR, United StatesHQ recorded Sep 20, 2026	201-500	703 contacts →
	Exact match “At Prialto, we exist to Amplify People, from every executive who uses our service to every employee who delivers it.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	DBP Service Corporation	Exact match	Makati City, PhilippinesHQ recorded Sep 20, 2026	10001+	697 contacts →
	Exact match “The DBP Service Corporation is an outsource company The company is guided and ran by a Board and Management Team, consisting of former and present Officers of the Development Bank…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Not Available	Exact match	Na, United StatesHQ recorded Sep 20, 2026	n/a	658 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Brickwork India	Exact match	Bangalore, IndiaHQ recorded Sep 20, 2026	201-500	557 contacts →
	Exact match “Brickwork India, a Women-owned Business Enterprise (WBE) and an ISO 27001: 2022 certified company, is the pioneer and leader in the Global Business Support Services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	IBS	Exact match	New Maadi, EgyptHQ recorded Sep 20, 2026	10001+	539 contacts →
	Exact match “We are a proud and happy company that serves the outsourcing field with passion and commitment.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Transegur Vigilância E Segurança	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 20, 2026	1,001-5,000	535 contacts →
	Exact match “Somos especialistas em terceirização de serviços de apoio ao seu negócio.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Grupo SRM	Exact match	Barueri, BrazilHQ recorded Sep 20, 2026	1,001-5,000	494 contacts →
	Exact match “Desde 1998 no Brasil, o Grupo SRM é referência em terceirização de serviços, oferecendo serviços especializados, capazes de melhorar a performance operacional e financeira da…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Amicassa Process Solutions, INC	Exact match	Makati City, PhilippinesHQ recorded Sep 20, 2026	201-500	457 contacts →
	Exact match “Amicassa Process Solutions, Inc.(AMICASSA), is a business process outsourcing company that provides after sales administration support to the Residential Business Group of Ayala…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Velan Info Services	Exact match	Dover, DE, United StatesHQ recorded Sep 20, 2026	201-500	447 contacts →
	Exact match “Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Pineapple Virtual Assistant Agency	Exact match	Sierra Vista, AZ, United StatesHQ recorded Sep 20, 2026	n/a	429 contacts →
	Exact match “Pineapple is a Virtual Assistant company that offers trained Virtual Assistants specializing in many industries such as: law, multimedia, healthcare, e-commerce, and other small…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Escalon Business Services, India	Exact match	Mohali, IndiaHQ recorded Sep 20, 2026	201-500	415 contacts →
	Exact match “Escalon’s one stop shop approach gives you a single touch point for everything you need to keep your company safe.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	BPO	Exact match	Venezia, ItalyHQ recorded Sep 20, 2026	n/a	406 contacts →
	Exact match “BPO was founded by a group of professionals with decades of experience in the human resources sector and with the aim of providing complete and comprehensive answers to the needs…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Sellbytel Group	Exact match	Nuremberg, GermanyHQ recorded Sep 20, 2026	5,001-10,000	359 contacts →
	Exact match “The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Hammerjack	Exact match	Sydney, AustraliaHQ recorded Sep 20, 2026	501-1,000	349 contacts →
	Exact match “hammerjack is an Australian and Philippine-owned offshore outsourcing and Knowledge Process Outsourcing (KPO) provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Limpservice Serviços	Exact match	Serra, BrazilHQ recorded Sep 20, 2026	1,001-5,000	341 contacts →
	Exact match “22 Anos atuando no mercado Capixaba e Nacional, fornecendo Mão de Obra Terceirizada para Grandes Empresas e Órgãos Públicos e Condomínios- Limpeza e Conservação - Porteiro / Ronda…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Transact Global	Exact match	Bangalore, IndiaHQ recorded Sep 20, 2026	1,001-5,000	340 contacts →
	Exact match “We specialize in end-to-end outsourcing across all industries and functions, including: Customer Support & Call Center Inbound/outbound call handling, technical support, live…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Adlim-Terceirizacao EM Servicos	Exact match	Bezerros, BrazilHQ recorded Sep 20, 2026	1,001-5,000	334 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “outsourced administrative support companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 17,590 outsourced administrative support companies worldwide

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Outsourced administrative support companies worldwide at a glance

As of Sep 20, 2026

10.1%Verified-email coverage

7.9Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

12,783

11-50

3,081

51-200

1,087

201-500

362

501-1,000

108

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for outsourced administrative support companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “outsourced administrative support companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 13,997 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Outsourced administrative support companies by location

50 lists · largest first

Every Outsourced administrative support companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “outsourced administrative support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourced administrative support companies are there worldwide?

RevenueBase identified 17,590 company matches for outsourced administrative support companies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Information Evolution, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most outsourced administrative support companies?

The United States leads with 2,822 companies, followed by the United Kingdom (1,607) and France (1,430). Every outsourced administrative support companies list by country and city is linked on this page.

Which city has the most outsourced administrative support companies?

London leads with 322 company records, followed by Sao Paulo (161) and Manila (116).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 13,997 professional contacts with verified work emails tracked across these 17,590 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.