Company lists · Data refreshed September 2026

Top 25 Implementation services worldwide

Name: Implementation services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 29,619 companies tracked

RevenueBase identified 29,619 implementation services worldwide as of September 2026 and tracks 512,261 professional contacts across them, including 129,655 with verified work emails. The United States is the largest market and London the largest hub.

This list covers implementation services 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 21, 2026. Country and city lists for implementation services 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

29,619Companies

512,261Contacts tracked

129,655Verified emails

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The 25 largest implementation services worldwide

Ranked by team size

Top 25 of 29,619 implementation services worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to implementation services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	NTT Data	Indirect evidence	Tokyo, JapanHQ checked Sep 21, 2026	10001+	38,436 contacts →
	Indirect evidence “NTT DATA – a part of NTT Group – IT and business services headquartered in Tokyo.” Source: RevenueBase Database · checked Sep 21, 2026
2	Birlasoft	Indirect evidence	Pune, IndiaHQ checked Sep 21, 2026	10001+	13,983 contacts →
	Indirect evidence “Navigating Change.” Source: RevenueBase Database · checked Sep 21, 2026
3	Softtek	Indirect evidence	Monterrey, MexicoHQ checked Sep 21, 2026	10001+	13,490 contacts →
	Indirect evidence “At Softtek, we drive the strategic development of our clients through software engineering.” Source: RevenueBase Database · checked Sep 21, 2026
4	SHI International Corp	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 21, 2026	5,001-10,000	6,734 contacts →
	Indirect evidence “Think of SHI as your personal technology concierge.” Source: RevenueBase Database · checked Sep 21, 2026
5	Wavestone	Indirect evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 21, 2026	1,001-5,000	6,190 contacts →
	Indirect evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 21, 2026
6	Icon Strategic Solutions	Indirect evidence	Dublin, United KingdomHQ checked Sep 21, 2026	10001+	6,148 contacts →
	Indirect evidence “ICON Strategic Solutions is the global leading provider of Functional Service Provision (FSP) services.” Source: RevenueBase Database · checked Sep 21, 2026
7	Evalueserve	Indirect evidence	Zug, SwitzerlandHQ checked Sep 21, 2026	5,001-10,000	5,633 contacts →
	Indirect evidence “Evalueserve is a global Domain-led AI services company.” Source: RevenueBase Database · checked Sep 21, 2026
8	SII Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 21, 2026	5,001-10,000	5,519 contacts →
	Indirect evidence “With over 7 500 Power People, Sii is Poland’s #1 partner for technology consulting, AI-driven digital transformation, engineering, and business services, empowering companies to…” Source: RevenueBase Database · checked Sep 21, 2026
9	Liderança Serviços	Indirect evidence	São José, BrazilHQ checked Sep 21, 2026	10001+	4,504 contacts →
	Indirect evidence “Atuamos nos principais setores de terceirização, e somos pioneiros na implantação de contratos à distância.” Source: RevenueBase Database · checked Sep 21, 2026
10	Ips-Integrated Project Services	Indirect evidence	Blue Bell, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	3,577 contacts →
	Indirect evidence “IPS, a Berkshire Hathaway company, is a global leader in technical consulting, architecture, engineering, procurement, construction management, commissioning, qualification…” Source: RevenueBase Database · checked Sep 21, 2026
11	TMA Solutions	Indirect evidence	Ho Chi Minh, VietnamHQ checked Sep 21, 2026	1,001-5,000	3,002 contacts →
	Indirect evidence “TMA is a leading software company in Vietnam with engineers and 28 years of experience in providing quality software services for clients in 30 countries.” Source: RevenueBase Database · checked Sep 21, 2026
12	Scalian	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 21, 2026	5,001-10,000	2,860 contacts →
	Indirect evidence “Established in 1989, the Scalian Group has nearly employees in France and abroad.” Source: RevenueBase Database · checked Sep 21, 2026
13	Wissen Infotech	Indirect evidence	Hyderabad, IndiaHQ checked Sep 21, 2026	1,001-5,000	2,482 contacts →
	Indirect evidence “Wissen was established in the year We have global offices in the US, UK, Europe, Mexico, Middle East, and India, with best-in-class infrastructure and development facilities…” Source: RevenueBase Database · checked Sep 21, 2026
14	Allied Digital	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	1,001-5,000	2,475 contacts →
	Indirect evidence “Allied Digital Services is a globally recognized leader in Digital Transformation and a Master Systems Integrator, with over four decades of proven experience.” Source: RevenueBase Database · checked Sep 21, 2026
15	Trianz	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,331 contacts →
	Indirect evidence “Trianz is a "transformation services as a software" company - helping enterprises accelerate cloud adoption and AI transformation through Concierto, our unified, AI-first platform…” Source: RevenueBase Database · checked Sep 21, 2026
16	CTG	Indirect evidence	Amherst, NY, United StatesHQ checked Sep 21, 2026	5,001-10,000	2,264 contacts →
	Indirect evidence “CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.” Source: RevenueBase Database · checked Sep 21, 2026
17	Abacus	Indirect evidence	Lahore, PakistanHQ checked Sep 21, 2026	1,001-5,000	2,231 contacts →
	Indirect evidence “For almost 35 years, Abacus has been offering cutting-edge business solutions helping organisations to transform their visions into realities through a combination of latest…” Source: RevenueBase Database · checked Sep 21, 2026
18	Thoughtfocus	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,097 contacts →
	Indirect evidence “ThoughtFocus, headquartered in the U.S.” Source: RevenueBase Database · checked Sep 21, 2026
19	GURU	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 21, 2026	n/a	1,906 contacts →
	Indirect evidence “Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.” Source: RevenueBase Database · checked Sep 21, 2026
20	Jade Global	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,872 contacts →
	Indirect evidence “Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.” Source: RevenueBase Database · checked Sep 21, 2026
21	Fincons Group	Indirect evidence	Vimercate, ItalyHQ checked Sep 21, 2026	1,001-5,000	1,870 contacts →
	Indirect evidence “With more than 40 years of experience in IT Business Consulting and System Integration, Fincons Group partners with clients to support business growth through innovation.” Source: RevenueBase Database · checked Sep 21, 2026
22	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 21, 2026	1,001-5,000	1,735 contacts →
	Indirect evidence “Infotel accompagne les directions Informatiques et Métiers des grandes entreprises depuis 45 ans (Airbus, Air France, PSA, BNP Paribas, Banque de France ou encore BPCE, etc.).” Source: RevenueBase Database · checked Sep 21, 2026
23	Infovision INC	Indirect evidence	Richardson, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,728 contacts →
	Indirect evidence “Infovision, founded in 1995, is a leading global IT services company offering enterprise digital transformation and modernization solutions across business verticals.” Source: RevenueBase Database · checked Sep 21, 2026
24	Quadrant Technologies	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,664 contacts →
	Indirect evidence “Quadrant Technologies: Your Go-to IT Services Partner for a Digital Future For over a decade, Quadrant Technologies has established itself as a trailblazer in the IT services…” Source: RevenueBase Database · checked Sep 21, 2026
25	Nspira Management Services PVT LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 21, 2026	10001+	1,646 contacts →
	Indirect evidence “NSPIRA Management Services Pvt Ltd offers customized services to organizations that aim for professional excellence.” Source: RevenueBase Database · checked Sep 21, 2026

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: implementation services. 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 implementation services.
Partial evidence: Its own public description names part of implementation services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name implementation services. 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 29,619 implementation services worldwide

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Implementation services worldwide at a glance

As of Sep 21, 2026

25.3%Verified-email coverage

17.3Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

16,510

11-50

8,836

51-200

3,008

201-500

719

501-1,000

217

1,001-5,000

158

5,001-10,000

10001+

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 implementation services, 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 implementation services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “implementation services”. 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 implementation services), 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 implementation services, 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, 129,655 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 21, 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.

Implementation services by location

131 lists · largest first

Every Implementation services 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 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 implementation services, 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 implementation services are there worldwide?

RevenueBase identified 29,619 implementation services 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?

NTT Data, headquartered in Tokyo, tops this list with the largest team on record.

Which country has the most implementation services?

The United States leads with 5,433 companies, followed by India (2,689) and Germany (1,500). Every implementation services list by country and city is linked on this page.

Which city has the most implementation services?

London leads with 407 headquartered companies, followed by Sao Paulo (359) and Hyderabad (297).

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 129,655 verified decision-maker contacts tracked across these 29,619 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 21, 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.