Company lists · Data refreshed September 2026

Top 25 Implementation service providers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 25,195 companies tracked

RevenueBase identified 25,195 implementation service providers worldwide as of September 2026 and tracks 611,467 professional contacts across them, including 146,060 with verified work emails. The United States is the largest market and Hyderabad the largest hub.

This list covers implementation service providers 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 20, 2026. Country and city lists for implementation service providers 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 20, 2026 86% judged on-target in blind review

25,195Companies

611,467Contacts tracked

146,060Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest implementation service providers worldwide

Ranked by team size

Top 25 of 25,195 implementation service providers worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to implementation service providers: 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 20, 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 20, 2026
2	Birlasoft	Indirect evidence	Pune, IndiaHQ checked Sep 20, 2026	10001+	13,983 contacts →
	Indirect evidence “Navigating Change.” Source: RevenueBase Database · checked Sep 20, 2026
3	Softtek	Indirect evidence	Monterrey, MexicoHQ checked Sep 20, 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 20, 2026
4	NTT Data Business Solutions	Indirect evidence	Bielefeld, GermanyHQ checked Sep 20, 2026	10001+	10,733 contacts →
	Indirect evidence “We understand the business of our clients and know what it takes to transform it into the future.” Source: RevenueBase Database · checked Sep 20, 2026
5	BMC Software	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	9,230 contacts →
	Indirect evidence “BMC empowers 86% of the Forbes Global 50 to accelerate business value faster than humanly possible.” Source: RevenueBase Database · checked Sep 20, 2026
6	Epicor	Indirect evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	5,802 contacts →
	Indirect evidence “We’re here for the hard-working businesses that keep the world turning.” Source: RevenueBase Database · checked Sep 20, 2026
7	SII Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 20, 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 20, 2026
8	CGS Computer Generated Solutions	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	5,001-10,000	4,608 contacts →
	Indirect evidence “For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…” Source: RevenueBase Database · checked Sep 20, 2026
9	Software AG	Indirect evidence	Darmstadt, GermanyHQ checked Sep 20, 2026	n/a	4,127 contacts →
	Indirect evidence “Software AG has been helping enterprises run and evolve their core business applications for over 50 years.” Source: RevenueBase Database · checked Sep 20, 2026
10	Visionet Systems INC	Indirect evidence	Cranbury, NJ, United StatesHQ checked Sep 20, 2026	10001+	3,119 contacts →
	Indirect evidence “Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.” Source: RevenueBase Database · checked Sep 20, 2026
11	Altron Digital Business	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 20, 2026	1,001-5,000	2,877 contacts →
	Indirect evidence “Operate, optimise, and transform with the IT services company that offers the enterprise-grade solutions needed to grow your business.” Source: RevenueBase Database · checked Sep 20, 2026
12	Abacus	Indirect evidence	Lahore, PakistanHQ checked Sep 20, 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 20, 2026
13	GFI World	Indirect evidence	Saint-ouen, FranceHQ checked Sep 20, 2026	10001+	2,169 contacts →
	Indirect evidence “Gfi became Inetum in 2020.” Source: RevenueBase Database · checked Sep 20, 2026
14	Thoughtfocus	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,097 contacts →
	Indirect evidence “ThoughtFocus, headquartered in the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
15	IT Convergence	Indirect evidence	Irving, IL, United StatesHQ checked Sep 20, 2026	501-1,000	1,950 contacts →
	Indirect evidence “IT Convergence is a global Oracle Platinum Partner with a comprehensive service offering across all three pillars of the Cloud (IaaS, PaaS, SaaS), including Consulting/Advisory…” Source: RevenueBase Database · checked Sep 20, 2026
16	Gspann Technologies, INC	Strong evidence	Milpitas, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,878 contacts →
	Strong evidence “GSPANN is a US-based consulting services provider focused on implementations in Enterprise Content Management (ECM), Business Intelligence & Mobile Solutioning initiatives.” Source: RevenueBase Database · checked Sep 20, 2026
17	Exadel	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,874 contacts →
	Indirect evidence “Exadel is a leading global software consulting and development company that looks beyond the code to maximize the technology-driven business impact our partners want to make.” Source: RevenueBase Database · checked Sep 20, 2026
18	Jade Global	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 20, 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 20, 2026
19	Fincons Group	Indirect evidence	Vimercate, ItalyHQ checked Sep 20, 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 20, 2026
20	Gyansys INC	Indirect evidence	Carmel, IN, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,864 contacts →
	Indirect evidence “Founded in 2005, GyanSys is a leading global system integrator company supporting enterprise customers worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
21	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 20, 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 20, 2026
22	Infovision INC	Indirect evidence	Richardson, TX, United StatesHQ checked Sep 20, 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 20, 2026
23	Delaware Belux	Indirect evidence	Kortrijk, BelgiumHQ checked Sep 20, 2026	1,001-5,000	1,713 contacts →
	Indirect evidence “WHAT do we do?” Source: RevenueBase Database · checked Sep 20, 2026
24	Itransition Group	Indirect evidence	Decatur, GA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,664 contacts →
	Indirect evidence “Founded in 1998, Itransition is a global software engineering and IT consulting company with engineers supporting clients across 40 countries.” Source: RevenueBase Database · checked Sep 20, 2026
25	Quadrant Technologies	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 20, 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 20, 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 service providers. 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 service providers.
Partial evidence: Its own public description names part of implementation service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name implementation service providers. 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 25,195 implementation service providers worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 146,060 reachable decision-makers.

Free signup · no credit card

View the full list →

Implementation service providers worldwide at a glance

As of Sep 20, 2026

23.9%Verified-email coverage

24.3Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Hyderabad

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

10,547

11-50

9,445

51-200

3,752

201-500

903

501-1,000

269

1,001-5,000

168

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 service providers, 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 service providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “implementation service providers”. 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 service providers), 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 service providers, 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, 146,060 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 20, 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 service providers by location

126 lists · largest first

Every Implementation service providers 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 service providers, 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 service providers are there worldwide?

RevenueBase identified 25,195 implementation service providers 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 service providers?

The United States leads with 4,376 companies, followed by India (3,662) and Brazil (1,013). Every implementation service providers list by country and city is linked on this page.

Which city has the most implementation service providers?

Hyderabad leads with 417 headquartered companies, followed by Pune (304) and London (296).

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 146,060 verified decision-maker contacts tracked across these 25,195 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 25,195 implementation service providers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.