Company lists · Data refreshed September 2026

Top 25 Legacy system modernization companies based in Vietnam

Name: Legacy system modernization companies based in Vietnam
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 181 companies tracked

RevenueBase identified 181 legacy system modernization companies headquartered in Vietnam as of September 2026 and tracks 5,103 professional contacts across them, including 405 with verified work emails. Hanoi is the largest hub.

This list covers legacy system modernization companies headquartered in Vietnam, 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.

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

181Companies

5,103Contacts tracked

405Verified emails

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The 25 largest legacy system modernization companies based in Vietnam

Ranked by team size

Top 25 of 181 legacy system modernization companies based in Vietnam, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization companies: 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	VMO	Indirect evidence	Hanoi, VietnamHQ checked Sep 20, 2026	1,001-5,000	766 contacts →
	Indirect evidence “VMO - a proud member of the ALTEN Group, a global leader in engineering and IT services with over employees worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
2	HPT Vietnam Corporation	Indirect evidence	Ho Chi Minh City, VietnamHQ checked Sep 20, 2026	201-500	533 contacts →
	Indirect evidence “Founded in 1995, HPT Vietnam Corporation has more than 30 years experience of mastering and implementing advanced ICT technologies for customers in Vietnam and worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
3	VTI	Indirect evidence	Me Tri Ha Urban Zone, VietnamHQ checked Sep 20, 2026	1,001-5,000	301 contacts →
	Indirect evidence “VTI is a trusted global technology company, turning innovation into lasting value by harnessing AI and advanced technologies.” Source: RevenueBase Database · checked Sep 20, 2026
4	Endava Vietnam	Indirect evidence	Ho Chi Minh City, VietnamHQ checked Sep 20, 2026	10001+	249 contacts →
	Indirect evidence “For over two decades, we have been harnessing technology to drive meaningful change.” Source: RevenueBase Database · checked Sep 20, 2026
5	Hitachi Digital Services Vietnam	Indirect evidence	Minh City, VietnamHQ checked Sep 20, 2026	1,001-5,000	238 contacts →
	Indirect evidence “Hitachi Digital Services Vietnam (formerly known as Global CyberSoft) is a leading global IT solutions provider founded in California in July We have many years of experience…” Source: RevenueBase Database · checked Sep 20, 2026
6	AHT Tech	Indirect evidence	Hanoi, VietnamHQ checked Sep 20, 2026	201-500	230 contacts →
	Indirect evidence “A global software development and IT solutions company specializing in digital commerce and customer experience.” Source: RevenueBase Database · checked Sep 20, 2026
7	Gimasys Co., LTD	Indirect evidence	Hanoi, VietnamHQ checked Sep 20, 2026	51-200	180 contacts →
	Indirect evidence “Gimasys is a leading provider of enterprise digital transformation solutions, delivering innovative digital, data, and AI technologies into comprehensive business ecosystems.” Source: RevenueBase Database · checked Sep 20, 2026
8	Ekino Vietnam	Indirect evidence	Ho Chi Minh City, VietnamHQ checked Sep 20, 2026	51-200	105 contacts →
	Indirect evidence “As a member of the Havas Group, Ekino is a digital and AI consulting and engineering firm founded in 2010, bringing together over 600 experts across five offices worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
9	NEW Ocean IS Co., LTD	Indirect evidence	Ho Chi Minh, VietnamHQ checked Sep 20, 2026	51-200	89 contacts →
	Indirect evidence “Since 2010, NOIS has been specializing in transforming and accelerating business operations with cutting-edge IT services tailored to your needs, including- Azure cloud-based…” Source: RevenueBase Database · checked Sep 20, 2026
10	Rikai 株式会社	Indirect evidence	Thanh Khe, VietnamHQ checked Sep 20, 2026	201-500	88 contacts →
	Indirect evidence “RIKAI2017SIerDX RIKAI TechnologyDX IT MVP AIIoT DevOps 7 300SE 600 95% ISO 27001 4050% 2 SIer345% 6MVPA EC” Source: RevenueBase Database · checked Sep 20, 2026
11	Evotek	Indirect evidence	Cau Giay, VietnamHQ checked Sep 20, 2026	201-500	72 contacts →
	Indirect evidence “Evotek is a software development company based in Hanoi, Vietnam.” Source: RevenueBase Database · checked Sep 20, 2026
12	Cloudgo	Indirect evidence	Hcmc, VietnamHQ checked Sep 20, 2026	51-200	69 contacts →
	Indirect evidence “CÔNG TY TNHH CÔNG NGHỆ CLOUDGO (CLOUDGO) Được thành lập từ 12/2010 theo SĐKKD: 0310534347 (cấp ngày 23/12/2010).” Source: RevenueBase Database · checked Sep 20, 2026
13	Haposoft	Indirect evidence	Hanoi, VietnamHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence “Established in 2016, Haposoft is a trusted Vietnamese IT solutions company with a global presence, serving clients from Japan, Singapore, Germany, and beyond.” Source: RevenueBase Database · checked Sep 20, 2026
14	Zen8labs	Indirect evidence	Hanoi, VietnamHQ checked Sep 20, 2026	51-200	44 contacts →
	Indirect evidence “zen8labs is a pioneer in the IT consulting field, particularly for the healthcare, education & financial industries.” Source: RevenueBase Database · checked Sep 20, 2026
15	Extreme Vietnam	Indirect evidence	Ha Noi, VietnamHQ checked Sep 20, 2026	51-200	44 contacts →
	Indirect evidence “CEO 2013913 USD 150 6033 DX Web AI IoT CMMI Company Overview Company Name: Extreme Vietnam Co, Lyd CEO: Yuji Soeda Established: September 2013 (13th fiscal year) Capital: USD…” Source: RevenueBase Database · checked Sep 20, 2026
16	Inter-K JSC	Indirect evidence	Tan My Ward, VietnamHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “Inter-K is a technology company focused on transforming the way organizations operate through smart, scalable solutions.” Source: RevenueBase Database · checked Sep 20, 2026
17	Hamsa Corporation	Indirect evidence	Phường Yên Hòa, VietnamHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “We Are Youth – Friendliness – Flexibility Hamsa Corporation is digital transformation provider in Vietnam established in 2014.” Source: RevenueBase Database · checked Sep 20, 2026
18	osam.io	Indirect evidence	Hanoi, VietnamHQ checked Sep 20, 2026	11-50	37 contacts →
	Indirect evidence “OSAM is a bold team of Solution Architects and DevOps engineers with hunger for challenges and thirst for coffee.” Source: RevenueBase Database · checked Sep 20, 2026
19	Hiptech Co.,ltd	Indirect evidence	Ho Chi Minh, VietnamHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “Hiptech Solution Corporation was established in 2020 as an IT Solution Provider.” Source: RevenueBase Database · checked Sep 20, 2026
20	Nexlab Technology	Indirect evidence	Ho Chi Minh, VietnamHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Where your journey to digital transformation seems intimidating, we love to help.” Source: RevenueBase Database · checked Sep 20, 2026
21	Bkplus Software	Indirect evidence	Phường Nhân Chính, VietnamHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “BKPlus Software was founded in 2017.” Source: RevenueBase Database · checked Sep 20, 2026
22	Trinity Technology	Indirect evidence	Hà Nội, VietnamHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Trinity Technology is a trusted tech partner providing consulting and IT outsourcing services helping businesses worldwide drive digital transformation with confidence.” Source: RevenueBase Database · checked Sep 20, 2026
23	Teamwork Vietnam LTD	Indirect evidence	Ho-chi-minh City, VietnamHQ checked Sep 20, 2026	501-1,000	24 contacts →
	Indirect evidence “Strategic partner in digital transformation, TeamWork is involved in four core businesses: Business Consulting, SAP Business Solutions, Technology Platforms and Data Analytics.” Source: RevenueBase Database · checked Sep 20, 2026
24	Datatyk	Indirect evidence	Ho Chi Minh City, VietnamHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “DATATYK accelerates your digital transformation journey by providing the next-generation of technologies and platforms to help you unlock innovation in the agile market change.” Source: RevenueBase Database · checked Sep 20, 2026
25	Wolf Solutions	Indirect evidence	Ho Chi Minh City, VietnamHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Wolf Solutions is a leading business & technology consulting firm with more than 11 years of experience in the fields of Digital Transformation, CRM & ERP, Application development…” 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: legacy system modernization companies. 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 legacy system modernization companies.
Partial evidence: Its own public description names part of legacy system modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy system modernization companies. 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 181 legacy system modernization companies based in Vietnam

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Legacy system modernization companies based in Vietnam at a glance

As of Sep 20, 2026

7.9%Verified-email coverage

28.2Average contacts per company

11-50Median size (employees)

26.0%Largest-city concentration · Hanoi

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Vietnam, so it is reported there. Company counts and contact totals on this page are exact for Vietnam, over 181 companies.

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 legacy system modernization companies, 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.
What qualifies: Companies headquartered in Vietnam whose own description of what they do matches “legacy system modernization companies”. 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 legacy system modernization companies), 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 legacy system modernization companies, and records with no verified work email. Companies headquartered outside Vietnam are excluded even when they keep an office there.
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, 405 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.

Legacy system modernization companies by metro

Legacy system modernization companies in Hanoi47
Legacy system modernization companies in Ho Chi Minh City39

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 legacy system modernization companies, 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 legacy system modernization companies are there based in Vietnam?

RevenueBase identified 181 legacy system modernization companies headquartered in Vietnam 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?

VMO, headquartered in Hanoi, tops this list with the largest team on record.

Which city has the most legacy system modernization companies?

Hanoi leads with 47 headquartered companies, followed by Ho Chi Minh City (39) and Ho Chi Minh (23).

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 405 verified decision-maker contacts tracked across these 181 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.

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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.