Company lists · Data refreshed September 2026

Top 25 Managed service IT companies based in San Jose, United States

Name: Managed service IT companies based in San Jose, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 61 companies tracked

RevenueBase identified 61 managed service IT companies headquartered in San Jose, United States as of September 2026 and tracks 772 professional contacts across them, including 216 with verified work emails. New York is the largest hub.

This list covers managed service IT companies headquartered in San Jose, United States, 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.

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

61Companies

772Contacts tracked

216Verified emails

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

The 25 largest managed service IT companies based in San Jose, United States

Ranked by team size

Top 25 of 61 managed service IT companies based in San Jose, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to managed service IT 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	ZAG Technical Services	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	51-200	99 contacts →
	Partial evidence “ZAG Technical Services was founded in 1998 as a trusted IT adviser and partner to our clients.” Source: RevenueBase Database · checked Sep 21, 2026
2	Motivit	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	51-200	79 contacts →
	Strong evidence “MotivIT is a Silicon Valley-based, SOC 2 certified managed IT service provider delivering expert IT support, small business IT help, and global IT outsourcing solutions.” Source: RevenueBase Database · checked Sep 21, 2026
3	Progent	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	51-200	60 contacts →
	Partial evidence “National It Consulting - Onsite and Remote Support - Microsoft and Cisco Certified Experts - Windows, Linux, and Mac OS Technical Support - Network Security and Compliance - IT…” Source: RevenueBase Database · checked Sep 21, 2026
4	Advantel Networks	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “Advantel Networks is a premier technology solutions provider; designing, implementing and maintaining solutions for customers worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
5	Truadvantage	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	34 contacts →
	Strong evidence “TruAdvantage is a Bay Area-based, award-winning IT firm that specializes in managed IT, managed Cybersecurity, managed Compliance and Cloud solutions.” Source: RevenueBase Database · checked Sep 21, 2026
6	Stallion SI	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	23 contacts →
	Partial evidence “About Stallion SI Technologies Delivery-first IT engineering for secure, scalable, real-world environments Stallion SI Technologies is a delivery-first IT professional services…” Source: RevenueBase Database · checked Sep 21, 2026
7	UIS Technology Partners	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Since 1996, UIS Technology Partners has proven to be an industry leading provider of Information Technology services to small, mid-market, enterprise, and non-profit businesses…” Source: RevenueBase Database · checked Sep 21, 2026
8	BC Networks, INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Strong evidence “BC Networks is a leader in providing Managed IT Services, IT project delivery, cloud computing and cybersecurity solutions for small to mid-sized businesses with 25 to 200…” Source: RevenueBase Database · checked Sep 21, 2026
9	Cornerstone Technologies	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Partial evidence “Cornerstone Technologies has a history of innovation, a storied legacy of IT solutions, serving so many to date, and being trusted by some of the largest organizations in the…” Source: RevenueBase Database · checked Sep 21, 2026
10	Nevtec	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Strong evidence “Nevtec provides IT Managed & Consulting Services for small to medium sized businesses.” Source: RevenueBase Database · checked Sep 21, 2026
11	Axcelerate Networks INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
12	Accend Networks	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “WHO WE ARE An IT Network Consulting company specializing in network security, network design, implementation and support for Data, Wireless, and Voice networks.” Source: RevenueBase Database · checked Sep 21, 2026
13	ITQUE	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Strong evidence “ITque is a leading Managed IT Security & Services Provider specializing in network and data security.” Source: RevenueBase Database · checked Sep 21, 2026
14	Cloud 1 Solutions, INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	51-200	10 contacts →
	Strong evidence “Cloud 1 Solutions provides Managed IT and Security Services for your organization.” Source: RevenueBase Database · checked Sep 21, 2026
15	Caspian IT Group	Strong evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Strong evidence “Caspian IT Group is the leading Managed Service Provider providing Fortune 500 IT Solutions for small to medium-sized businesses.” Source: RevenueBase Database · checked Sep 21, 2026
16	Level UP MSP	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “Level Up MSP is a IT Solutions Provider based in San Jose, California.” Source: RevenueBase Database · checked Sep 21, 2026
17	Esudo Technology Solutions	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “Businesses of every size, in every industry, are increasingly dependent on technology.” Source: RevenueBase Database · checked Sep 21, 2026
18	Ophtek LLC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Ophtek provides office technology solutions for small to medium sized businesses.” Source: RevenueBase Database · checked Sep 21, 2026
19	Coast Range Technologies	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “Coast Range Technologies, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
20	Irvine Consulting Services, INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “For over 15 years, Irvine Consulting Services, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
21	Encose	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	11-50	4 contacts →
	Partial evidence “ENCOSE provides a full range of managed tactical and strategic business technology solutions with your current and future business needs in mind.” Source: RevenueBase Database · checked Sep 21, 2026
22	Irontouch Managed Services	Partial evidence	San Jose, United StatesHQ checked Sep 21, 2026	51-200	3 contacts →
	Partial evidence “Welcome Irontouch is an innovative, customer-focused provider who are committed to work with best in class solutions and partners to provide you with IT that will save you money…” Source: RevenueBase Database · checked Sep 21, 2026
23	Veltec Networks INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “Veltec Networks, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
24	Techteam2go	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “Full service IT professionals.” Source: RevenueBase Database · checked Sep 21, 2026
25	Guardnet, INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence 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: managed service IT 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 managed service IT companies.
Partial evidence: Its own public description names part of managed service IT companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name managed service IT 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 61 managed service IT companies based in San Jose, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 216 reachable decision-makers.

Free signup · no credit card

View the full list →

Managed service IT companies based in San Jose, United States at a glance

As of Sep 21, 2026

28.0%Verified-email coverage

12.7Average contacts per company

1-10Median size (employees)

596.7%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for San Jose, so it is reported there. Company counts and contact totals on this page are exact for San Jose, over 61 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 managed service IT 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 San Jose, United States whose own description of what they do matches “managed service IT 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 managed service IT 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 managed service IT companies, and records with no verified work email. Companies headquartered outside San Jose 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, 216 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.

Managed service IT companies by metro in the United States

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 managed service IT 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 managed service IT companies are there based in San Jose, United States?

RevenueBase identified 61 managed service IT companies headquartered in San Jose, United States 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?

ZAG Technical Services, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most managed service IT companies?

New York leads with 364 headquartered companies, followed by Houston (232) and Miami (149).

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 216 verified decision-maker contacts tracked across these 61 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.

Ready to reach these companies? Verified emails and direct dials for all 61 managed service IT companies based in San Jose, United States. Start with a free account, no credit card.

Download this list →

Related lists

Managed service IT companies by geography

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.