Company lists · Data refreshed September 2026

Top 25 Managed service providers based in San Jose, United States

Name: Managed service providers 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 5, 2026 45 companies tracked

RevenueBase identified 45 managed service providers headquartered in San Jose, United States as of September 2026 and tracks 748 professional contacts across them, including 216 with verified work emails. New York is the largest hub.

This list covers managed service providers 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

45Companies

748Contacts tracked

216Verified emails

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

Ranked by team size

Top 25 of 45 managed service providers based in San Jose, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed service providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ZAG Technical ServicesIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	99
	“ZAG Technical Services was founded in 1998 as a trusted IT adviser and partner to our clients.” Source: company website · checked Sep 5, 2026
2	MotivitStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	79
	“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: company website · checked Sep 5, 2026
3	OpalsoftIndirect evidence	San Jose, United StatesHQ checked Sep 5, 2026	51-200	63
	“Opal Soft is a professional services company focused in information technology.” Source: company website · checked Sep 5, 2026
4	ProgentIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	60
	“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: company website · checked Sep 5, 2026
5	Advantel NetworksIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	47
	“Advantel Networks is a premier technology solutions provider; designing, implementing and maintaining solutions for customers worldwide.” Source: company website · checked Sep 5, 2026
6	TruadvantageStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	34
	“TruAdvantage is a Bay Area-based, award-winning IT firm that specializes in managed IT, managed Cybersecurity, managed Compliance and Cloud solutions.” Source: company website · checked Sep 5, 2026
7	Stallion SIIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	23
	“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: company website · checked Sep 5, 2026
8	UIS Technology PartnersIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	21
	“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: company website · checked Sep 5, 2026
9	NevtecStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	16
	“Nevtec provides IT Managed & Consulting Services for small to medium sized businesses.” Source: company website · checked Sep 5, 2026
10	Accend NetworksIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	14
	“WHO WE ARE An IT Network Consulting company specializing in network security, network design, implementation and support for Data, Wireless, and Voice networks.” Source: company website · checked Sep 5, 2026
11	ITQUEStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	11
	“ITque is a leading Managed IT Security & Services Provider specializing in network and data security.” Source: company website · checked Sep 5, 2026
12	Cloud 1 Solutions, INCStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	51-200	10
	“Cloud 1 Solutions provides Managed IT and Security Services for your organization.” Source: company website · checked Sep 5, 2026
13	Caspian IT GroupStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	10
	“Caspian IT Group is the leading Managed Service Provider providing Fortune 500 IT Solutions for small to medium-sized businesses.” Source: company website · checked Sep 5, 2026
14	Esudo Technology SolutionsIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	7
	“Businesses of every size, in every industry, are increasingly dependent on technology.” Source: company website · checked Sep 5, 2026
15	Level UP MSPIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	7
	“Level Up MSP is a IT Solutions Provider based in San Jose, California.” Source: company website · checked Sep 5, 2026
16	Ophtek LLCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	6
	“Ophtek provides office technology solutions for small to medium sized businesses.” Source: company website · checked Sep 5, 2026
17	Coast Range TechnologiesIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	5
	“Coast Range Technologies, Inc.” Source: company website · checked Sep 5, 2026
18	Irvine Consulting Services, INCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	4
	“For over 15 years, Irvine Consulting Services, Inc.” Source: company website · checked Sep 5, 2026
19	EncoseStrong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	11-50	4
	“ENCOSE provides a full range of managed tactical and strategic business technology solutions with your current and future business needs in mind.” Source: company website · checked Sep 5, 2026
20	Irontouch Managed ServicesIndirect evidence	San Jose, United StatesHQ checked Sep 5, 2026	51-200	3
	“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: company website · checked Sep 5, 2026
21	Techteam2goIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	3
	“Full service IT professionals.” Source: company website · checked Sep 5, 2026
22	Veltec Networks INCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	3
	“Veltec Networks, Inc.” Source: company website · checked Sep 5, 2026
23	Guardnet, INCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	2
	Source: company website · checked Sep 5, 2026
24	NOR CAL IT SolutionIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	1-10	2
	“We're dedicated to transforming businesses through innovative technology solutions.” Source: company website · checked Sep 5, 2026
25	David LO Consulting LLCIndirect evidence	San Jose, United StatesHQ checked Sep 5, 2026	1-10	1
	“David Lo Consulting LLC provides information technology services to SMBs in the San Francisco Bay Area.” Source: company website · checked Sep 5, 2026

Showing 25 of 45 managed service providers based in San Jose, United States

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

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 287 HQs

Contacts with mobile numbers

Sep 5, 2026Data 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 this city, so it is reported there. Company counts and contact totals on this page are exact for San Jose, over 45 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 providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 providers”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among managed service providers, 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 an evidence 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 5, 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 providers by metro in the United States

Frequently asked

How many managed service providers are there based in San Jose, United States?

RevenueBase identified 45 managed service providers 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 providers?

New York leads with 287 headquartered companies, followed by Houston (202) and Chicago (132).

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 45 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 5, 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.