# The 50 largest managed service providers in Texas

Tamtam tracks 83 managed service providers headquartered in Texas. This list ranks the 50 largest by number of employees on LinkedIn, led by Oracle, Hewlett Packard Enterprise and NTT DATA North America. Their median headcount is 583. Half of them were founded in 2004 or later. The most common headquarters are Austin (13), Houston (9) and Plano (6).

This selection of managed service providers in Texas primarily includes large IT services and consulting firms. Companies such as Oracle, Hewlett Packard Enterprise, and NTT DATA North America offer extensive cloud infrastructure, data and AI solutions, and global technology services. These firms mostly serve enterprise clients with complex needs.

A significant number of these companies are concentrated in major Texan cities. Austin, Dallas, and Houston emerge as key hubs, hosting several large employers like Digital Realty, GDT - General Datatech, and Searce Inc. This geographic clustering suggests a strong regional presence of technology and IT consulting businesses.

🇺🇸 Texas · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Oracle](https://www.tamtam.ai/c/oracle) (oracle.com)<br>Delivers cloud infrastructure, data, and applications for AI, offering scalable solutions for various deployments, integrating AI into databases, data platforms, and business applications. | IT Services and IT Consulting | 🇺🇸 Austin | 206,235 | 1977 |
| 2 | [Hewlett Packard Enterprise](https://www.tamtam.ai/c/hewlett-packard-enterprise) (hpe.com)<br>This company is a global edge-to-cloud company that drives technology and innovation to fulfill its passion and purpose | IT Services and IT Consulting | 🇺🇸 Houston | 90,021 |  |
| 3 | [NTT DATA North America](https://www.tamtam.ai/c/ntt-data-north-america) (us.nttdata.com)<br>provides business and technology consulting, data and AI solutions, application development, infrastructure management, and industry-specific services globally | IT Services and IT Consulting | 🇺🇸 Plano | 24,414 |  |
| 4 | [Rackspace Technology](https://www.tamtam.ai/c/rackspace-technology) (rackspace.com)<br>Specializing in multicloud solutions, we assist global companies in overcoming challenges by providing custom cloud services for improved performance | IT Services and IT Consulting | 🇺🇸 San Antonio | 7,046 | 1998 |
| 5 | [Black Box](https://www.tamtam.ai/c/black-box) (blackbox.com)<br>Provides network integration, managed services, technology products, and cybersecurity solutions to global enterprises across multiple industries and regions. | IT Services and IT Consulting | 🇺🇸 Plano | 5,521 | 1976 |
| 6 | [Digital Realty](https://www.tamtam.ai/c/digital-realty) (digitalrealty.com)<br>Global provider of data center, colocation, and interconnection solutions, enabling secure connectivity between companies through a network of 300+ facilities worldwide | IT Services and IT Consulting | 🇺🇸 Austin | 5,263 |  |
| 7 | [MOURI Tech](https://www.tamtam.ai/c/mouri-tech) (mouritech.com)<br>Global Enterprise Solutions Provider partnering with Fortune 500 companies, offering innovative services in enterprise transformation, cloud strategy, analytics, and application development | IT Services and IT Consulting | 🇺🇸 Irving | 3,521 | 2005 |
| 8 | [NinjaOne](https://www.tamtam.ai/c/ninjaone) (ninjaone.com)<br>Provides automated management, patching, and visibility for endpoints, ensuring security and efficiency for organizations of all sizes worldwide. | Software Development | 🇺🇸 Austin | 2,376 |  |
| 9 | [TTEC Digital](https://www.tamtam.ai/c/ttec-digital) (ttecdigital.com)<br>A global leader in customer experience orchestration, leveraging technology and empathy with expertise in CX strategy, data analytics, and AI | IT Services and IT Consulting | 🇺🇸 Austin | 1,983 |  |
| 10 | [IT Convergence](https://www.tamtam.ai/c/it-convergence) (itconvergence.com)<br>Global Oracle Platinum Partner offering cloud consulting, managed services, integration, analytics, automation, training, and change management for enterprises. | IT Services and IT Consulting | 🇺🇸 Irving | 1,773 | 1998 |
| 11 | [Searce Inc](https://www.tamtam.ai/c/searce-inc) (searce.com)<br>A company focused on refining, analyzing, and improving to deliver intelligent, impactful, and futuristic business outcomes through passionate employees | Business Consulting and Services | 🇺🇸 Houston | 1,587 | 2004 |
| 12 | [GDT - General Datatech](https://www.tamtam.ai/c/gdt-general-datatech) (gdt.com)<br>An international IT solutions provider offering consulting, designing, deploying, and managing services for businesses, government, and healthcare, specializing in advanced technology solutions | IT Services and IT Consulting | 🇺🇸 Dallas | 1,317 | 1996 |
| 13 | [Programmers.io](https://www.tamtam.ai/c/programmers-io) (programmers.io)<br>Global technology company specializing in IBM i and IBM Z modernization, offering AI enablement, cloud migration, and application development with a happiness guarantee. | IT Services and IT Consulting | 🇺🇸 Dallas | 1,237 | 2012 |
| 14 | [Flō Networks](https://www.tamtam.ai/c/flo-networks) (flo.net)<br>Flō Networks provides high-performance network services for organizations, offering scalable, transparent architecture for configuring and managing services across networks | Telecommunications | 🇺🇸 El Paso | 1,227 | 2001 |
| 15 | [WP Engine](https://www.tamtam.ai/c/wp-engine) (wpengine.com)<br>This company provides managed WordPress hosting, eCommerce solutions, and enterprise offerings globally, empowering companies and agencies to create digital experiences | IT Services and IT Consulting | 🇺🇸 Austin | 1,093 | 2010 |
| 16 | [R Associates Inc](https://www.tamtam.ai/c/r-associates-inc) (r-associates.com)<br>RAI provides high performance computers, hardware, support, and professional services to global Oil and Gas companies, with competitive prices and up-to-date server integration | Computer Hardware Manufacturing | 🇺🇸 Houston | 1,091 |  |
| 17 | [CyrusOne](https://www.tamtam.ai/c/cyrusone) (cyrusone.com)<br>Global data center developer and operator offering state-of-the-art digital infrastructure solutions to nearly 1,000 customers, including Fortune 1000 companies, worldwide | IT Services and IT Consulting | 🇺🇸 Dallas | 1,014 | 2000 |
| 18 | [TPx](https://www.tamtam.ai/c/tpx) (tpx.com)<br>Provides managed IT, cybersecurity, and networking services with continuous support, eliminating vendor complexity for growing businesses. | IT Services and IT Consulting | 🇺🇸 Austin | 991 |  |
| 19 | [DataBank](https://www.tamtam.ai/c/databank) (databank.com)<br>Provider of enterprise-class data center, cloud, and interconnection services with 100% uptime availability, offering managed technology solutions for improved performance and risk management | IT Services and IT Consulting | 🇺🇸 Dallas | 958 | 2005 |
| 20 | [AT&T Cybersecurity](https://www.tamtam.ai/c/at-and-t-cybersecurity) (att.com)<br>Specializing in cybersecurity, this company offers edge-to-edge technologies, threat intelligence, collaborative defense, and tailored solutions to protect businesses worldwide | Computer and Network Security | 🇺🇸 Dallas | 881 |  |
| 21 | [Buchanan Technologies](https://www.tamtam.ai/c/buchanan-technologies) (buchanan.com)<br>Leading IT consulting and outsourcing firm offering a wide range of technology services, from managed operations and cybersecurity to digital workplace solutions and IT staffing | IT Services and IT Consulting | 🇺🇸 Grapevine | 783 | 1988 |
| 22 | [Quisitive](https://www.tamtam.ai/c/quisitive) (quisitive.com)<br>Global Microsoft partner delivering cloud solutions, custom technologies, and first-party offerings to drive enterprise digital transformation and innovation. | IT Services and IT Consulting | 🇺🇸 Irving | 754 | 2016 |
| 23 | [Csquare](https://www.tamtam.ai/c/csquare) (csquare.com)<br>A Dallas-based company offers colocation and data center services emphasizing connectivity, security, and redundancy for diverse clientele's digital transformation needs | IT Services and IT Consulting | 🇺🇸 Coppell | 752 | 2019 |
| 24 | [Meriplex](https://www.tamtam.ai/c/meriplex) (meriplex.com)<br>A provider of managed technology solutions specializing in Intelligent WAN, Cybersecurity, Physical Security, Cloud, and Voice services for enabling business transformation and growth | IT Services and IT Consulting | 🇺🇸 Houston | 587 |  |
| 25 | [NETSYNC](https://www.tamtam.ai/c/netsync) (netsync.com)<br>Specializes in comprehensive IT lifecycle solutions, partnering with leading tech firms to serve education, government, and corporate sectors. | IT Services and IT Consulting | 🇺🇸 Houston | 583 | 2002 |
| 26 | [VCE](https://www.tamtam.ai/c/vce) (dell.com)<br>The company focuses on evolving IT through converged solutions, accelerating adoption of cloud computing while reducing costs and improving time to market | IT Services and IT Consulting | 🇺🇸 Richardson | 561 | 2009 |
| 27 | [CMIT Solutions](https://www.tamtam.ai/c/cmit-solutions) (cmitsolutions.com)<br>A premier IT solution provider delivering enterprise-class support and technology services for businesses in North America, ensuring efficient and reliable IT environments | IT Services and IT Consulting | 🇺🇸 Austin | 552 | 1996 |
| 28 | [Aligned Data Centers](https://www.tamtam.ai/c/aligned-data-centers) (aligneddc.com)<br>Leading technology firm specializing in sustainable Scale Data Centers and Build-to-Scale solutions for global hyperscale and enterprise clients | IT Services and IT Consulting | 🇺🇸 Plano | 550 | 2013 |
| 29 | [OneSupport](https://www.tamtam.ai/c/onesupport) (onesupport.com)<br>Provider of customer experience, technical support, and sales enablement solutions for technology products Helps companies improve customer care strategies and IT consulting solutions | IT Services and IT Consulting | 🇺🇸 San Marcos | 547 | 1993 |
| 30 | [Dominion Systems Inc](https://www.tamtam.ai/c/dominion-systems-inc) (dominionsystems.net)<br>The company specializes in software development, testing, infrastructure management, and providing cloud computing solutions to clients | IT Services and IT Consulting | 🇺🇸 Texas | 532 | 2005 |
| 31 | [Excelencia](https://www.tamtam.ai/c/excelencia) (excelenciaconsulting.com)<br>Excelencia is an ISO-certified IT solutions company with 15+ years of experience, offering innovative and tailor-made solutions globally using offshore and on-site models | IT Services and IT Consulting | 🇺🇸 Austin | 504 | 2005 |
| 32 | [Computer Solutions](https://www.tamtam.ai/c/computer-solutions) (comsoltx.com)<br>An IT solutions provider in South Texas offering products from leading vendors, professional services, managed services, and consulting in technology | IT Services and IT Consulting | 🇺🇸 San Antonio | 500 | 1978 |
| 33 | [Masergy](https://www.tamtam.ai/c/masergy) (masergy.com)<br>Provides AI-powered secure cloud networking solutions including SD-WAN, security, unified communications, and contact center services for global businesses. | IT Services and IT Consulting | 🇺🇸 Plano | 497 |  |
| 34 | [TECH MAHINDRA AMERICAS](https://www.tamtam.ai/c/tech-mahindra-americas)<br>An IT and services company located in Texas, specializing in providing information technology solutions and support to clients in the Americas | IT Services and IT Consulting | 🇺🇸 Plano | 474 |  |
| 35 | [INFOLOB](https://www.tamtam.ai/c/infolob) (infolob.com)<br>An IT consulting organization specializing in Oracle Cloud migration, managed services, data management, hardware/software resale, ERP apps, UI/UX design, and more | IT Services and IT Consulting | 🇺🇸 Irving | 406 | 2009 |
| 36 | [Telnyx](https://www.tamtam.ai/c/telnyx) (telnyx.com)<br>Provides a full-stack platform for real-time conversational AI, combining global telephony, dedicated AI infrastructure, and customizability for building and deploying AI-powered agents. | Software Development | 🇺🇸 Austin | 383 | 2009 |
| 37 | [LOGIX FIBER NETWORKS](https://www.tamtam.ai/c/logix-fiber-networks) (logix.com)<br>A Texas-based provider of secure fiber-based data and voice services for enterprise and carrier customers, known for outstanding customer service and quick service delivery | Telecommunications | 🇺🇸 Houston | 380 | 1983 |
| 38 | [Netrio](https://www.tamtam.ai/c/netrio) (netrio.com)<br>A fast-growing MSP / MSSP since 2003, delivering Managed IT and Security solutions through NOCaaS, SOC, and professional services Operates three NOCs & SOCs in Texas | IT Services and IT Consulting | 🇺🇸 McKinney | 365 | 2003 |
| 39 | [Resolve Tech Solutions](https://www.tamtam.ai/c/resolve-tech-solutions) (resolvetech.com)<br>Global IT services company specializing in ERP consulting, cloud migration, managed cloud delivery, and advanced technologies for diverse industries. | IT Services and IT Consulting | 🇺🇸 Addison | 364 | 2010 |
| 40 | [DYOPATH](https://www.tamtam.ai/c/dyopath) (dyopath.com)<br>Empowering organizations with trusted IT solutions, managing risk, technology, and personnel, while combating cyber threats and complex IT environments, all with exceptional customer service. | IT Services and IT Consulting | 🇺🇸 Houston | 364 | 1994 |
| 41 | [Scale Computing](https://www.tamtam.ai/c/scale-computing) (scalecomputing.com)<br>Provides an edge-first platform for distributed enterprises, offering solutions for edge computing, managed network security, and virtualization to power critical applications across many locations. | Software Development | 🇺🇸 Austin | 362 | 2007 |
| 42 | [Impiger Technologies Inc](https://www.tamtam.ai/c/impiger-technologies-inc) (impigertech.com)<br>It specializes in mobile, cloud, web, IoT, AR, RPA, and AI technologies, serving various industries with numerous successful projects. | IT System Custom Software Development | 🇺🇸 Austin | 333 | 2004 |
| 43 | [Zerto, acquired by Hewlett Packard Enterprise company in 2021](https://www.tamtam.ai/c/zerto-acquired-by-hewlett-packard-enterprise-company-in-2021) (hpe.com)<br>Provider of cloud data management and protection solutions enabling seamless application protection, recovery, and mobility across on-premises and cloud environments for global customers | Software Development | 🇺🇸 Spring | 332 | 2009 |
| 44 | [Apogee, Inc.](https://www.tamtam.ai/c/apogee-inc) (apogee.us)<br>The company helps colleges and universities transition to the digital era with managed technology services, enhancing learning outcomes and student satisfaction | IT Services and IT Consulting | 🇺🇸 Austin | 330 | 1998 |
| 45 | [AMSYS Innovative Solutions](https://www.tamtam.ai/c/amsys-innovative-solutions) (amsysis.com)<br>Provides cybersecurity, IT support, cloud backup, data center operations, and disaster recovery planning for energy, healthcare, and financial sectors. | IT Services and IT Consulting | 🇺🇸 Houston | 326 | 2003 |
| 46 | [Cognisive](https://www.tamtam.ai/c/cognisive) (cognisive.com)<br>An esteemed IT consulting firm specializing in technology deployment, infrastructure automation, and end-to-end IT support for leading organizations across industries | IT Services and IT Consulting | 🇺🇸 Houston | 320 | 2008 |
| 47 | [Compass Datacenters](https://www.tamtam.ai/c/compass-datacenters) (compassdatacenters.com)<br>Designs and constructs sustainable data centers for hyperscalers and cloud providers globally, focusing on innovation, quality, and efficient operations | IT Services and IT Consulting | 🇺🇸 Dallas | 295 | 2011 |
| 48 | [FalconStor Software](https://www.tamtam.ai/c/falconstor-software) (falconstor.com)<br>FalconStor modernizes disaster recovery and backup operations for hybrid cloud environments, reducing data storage costs by up to 95% | Software Development | 🇺🇸 Austin | 290 | 2000 |
| 49 | [The 20 MSP](https://www.tamtam.ai/c/the-20-msp) (the20.com)<br>Results-oriented business development group for IT Industry, providing scalable growth solutions for Managed Service Providers through sales models, expertise, and resources | IT Services and IT Consulting | 🇺🇸 Plano | 266 | 2013 |
| 50 | [Formerly Cyxtera (now Csquare)](https://www.tamtam.ai/c/formerly-cyxtera-now-csquare) (csquare.com)<br>Global leader in data center colocation and interconnection services with a footprint of 61 centers in 29 markets worldwide Serving enterprises and government agencies | IT Services and IT Consulting | 🇺🇸 Coppell | 258 | 2017 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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Source: https://www.tamtam.ai/l/managed-service-providers-texas