Tamtam Start free

List of companies with in-house R&D in Texas

Tamtam tracks 442 companies with in-house R&D headquartered in Texas. This list ranks the 100 largest by number of employees on LinkedIn, led by Oracle, AT&T and Dell Technologies. Their median headcount is 7,492. Half of them were founded in 1964 or later. The most common headquarters are Houston (27), Austin (17) and Dallas (12).

馃嚭馃嚫 Texas100 companiesUpdated Nov 11, 2026

This list showcases large corporations with in-house R&D operations across Texas, primarily focusing on technology, energy, and manufacturing sectors. Key players include Oracle, providing cloud infrastructure and AI solutions; AT&T, a telecommunications innovator; Dell Technologies, offering essential technology infrastructure; and SLB, developing advanced energy technologies. These companies represent a mix of established giants and significant employers.

The data reveals a strong concentration of headquarters in major Texan cities, particularly Houston, Dallas, and Austin. Houston stands out with several energy-related companies like SLB, Baker Hughes, Chevron, and Halliburton, alongside tech and manufacturing firms. This geographic clustering points to robust regional ecosystems supporting these industries.

#CompanyIndustryHeadquarters EmployeesFounded
1
Oracleoracle.com

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 馃嚭馃嚫 Austin 206,235 1977
2
AT&Tatt.com

Innovative company connecting people with technology to create a seamless, better life through network, products, services, and passionate employees

Telecommunications 馃嚭馃嚫 Dallas 193,793 n/a
3
Dell Technologiesdell.com

Provide essential technology infrastructure enabling organizations to transform and advance their digital futures through innovative solutions and support.

Computer Hardware Manufacturing 馃嚭馃嚫 Round Rock 133,530 1984
4
Hewlett Packard Enterprisehpe.com

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 馃嚭馃嚫 Houston 90,021 n/a
5
SLBslb.com

Global innovators developing advanced technologies to unlock energy access while reducing carbon emissions through sustainable engineering and diverse technical change maker expertise.

Technology, Information and Internet 馃嚭馃嚫 Houston 79,707 n/a
6
CBREcbre.com

A real estate company providing comprehensive services and insights to empower clients in maximizing opportunities and success in the industry

Real Estate 馃嚭馃嚫 Dallas 75,008 n/a
7
Baker Hughesbakerhughes.com

Energy technology company providing innovative solutions globally, focusing on safety, efficiency, and sustainability in the energy and industrial sectors

Energy Technology 馃嚭馃嚫 Houston 67,440 n/a
8
Caterpillar Inc.caterpillar.com

A global leader in manufacturing construction and mining equipment, engines, turbines, and locomotives, focused on sustainability and providing value to customers worldwide

Machinery Manufacturing 馃嚭馃嚫 Irving 62,810 1925
9
Halliburtonhalliburton.com

Collaborates to engineer solutions maximizing energy asset value, from locating hydrocarbons, managing data, drilling, evaluating, and constructing wells, to optimizing production.

Oil and Gas 馃嚭馃嚫 Houston 60,277 1919
10
Flexflex.com

Manufacturing partner supporting diverse customers in designing and building innovative products aimed at improving the world and daily life.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Austin 55,736 n/a
11
Chevronchevron.com

The company values its people and their innovation in tackling energy challenges, fostering open and respectful communication on LinkedIn

Oil and Gas 馃嚭馃嚫 Houston 55,495 n/a
12
Mary Kay Globalmarykay.com

A global beauty brand empowering women through innovative products, supporting independent contractors, and investing in science, sustainability, and social causes

Personal Care Product Manufacturing 馃嚭馃嚫 Addison 50,086 n/a
13
Kimberly-Clarkkimberly-clark.com

Manufacture and distribute trusted personal care and hygiene products globally, focusing on innovation, sustainability, and improving daily life.

Manufacturing 馃嚭馃嚫 Irving 35,192 n/a
14
Texas Instrumentsti.com

Design, manufacture, and sell analog and embedded processing chips for industrial, automotive, personal electronics, enterprise, and communications markets.

Semiconductor Manufacturing 馃嚭馃嚫 Dallas 33,476 n/a
15
Charles Schwababoutschwab.com

An investment services firm disrupting traditional Wall Street, offering brokerage, banking, and financial advisory services to improve the investing experience for clients

Financial Services 馃嚭馃嚫 Westlake 32,647 n/a
16
Baylor Scott & White Healthbswhealth.com

A Texas-based not-for-profit health system dedicated to providing accessible, integrated, and affordable healthcare through a wide network of facilities and services

Hospitals and Health Care 馃嚭馃嚫 Dallas 31,869 1903
17
Texas A&M Universitytamu.edu

Public university offering diverse research, military officer training, athletics, and hosting presidential library with strong community values and hospitality.

Higher Education 馃嚭馃嚫 College Station 30,552 1876
18
The University of Texas at Austinutexas.edu

A prestigious public university with a large campus, diverse academic programs, and a significant number of students, faculty, and staff

Higher Education 馃嚭馃嚫 Austin 26,268 1883
19
McKessonmckesson.com

A global healthcare organization dedicated to advancing health outcomes, providing insights, products, and services to make quality care accessible and affordable

Hospitals and Health Care 馃嚭馃嚫 Irving 24,993 n/a
20
NTT DATA North Americaus.nttdata.com

provides business and technology consulting, data and AI solutions, application development, infrastructure management, and industry-specific services globally

IT Services and IT Consulting 馃嚭馃嚫 Plano 24,414 n/a
21
UT MD Andersonmdanderson.org

A leading cancer center focused on patient care, research, education, and prevention, with top rankings in cancer care and a mission to #EndCancer

Hospitals and Health Care 馃嚭馃嚫 Houston 23,100 1944
22
Toyota North Americatoyota.com

Manufacturing high-quality vehicles while prioritizing people, career growth, and leading innovations in future mobility solutions for everyone.

Motor Vehicle Manufacturing 馃嚭馃嚫 Plano 22,666 1957
23
Houston Methodisthoustonmethodist.org

Comprehensive health system with hospitals, research institute, residency programs, outpatient and emergency care centers serving Greater Houston area.

Hospitals and Health Care 馃嚭馃嚫 Houston 22,002 n/a
24
Siemens Digital Industries Softwaresiemens.com

The company helps organizations digitally transform using Siemens Xcelerator platform, optimizing design, engineering, and manufacturing processes to create sustainable products

Software Development 馃嚭馃嚫 Plano 20,925 n/a
25
UT Southwestern Medical Centerutsouthwestern.edu

An academic medical center with top research, education, and patient care; offering training to students and providing specialized healthcare services

Hospitals and Health Care 馃嚭馃嚫 Dallas 19,275 1943
26
Cameron Productsslb.com

A leading provider of flow equipment products, systems, and services for the global oil, gas, and process industries, with a strong global network

Oil and Gas 馃嚭馃嚫 Houston 18,396 n/a
27
Infosys Ltdinfosys.com

Global leader in next-generation digital services and consulting, enabling clients worldwide to navigate digital transformation with AI-powered solutions and agile digital delivery for performance and customer satisfaction

IT Services and IT Consulting 馃嚭馃嚫 Tx 75082 17,979 1981
28
Oxyoxy.com

An international energy company with assets in the US, Middle East, and North Africa, focused on oil production, midstream services, chemical manufacturing, and carbon reduction technologies

Oil and Gas 馃嚭馃嚫 Houston 16,319 n/a
29
NetSuitenetsuite.com

A pioneering cloud-based company offering integrated business solutions including financials, ERP, inventory management, HR, and omnichannel commerce to global customers

Software Development 馃嚭馃嚫 Austin 15,622 1998
30
LyondellBaselllyondellbasell.com

Leading global chemical company producing innovative polymers and polyolefins for sustainable transportation, food safety, clean water, and healthcare applications.

Chemical Manufacturing 馃嚭馃嚫 Houston 15,172 2007
31
Phillips 66phillips66.com

A global energy company focused on manufacturing petroleum products, natural gas processing, and petrochemical production, prioritizing safety, honor, and commitment

Oil and Gas 馃嚭馃嚫 Houston 14,000 n/a
32
Oceaneeringoceaneering.com

Global technology company providing engineered services, products, and robotic solutions to offshore energy, defense, aerospace, and manufacturing industries worldwide

Oil and Gas 馃嚭馃嚫 Houston 13,838 1964
33
Baylor College of Medicinebcm.edu

Health sciences university in Texas Medical Center, conducting research, educating medical professionals, and providing healthcare locally and globally

Higher Education 馃嚭馃嚫 Houston 13,584 1900
34
Texas Children's Hospitaltexaschildrenspeople.org

Comprehensive pediatric care, groundbreaking research, family-centered women's health services, and a supportive work environment focused on community health.

Hospitals and Health Care 馃嚭馃嚫 Houston 13,069 1954
35
University of Houstonuh.edu

A public research university in Houston, offering over 250 academic programs to 46,000 students on campus and online, with 10,000 degrees awarded annually

Higher Education 馃嚭馃嚫 Houston 12,589 1927
36
The University of Texas Medical Branchutmb.edu

A major academic medical center in Galveston, Texas, offering schools of Medicine, Nursing, Health Professions, research, inpatient care, trauma center, and outpatient clinics

Hospitals and Health Care 馃嚭馃嚫 Galveston 12,118 1891
37
Texas Tech Universityttu.edu

A leading research institution with record enrollment numbers, fostering a culture of excellence through top-notch faculty and individual student focus

Higher Education 馃嚭馃嚫 11,651 n/a
38
Epsilonepsilon.com

It provides data-driven marketing solutions, enabling brands to engage consumers effectively across various channels using advanced technology and analytics.

Advertising Services 馃嚭馃嚫 Irving 11,146 n/a
39
Texas State Universitytxst.edu

Public university educating over 40,000 students through 200+ degree programs, focusing on innovation, economic growth, and community impact.

Higher Education 馃嚭馃嚫 San Marcos 9,678 1899
40
RealPage, Inc.realpage.com

Global provider of software and data analytics for the real estate industry, helping clients improve performance and increase returns with innovative solutions

Software Development 馃嚭馃嚫 Richardson 9,112 n/a
41
The University of Texas at Arlingtonuta.edu

A growing research powerhouse committed to discovery, innovative instruction, and community engagement, improving quality of life in Texas and beyond

Higher Education 馃嚭馃嚫 Arlington 9,020 1895
42
IKS Healthikshealth.com

Revitalizing clinician-patient relationships by relieving healthcare organizations of administrative burdens, enabling focus on delivering quality care through technology and expertise

Hospitals and Health Care 馃嚭馃嚫 Dallas 9,019 2006
43
Action Behavior Centers - ABA Therapy for Autismactionbehavior.com

Provide individualized ABA therapy, diagnostic support, parent training, and school readiness programs for children with autism across multiple states.

Mental Health Care 馃嚭馃嚫 Austin 8,869 2017
44
Bell Flightbellflight.com

Design and manufacture of helicopters and tiltrotor aircraft, pioneering aviation technology with a focus on safety and reliability.

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Fort Worth 8,859 1935
45
BMC Softwarebmc.com

It provides open, scalable solutions for complex IT challenges, helping organizations innovate and become Autonomous Digital Enterprises for future success.

IT Services and IT Consulting 馃嚭馃嚫 Houston 8,773 1980
46
UT Health San Antoniouthscsa.edu

Leading health sciences university in Texas with a strong focus on NIH funding, producing thousands of alumni in various health-related fields

Higher Education 馃嚭馃嚫 San Antonio 8,661 1959
47
Children's Healthjobsearch.childrens.com

A leading pediatric health care provider in North Texas, offering comprehensive services, innovative treatments, and groundbreaking research for children's health and wellness

Hospitals and Health Care 馃嚭馃嚫 Dallas 8,516 1913
48
NI (National Instruments)ni.com

The company engineers solutions using cutting-edge technology, automation, and software to help customers solve technology challenges and build better businesses

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Austin 7,971 1976
49
Tyler Technologiestylertech.com

Provides integrated software and technology services enabling government entities to operate efficiently, transparently, and connect data across systems.

Software Development 馃嚭馃嚫 Plano 7,873 n/a
50
Nabors Industriesnabors.com

Provider of advanced drilling rigs, automation, and engineering solutions for safe, efficient, and responsible energy production worldwide.

Oil and Gas 馃嚭馃嚫 Houston 7,492 1952

Want more companies than this list?

This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers.

Get more companies, free
51
Celanesecelanese.com

Global leader in chemistry, producing specialty material solutions for various industries through sustainable practices, innovation, and community involvement

Chemical Manufacturing 馃嚭馃嚫 Irving 7,348 1912
52
OneSubseaonesubsea.slb.com

A leading subsea technology provider focused on innovation to improve asset performance, increase energy efficiency, reduce emissions, and accelerate the energy transition

Oil and Gas 馃嚭馃嚫 Houston 7,149 2023
53
Lennoxlennox.com

A leading provider of climate control solutions for HVACR markets, focusing on innovation, energy efficiency, and a healthy environment with a diverse, engaged workforce

Manufacturing 馃嚭馃嚫 Richardson 7,132 1895
54
Huntsman Corporationhuntsman.com

A global chemical company focused on shaping a sustainable future through innovative products that enhance energy efficiency and reduce waste and emissions

Chemical Manufacturing 馃嚭馃嚫 The Woodlands 6,996 1970
55
American Bureau of Shipping (ABS)ww2.eagle.org

Establishes safety standards and technical solutions for marine and offshore industries through ship classification, engineering research, and global regulatory compliance support.

Maritime Transportation 馃嚭馃嚫 Spring 6,833 1862
56
Goodman Air Conditioning & Heatinggoodmanmfg.com

A leading HVAC manufacturer since 1982, providing reliable, high-quality, energy-efficient heating and cooling products designed and assembled in the USA

Manufacturing 馃嚭馃嚫 Waller 6,796 n/a
57
The University of Texas at El Pasoutep.edu

Leading Hispanic-serving university offering 171 degree programs Located in Texas, with majority Hispanic students, many first-generation college attendees Active on social media

Higher Education 馃嚭馃嚫 El Paso 6,675 1914
58
Westlakewestlake.com

Manufacturing and supplying petrochemicals, plastics, and building products globally, enhancing daily life through quality products and services.

Chemical Manufacturing 馃嚭馃嚫 Houston 6,574 1986
59
Epicorepicor.com

It provides innovative solutions tailored for hard-working businesses, helping them grow, transform, and improve productivity in their industries.

Software Development 馃嚭馃嚫 Austin 6,194 1972
60
ATIatimaterials.com

A global leader in materials science, providing solutions for extreme challenges in aerospace, defense, medical, and industrial applications worldwide

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Dallas 5,959 1996
61
NXP acquires Freescale Semiconductornxp.com

A company specializing in semiconductors previously known as Freeascale, Inc has been acquired by NXP Semiconductors Visit their page for updates

Semiconductor Manufacturing 馃嚭馃嚫 Austin 5,929 2004
62
Nateranatera.com

Global leader in cell-free DNA testing for oncology, women's health, and organ health Pioneering noninvasive testing to inform proactive treatment worldwide

Biotechnology Research 馃嚭馃嚫 Austin 5,791 2004
63
NESRnesr.com

Provides production services like fracturing, cementing, and coiled tubing, along with drilling and evaluation services including downhole tools and wireline, for oil and gas customers.

Oil and Gas 馃嚭馃嚫 Houston 5,457 2017
64
Texas Tech University Health Sciences Centerttuhsc.edu

A leading health sciences institution offering education, patient care, and research with campuses across West Texas, training thousands of healthcare professionals

Higher Education 馃嚭馃嚫 Lubbock 5,342 1969
65
FMC Technologiestechnipfmc.com

A global leader in the oil and gas industry, specializing in advanced technology and services for subsea, onshore, offshore, and surface projects

Oil and Gas 馃嚭馃嚫 Houston 4,841 2001
66
Epicor Softwareepicor.com

Providing tailored software solutions to manufacturing, delivery, and sales businesses, enhancing productivity, growth, and operational effectiveness.

Other 馃嚭馃嚫 Austin 4,802 1972
67
Hanger, Inc.corporate.hanger.com

Provides orthotic and prosthetic patient care, designs and manufactures devices, offers consulting and rehabilitative services nationwide.

Hospitals and Health Care 馃嚭馃嚫 Austin 4,737 1861
68
Chevron Phillips Chemical Companycpchem.com

Leading global manufacturer and supplier of olefins, polyolefins, aromatics, specialty chemicals, plastic piping, and polymer resins with extensive facilities.

Chemical Manufacturing 馃嚭馃嚫 Spring 4,704 2000
69
Daikin Comfortdaikincomfort.com

Leading global provider of heating and cooling solutions, improving environment and quality of life across over 140 countries worldwide.

Industrial Machinery Manufacturing 馃嚭馃嚫 Waller 4,475 1924
70
Siemens PLM Software (inactive)sw.siemens.com

Drives enterprise transformation, enabling digital engineering, manufacturing, electronics design. Solutions create digital twins providing insights, automation for innovation for companies.

Software Development 馃嚭馃嚫 Plano 4,233 n/a
71
University Healthuniversityhealth.com

A nationally recognized hospital and outpatient healthcare network in Bexar County, committed to patient-centered care, research, teaching, and innovation

Hospitals and Health Care 馃嚭馃嚫 San Antonio 4,152 1917
72
Ribbon Communicationsribboncommunications.com

Provides communications software, IP and optical networking solutions for service providers, enterprises, and critical infrastructure with modern, scalable, and secure technologies.

Telecommunications 馃嚭馃嚫 Plano 4,092 n/a
73
Texas Oncologytexasoncology.com

Pioneering provider of high-quality, community-based cancer care with over 530 physicians and 280 locations in Texas and Oklahoma Leading in innovative treatments and clinical trials

Hospitals and Health Care 馃嚭馃嚫 Dallas 4,017 1986
74
Trellixtrellix.com

Delivers intelligence-led cyber resilience for security-conscious organizations. Transforms threat intelligence into high-fidelity detections and automates AI-driven detection and response across diverse environments.

Computer and Network Security 馃嚭馃嚫 Plano 3,827 2022
75
Integer Holdings Corporationinteger.net

Provides contract development and manufacturing for medical devices, focusing on cardiac rhythm, neuromodulation, and cardio/vascular markets. Supplies innovative, high-quality products to medical companies.

Medical Equipment Manufacturing 馃嚭馃嚫 Plano 3,810 1940
76
SailPointsailpoint.com

Provides an identity security platform to manage and secure access to applications and data, defending against cyber threats and enhancing productivity for enterprises.

Software Development 馃嚭馃嚫 Austin 3,699 2005
77
Quest Softwarequest.com

Provides software solutions for data management, cybersecurity, and platform modernization, enabling organizations to build trusted foundations for AI success with speed and confidence.

Software Development 馃嚭馃嚫 Austin 3,567 n/a
78
Lamar Universitylamar.edu

A member of The Texas State University System offering over 100 programs leading to bachelor's, master's, and doctoral degrees

Higher Education 馃嚭馃嚫 Beaumont 3,430 1923
79
Omnicellomnicell.com

Transforming pharmacy care delivery with Advanced Services for central pharmacy, IV compounding, inventory optimization, and connecting settings of care with technology

Hospitals and Health Care 馃嚭馃嚫 Fort Worth 3,400 1992
80
o9 Solutions, Inc.o9solutions.com

The company specializes in providing faster, more intelligent planning and business decision-making solutions to help enterprises achieve their goals while using fewer resources

Software Development 馃嚭馃嚫 Dallas 3,278 2009
81
Hilti North Americahilti.com

Providing innovative tools, fasteners, software, and services to enhance construction speed, safety, and sustainability for professionals.

Construction 馃嚭馃嚫 Plano 3,241 1941
82
Dover Fueling Solutionsdoverfuelingsolutions.com

Provider of advanced energy dispensing equipment, automation systems, and payment solutions for global fueling and convenience retail customers Offers clean energy products and subscription services

Automation Machinery Manufacturing 馃嚭馃嚫 Austin 3,193 2016
83
Southwest Research Instituteswri.org

Independent nonprofit organization specializing in creating and transferring technology in engineering and physical sciences, with laboratories and facilities across multiple locations.

Research Services 馃嚭馃嚫 San Antonio 3,135 1947
84
Tokyo Electron UStel.com

Engineering, manufacturing, selling, and servicing wafer-processing, flat panel display, and thin-film silicon photovoltaic equipment worldwide.

Semiconductor Manufacturing 馃嚭馃嚫 Austin 3,086 1963
85
HKS, Inc.hksinc.com

A global architecture and design firm with a focus on sustainability, creativity, and delivering elegant solutions for clients and collaborators

Architecture and Planning 馃嚭馃嚫 Dallas 2,916 1939
86
TGStgs.com

Provides scientific energy data, advanced processing, analytics, and cloud-based applications to support companies in the energy sector.

Data Infrastructure and Analytics 馃嚭馃嚫 Houston 2,913 1981
87
Powellpowellind.com

Global manufacturer providing reliable power distribution systems, engineered electrical solutions, automation systems, and services to enhance safety and accessibility to electricity worldwide

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Houston 2,865 1947
88
SolarWindssolarwinds.com

Simplifying IT services to make operations run smoothly and effortlessly

Software Development 馃嚭馃嚫 Austin 2,856 1999
89
East Texas A&M Universitytamuc.edu

A university focused on individual success, providing support, personalized education, and opportunities for growth, preparing students for the marketplace

Higher Education 馃嚭馃嚫 Commerce 2,692 1889
90
Core Laboratoriescorelab.com

A global provider of reservoir description and production enhancement services, offering technologies to optimize reservoir performance and maximize hydrocarbon recovery

Oil and Gas 馃嚭馃嚫 Houston 2,667 1936
91
Silicon Labssilabs.com

A company specializing in secure, intelligent wireless technology to create a more connected world

Semiconductor Manufacturing 馃嚭馃嚫 Austin 2,579 1996
92
ALKEGENalkegen.com

Specialty materials leader for mission-critical systems in battery technologies, electric vehicles, filtration media, and insulation materials to promote sustainability and energy savings

Industrial Machinery Manufacturing 馃嚭馃嚫 Irving 2,527 n/a
93
Helen of Troycareers.helenoftroy.com

This company provides products found in homes improving everyday life, with a focus on inclusion and empowerment of talent

Manufacturing 馃嚭馃嚫 El Paso 2,416 1968
94
DJOenovis.com

Enovis, formerly DJO, specializes in medical technology, offering products for performance, mobility, surgical intervention, and post-operative rehabilitation through various brands.

Medical Equipment Manufacturing 馃嚭馃嚫 Dallas 2,241 1978
95
PROSpros.com

It provides AI-powered SaaS solutions for pricing, revenue management, and digital marketing, helping businesses optimize sales and drive growth.

Software Development 馃嚭馃嚫 Houston 2,214 n/a
96
Oil States Internationaloilstatesintl.com

A global products and services company serving the energy industry with manufactured equipment for drilling, completion, production, and infrastructure sectors worldwide Headquarters in Houston

Oil and Gas 馃嚭馃嚫 Houston 2,181 n/a
97
Mitratechmitratech.com

It provides technology solutions for corporate legal, risk, compliance, and HR professionals to enhance productivity, control expenses, and mitigate risks.

Software Development 馃嚭馃嚫 Bee Cave 2,094 n/a
98
Textron Systemstextronsystems.com

Innovative solutions provider to defense, homeland security, and aerospace sectors Specializing in unmanned aircraft, marine craft, armored vehicles, and intelligence software

Defense and Space Manufacturing 馃嚭馃嚫 Haslet 2,084 n/a
99
Vistance Networksvistancenetworks.com

Provides reliable communication technology solutions focused on performance, innovation, and customer-driven value for a dynamic global market.

Telecommunications 馃嚭馃嚫 Richardson 2,068 n/a
100
Ascend Performance Materialsascendmaterials.com

Global manufacturer specializing in nylon 6,6 materials for diverse applications including apparel, automotive parts, electronics, and industrial products.

Chemical Manufacturing 馃嚭馃嚫 Houston 2,065 2009

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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.

More company lists in Texas

The same list elsewhere in United States