These Plano-based companies are involved in various technology sectors, with a strong presence in software development, telecommunications, and medical equipment manufacturing. The list includes large corporations like NTT DATA North America, which provides IT consulting and AI solutions, and Toyota North America, known for motor vehicle manufacturing. Siemens Digital Industries Software offers digital transformation tools, while Tyler Technologies specializes in software for government entities.
A notable pattern among these companies is their focus on advanced technological solutions. Many of them, such as Trellix in cybersecurity and Diodes Incorporated in semiconductor manufacturing, are key players in their respective fields, indicating Plano as a hub for diverse R&D activities across both established industries and newer tech ventures.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
NTT DATA North Americaus.nttdata.com
provides business and technology consulting, data and AI solutions, application development, infrastructure management, and industry-specific services globally |
24,414 | |||
| 2 |
Toyota North Americatoyota.com
Manufacturing high-quality vehicles while prioritizing people, career growth, and leading innovations in future mobility solutions for everyone. |
22,666 | |||
| 3 |
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 |
20,925 | |||
| 4 |
Tyler Technologiestylertech.com
Provides integrated software and technology services enabling government entities to operate efficiently, transparently, and connect data across systems. |
7,873 | |||
| 5 |
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. |
4,233 | |||
| 6 |
Ribbon Communicationsribboncommunications.com
Provides communications software, IP and optical networking solutions for service providers, enterprises, and critical infrastructure with modern, scalable, and secure technologies. |
4,092 | |||
| 7 |
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. |
3,827 | |||
| 8 |
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. |
3,810 | |||
| 9 |
Hilti North Americahilti.com
Providing innovative tools, fasteners, software, and services to enhance construction speed, safety, and sustainability for professionals. |
3,241 | |||
| 10 |
Communications & Power Industries (CPI)cpii.com
Global manufacturer of electronic components for communications and defense markets, specializing in innovative technology solutions for commercial and military applications worldwide |
1,612 | |||
| 11 |
ECI Telecomrbbn.com
Global communications software and network solutions provider for service providers, enterprises, and critical infrastructure sectors, offering innovative end-to-end solutions for modernizing networks |
1,513 | |||
| 12 |
Diodes Incorporateddiodes.com
Global semiconductor manufacturer providing high-quality products to automotive, industrial, computing, consumer electronics, and communications markets, with a focus on application-specific solutions |
1,303 | |||
| 13 |
Siemens Healthineerssiemens.com
Innovative team of engineers specialized in computer vision technology, focused on developing imaging systems for early cancer detection and breast density assessment |
1,020 | |||
| 14 |
Airspan Networksairspan.com
Provider of innovative software and hardware for 5G networks, pioneering in Open RAN solutions for seamless connectivity globally |
770 | |||
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. | |||||
| 15 |
Argon Medical Devices, Inc.argonmedical.com
Manufacturing specialty medical devices for interventional radiology, vascular surgery, interventional cardiology, and oncology, improving patient outcomes through image-guided procedures. |
742 | |||
| 16 |
Polestar Analyticspolestaranalytics.com
Specializing in analytics and AI, this organization helps businesses leverage data for valuable insights through a wide range of services |
693 | |||
| 17 |
Payoda Technology Incpayoda.com
Digital transformation partner offering technology solutions and services to global businesses with expertise in end-user research, design, engineering, and analytics Delivering scalable software solutions worldwide |
663 | |||
| 18 |
Silverfortsilverfort.com
Provides an end-to-end identity security platform, protecting all identities, human and machine, across on-premise and cloud environments, minimizing attack surfaces. |
634 | |||
| 19 | 610 | ||||
| 20 |
Imagine Communicationsimaginecommunications.com
The company develops technologies for media companies to deliver content anywhere, anytime, on any device using scalable, software-based solutions |
569 | |||
| 21 |
Softweb Solutions Inc. - An Avnet Companysoftwebsolutions.com
AI software development, IoT applications, data services, digital transformation, cognitive bots, extended reality, custom apps, enterprise mobility, marketing automation. |
420 | |||
| 22 |
Toyota Connected North Americatoyotaconnected.com
Development of connected automotive products and services enhancing mobility experiences, fostering innovation, and supporting a diverse, inclusive workplace culture. |
408 | |||
| 23 | 287 | ||||
| 24 |
Tvaranatvarana.com
Specializing in customizing, implementing, and enhancing cloud technology, particularly Salesforce, Netsuite, Amazon, and Heroku, to meet specific business needs |
204 | |||
| 25 |
Telaverge Communicationstelavergecommunications.com
Global provider of communications and technology solutions with strong engineering force in Texas and India, specializing in telecom products and solutions for worldwide operators |
176 | |||
| 26 |
KidKraftkidkraft.com
KidKraft crafts award-winning toys and furniture for children worldwide, blending classic play with modern technology to foster imagination and fun |
108 | |||
| 27 |
TMF Plastic Solutionstmfenterprises.com
Custom injection molding of plastic components and assemblies for consumer goods, durable goods, fitness, food service, communications, and OEM industries. |
85 | |||
| 28 |
Argent Associates, Inc.argentassociates.com
A global technology service provider offering cutting-edge solutions, R&D for edge computing, e-commerce platform, and community-focused initiatives for business growth |
24 | |||
| 29 |
Highpoint Design LLChptdesign.com
An established electrical/electronics manufacturer offering quality design and manufacturing services, specializing in industrial applications and advanced touch-based systems |
3 | |||
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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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The same list elsewhere in United States
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