These South Carolina companies specialize in IT services and software development, with a notable presence in telecommunications and defense. The list includes a mix of established firms and mid-sized companies. Compucom, with 8,645 employees, provides IT solutions for digital workplaces. Mobile Communications America offers voice, data, and security solutions. ACS Technologies develops software for religious organizations, while TPM assists manufacturers with digital transformation.
A significant cluster of these companies, including Life Cycle Engineering, Atlas Tech, Technica LLC., ORBIS Inc, and Blue Acorn iCi, are headquartered in Charleston. Many of these firms also serve the Department of Defense, indicating a strong link between the local tech industry and government contracting.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Compucomcompucom.com
Compucom helps businesses unlock their digital workplace potential with secure, innovative, and sustainable IT solutions for real-time collaboration and support |
8,645 | |||
| 2 |
Mobile Communications Americacallmc.com
Leading integrator providing voice, data, and security solutions for workplace efficiency and safety, with a service-first approach and nationwide certified professionals |
1,347 | |||
| 3 |
ACS Technologiesacstechnologies.com
provides technology solutions and services for churches and religious organizations, supporting finances, communications, events, giving, and ministry management |
793 | |||
| 4 | 590 | ||||
| 5 |
Life Cycle Engineeringlce.com
Provides consulting, engineering, IT, and education solutions for private industry, government, and military, focusing on reliability, technology, engineering, and education services |
588 | |||
| 6 |
Atlas Techatlas-tech.com
A Veteran-Owned Small Business specializing in IT services, competing for Department of Defense contracts, with a focus on integrity and community impact |
324 | |||
| 7 |
Technica LLC.technicanow.com
Global provider of support solutions to the Defense Industry including maintenance, logistics, engineering, and IT services Currently hiring, visit our career page |
321 | |||
| 8 |
ORBIS Incorbisinc.net
A Veteran Owned Small Business providing engineering, technical, and consulting services to the Department of Defense with headquarters in Charleston, SC |
302 | |||
| 9 |
Blue Acorn iCiblueacornici.com
The company specializes in digital customer experience, analytics, digital commerce, and experience-driven commerce offerings to enhance interactions and drive business growth |
257 | |||
| 10 |
eGroup Enabling Technologiesegroup-us.com
A recognized leader in Data and AI, Cloud, Hybrid Cloud, Data Center, Security, and Managed Services, empowering businesses with expertise and solutions |
229 | |||
| 11 |
Pinnacle Consulting LLCpinnacleconsultingllc.com
IT solutions company offering tailored business processes, focusing on customer needs with accountable and adaptable solutions, emphasizing industry best practices and building lasting relationships |
225 | |||
| 12 |
Coursergocourser.com
Platform connecting technology service companies with resources and funding to support growth, collaboration, and long-term business success. |
215 | |||
| 13 |
Strategic Information Groupstrategic.com
Helping companies implement ERP, CRM, and Quality Management systems efficiently to maximize enterprise technology value and achieve corporate goals. |
152 | |||
| 14 |
TELECO, Inc.teleco.com
We provide tailored business technology solutions to drive productivity and success, offering services such as unified communications, video surveillance, and managed IT/cloud services |
144 | |||
| 15 |
KeyMarkkeymarkinc.com
Leading intelligent automation provider offering OCR, ECM, DCM, and RPA solutions to businesses and government organizations, leveraging AI and machine learning for increased productivity |
128 | |||
| 16 |
SYSTEMTECsystemtec.net
Professional technical consulting services for various industries, specializing in recruiting for enterprise solutions, application development, project management, and technical support Focused on client and candidate partnerships |
122 | |||
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| 17 |
Adapt Forwardadaptforward.com
Provides defensive security, NSA-certified red team, risk compliance, secure cloud, and custom cyber tools for government agencies. |
89 | |||
| 18 |
Fulminous Softwarefulminoussoftware.com
Offshoring consulting firm specializing in web, app development, DevOps, source code and blockchain management, offering client support for quality and timely execution |
55 | |||
| 19 |
PGT Solutionspgtsolutions.com
A service provider offering quality professional and technical services like enterprise architecture, IT services, project management, training, and organizational development |
31 | |||
| 20 |
Archetype SCarchetypesc.com
Providing innovative solutions for security, productivity, and user experience needs since 1998 Trusted by startups to Fortune 500 companies for tailored, collaborative services |
30 | |||
| 21 |
GP Technologies LLCgp-technologies.com
Delivering innovative technology solutions to enhance productivity, efficiency, and customer service, ensuring client success through excellence in service |
21 | |||
| 22 |
KRJ Consulting, LLCkrjconsulting.com
A consulting firm specializing in organizational development, program management, IT services, and coaching for government, corporate clients, and hosting networking events |
20 | |||
| 23 |
Grey Matter Solutions LLC (ENSTRAPP AMERICAS)greymattersolns.com
Global enterprise software & digital transformation company specializing in ERP, automation, mobility, IOT, data security, and consulting services for businesses worldwide |
19 | |||
| 24 |
ZettaPrime Inczettaprime.com
A technology consulting and systems support company founded in 2013, providing professional services, management consulting, staffing, and helping individuals and businesses unlock their potential |
15 | |||
| 25 |
Gregory Technologiesgregorytechnologies.com
This company specializes in providing customized IT services and solutions to optimize operations and support daily business functions |
14 | |||
| 26 |
HillSouthhillsouth.com
HillSouth partners with clients to provide world-class IT solutions, treating their problems as their own and always being there to meet changing technology needs |
11 | |||
| 27 |
Signin Technologies LLCsignintek.com
IT consulting company offering services to improve software design, develop digital strategies, and optimize software portfolios for digital transformation |
8 | |||
| 28 |
Smallworldsmallworldus.com
A global consulting firm focused on driving innovation and leadership in businesses worldwide through digital solutions and sustainable impact |
7 | |||
| 29 | 
EvenStreamsevenstreams.com
A Professional Services company specializing in architecture, implementing, and integrating data center, cloud, and transformation solutions for US customers |
6 | |||
| 30 |
Branch Technologiesbranchtec.com
Provider of enterprise-class IT solutions for small to medium-sized businesses in the Carolinas, offering managed services, backup & disaster recovery, Office 365/Exchange support, and hardware sales |
5 | |||
| 31 |
BoltAffectboltaffect.com
The company helps small businesses automate tasks to reduce overhead, engage employees in high-value work, and build custom software solutions |
4 | |||
| 32 |
NAB Solutions USnabsolutions.com
This company specializes in delivering powerful business solutions, focusing on Microsoft Dynamics 365 to support daily operations and streamline workflows for clients |
4 | |||
| 33 |
Hilton Technologies LLC.hiltontechnologies.com
A technology services company offering IT consulting, staffing, software and web development, digital marketing, and data analytics solutions for businesses worldwide |
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 12, 2026.
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