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Cisco
Cisco is the worldwide technology leader that is revolutionizing the way organizations connect and protect in the AI era. For more than 40 years, Cisco has securely connected the world. With its industry leading AI-powered solutions and services, Cisco enables its customers, partners and communities to unlock innovation, enhance productivity and strengthen digital resilience. With purpose at its core, Cisco remains committed to creating a more connected and inclusive future for all.
San Jose, California, US
Public
$53.8B Revenue
http://www.cisco.com
95.3K Employees
CSCO Ticker
Lumen Technologies
Lumen is the trusted network for the AI-powered world, connecting people, data, and applications through one of the world’s most expansive fiber networks. We enable secure, high-performance connectivity across cloud, edge, and AI workloads for enterprises, governments, and communities. Everything we do at Lumen takes advantage of our network strength. From metro connectivity to long-haul data transport to our edge cloud, security, and managed service capabilities, we meet our customers’ needs today and as they build the future.
Monroe, Louisiana, US
Private
$13.1B Revenue
http://www.lumen.com
49K Employees
RingCentral
RingCentral, Inc. (NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement management, video collaboration, and messaging. Powered by advanced AI capabilities, RingCentral delivers intelligence at every phase of the conversation journey — before, during, and after each human interaction. With RingCentral, businesses can work smarter, respond faster, and connect more meaningfully with their customers. Visit ringcentral.com to learn more. Our decades-long leadership in reliable and secure cloud communications has earned us the trust of nearly 600,000 customers and millions of users worldwide. RingCentral is headquartered in Belmont, California, and has offices around the world.
Belmont, California, US
Public
$2.4B Revenue
http://www.ringcentral.com
6.7K Employees
RNG Ticker
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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