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View K21 Communications's top competitors like 21CT, Inc., C2 Communication + Creative, and Impact 21.

Impact 21
Opportunities for Impact are Everywhere! Impact 21, a W. Capra company, is a consulting firm that enables specialty retail, convenience, and energy channels to deliver seamless customer experiences that drive new revenue growth and increased shareholder value. Our team of thought leaders and industry experts empower organizations to drive results through the alignment of people, systems, processes, and data.
Lexington, Kentucky, US
Private
$8M Revenue
http://www.impact21.com
10 Employees
21CT, Inc.
Headquartered in Austin since 1999, with an office in Washington, D.C., 21CT rewards the curious: we are innovators and creators of analytics products for anyone who seeks to shed light on the intelligence hidden within their data. We create investigative analytics products for the way users think, look, and find. Our innovative products and services are used to detect and neutralize healthcare fraud, target and eradicate network security attacks, and more. Reward your curiosity at 21ct.com.
Austin, Texas, US
Private
$17.5M Revenue
http://www.21ct.com
32 Employees
Optimum is an international strategic communications firm specialising in investor relations, corporate and financial communications. Our team of healthcare specialists, based in London and New York, have worked together for many years. Our first-hand experience of analysing, investing and writing about healthcare companies uniquely positions us when advising our clients on building a compelling investment story. Subscribe to our Optimum Perspectives Podcast, where we host industry leaders, and highlight the latest innovation and developments in life sciences. Listen here now: https://www.optimumcomms.com/podcast/
UK
Private
$1M Revenue
http://www.optimumcomms.com
23 Employees
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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