19 signals in the last 90 days
Side-by-Side Comparison
| Metric | CallTower | Zoom |
|---|---|---|
| Founded | ||
| Founded | 2002 older | 2013 |
| Headquarters | ||
| Headquarters | South Jordan, United States | San Jose, United States |
| Employees | ||
| Employees | 248 | 13825 larger |
| Industry | ||
| Industry | Messaging, Telecom | Information Technology, Messaging, Messaging and Telecommunications |
| Funding Stage | ||
| Funding Stage | Private Equity | Not Funded/Unknown |
| Total Funding | ||
| Total Funding | Not tracked yet | $276.00M |
| Funding Rounds | ||
| Funding Rounds | 2 | 10 |
| Services | ||
| Services | Unified Communications as a Service (UCaaS), Contact Center as a Service (CCaaS), Collaboration and Integration Solutions, AI-Driven Communication Technologies, 24/7/365 Support | Meetings, Webinars & Events, Contact Center, Zoom AI, API Services, ZoomMate |
| Target Customers | ||
| Target Customers | Enterprises seeking advanced communication solutions, Organizations transitioning from legacy telephony systems, Businesses requiring seamless integration with Microsoft and Cisco platforms, Companies in need of global voice and network connectivity | Small and Midsize Businesses, Enterprises, Healthcare Industry, Education Sector, Government Agencies, Sales and Revenue Teams |
| Taxonomy | ||
| Taxonomy | Cloud Communication, Collaboration Solutions, Enterprise-Class Communication, Microsoft Teams Operator Connect, AI-Driven Contact Center Solutions, CCaaS, CX Optimization, Unified Communications, VoIP Integration, Digital Transformation, Webex By Cisco, Zoom Phone, Contact Center Integration, Workforce Management Consulting, Global Enterprise Voice | AI-First Work Platform, Video Communications, Enterprise Solutions, AI Companion, Team Collaboration, Contact Center Solutions, Virtual Events, Webinars, Real-time Collaboration, Unified Communications, Video Conferencing, Audio Conferencing, Mobile Collaboration, Inclusive Work Environment |
| Website | ||
| Website | calltower.com | zoom.com |
About CallTower
CallTower, founded in 2002, has consistently positioned itself as a pioneer in the field of global communication. The company specializes in enterprise-class cloud communication and collaboration solutions, aiming to empower businesses with state-of-the-art technologies. Central to its offerings are...
About Zoom
Zoom, founded in 2013, has established itself as a pioneering force in the Information Technology and Messaging sectors. Known for its AI-First Work Platform for Human Connection, Zoom aims to transform workplace collaboration and communication through an expansive suite of products. From AI Compani...
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Compiled from the BounceWatch company index. We last looked at CallTower on 17 May 2026, and Zoom on 1 Jun 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.