Top Unified Communication Startups in 2026

Hey, we’re Deepgram! We’re an AI speech platform whose mission is to make every voice heard and understood. Our end-to-end deep neural network is revolutionizing the speech-to-text market and taking on the big guys. We’re redefining what companies can do with voice by offering a platform with AI architectural advantage, not legacy tech retrofitted with AI. Deepgram delivers highly accurate, actually usable transcription, right out of the box – or you can train a model for even greater accuracy on the unique words that matter to you. ✅ Live-stream or pre-recorded ✅ On-prem or in the cloud ✅ Scalable and affordable ✅ Dozens of languages and use case models ✅ Features like diarization, summarization, language/topic detection, and more. We’ve raised over $86 million and have been recognized as an Inc. Best Workplace (2021 and 2022), a Forbes Top 50 AI Company to Watch (2021), and a CB Insights Top 100 AI Startup (2021), among others. Come join our revolution to unlock the power of voice technology for everyone. We want to hear what you’ve got to say! An NVIDIA partner and Y Combinator company

Slack is a messaging platform for teams that brings all communication together, creating a single unified archive accessible through powerful search. Launched in February 2014, Slack is the fastest growing B2B application ever and used by over 3 million daily active users.

Nextiva is a Connected Communications company that helps businesses grow faster. It lets people work smarter using its business VoIP phone service, video conferencing, and text messaging software. More than 100,000 companies rely on Nextiva for customer and team communication. U.S. News ranked it the best business phone system in 2020, 2021, 2022, and 2023. Nextiva’s business phone software regularly tops reviewer’s lists for superior uptime and ease of use. Nextiva uniquely manages all customer communications and engagement in one place to provide a truly unified view of the customer. It enhances the customer experience with sales and service tools, analytics, AI, and automation. Nextiva has pioneered Connected Communications from the ground up to provide actionable customer insights in real time across all channels, with communications at its core. With $200M in backing from Goldman Sachs Asset Management, we’re taking that vision to every customer, everywhere. Connected Communications leverages past and present conversations to provide a seamless employee and customer experience. It addresses the dilemma created by fragmented business tools by giving a complete picture of the customer in real time with actionable information for every user.

Dialpad is a cloud-based business phone system that turns conversations into opportunities and helps global teams make smarter calls--anywhere, anytime. We bring simplicity to the professional phone experience and some of the world’s most innovative companies use our platform. Dialpad's products span video meetings, cloud call centers, sales coaching and dialers and enterprise phone systems--and are all infused with the latest AI technologies to help every business make smarter calls. Customers include WeWork, Uber, Motorola Solutions, Domo and Xero. Investors include Amasia, Andreessen Horowitz, Felicis Ventures, GV, ICONIQ Capital, Salesforce Ventures, Scale Venture Partners, Section 32, Softbank and Work-Bench.

Space Made Simple. We are a true end-to-end service provider letting our customers rapidly deploy and operate their payloads on reliable high-performance satellites at an unprecedented simplicity and affordability. Using our Payload Hub, Loft Orbital can seamlessly integrate with multiple payloads and buses out of the box, offering customers the development times of CubeSats without sacrificing heritage, performance, or reliability.

Alertus Technologies offers a customizable array of emergency notification products, including the wall-mounted Alert Beacon, computer desktop alerting, USB panic button, LED marquee display, text-to-speech interface for public address and giant outdoor speaker systems, fire alarm interface, VoIP phone alerting, digital signage and cable television override, and mobile phone alerting capabilities. We serve thousands of global customers in the higher education, K-12, industrial, corporate, healthcare, government, and military sectors.

Kepler Communications is a satellite communications company that is working towards establishing an in-space telecommunications network for space-borne assets. Put simply, we are building cell phone towers in space. This infrastructure will resolve the problem of intermittent connectivity for non-geostationary satellites, will open new business opportunities that necessitate real-time connectivity to satellites, and will reduce reliance on costly and difficult to deploy ground infrastructure. An infrastructure venture is no simple feat, particularly true for space-based infrastructure. To reach this long-term objective, tangible shorter-term milestones are planned in order to incrementally develop the technologies and deploy the infrastructure necessary to execute on this vision. Each milestone towards this vision represents a viable business opportunity, enabling Kepler to sustainably realize this vision.