Communication

100ms is a live audio and video infrastructure platform that provides developers with SDKs and APIs for embedding real-time communication features — video rooms, audio spaces, live streams, and record

360dialog is a Berlin and São Paulo-based WhatsApp Business API provider and Meta Business Solution Partner that serves as the connectivity and billing intermediary between Meta's WhatsApp Business Pl

8x8 is a cloud communications platform providing unified communications as a service (UCaaS), contact center as a service (CCaaS), and communication APIs for businesses. Founded in 1987 and headquarte

Agora is a real-time engagement platform that provides developers with SDKs and APIs for embedding high-quality voice calls, video calls, interactive live streaming, and real-time messaging into web,

Aircall is a Paris-based cloud business phone system and call center software designed for modern sales and customer support teams — providing VoIP calling, call routing, IVR (interactive voice respon

Airtime — formerly known as Mmhmm — is a video communication software company founded in 2020 by Phil Libin, the co-founder and former CEO of Evernote, and headquartered in San Francisco, California.

Airwaive is a blockchain-powered decentralized wireless broadband marketplace — privately held, founded in 2020 by CEO Jeff Yee (former ZTE and AT&T executive) and Bin Zhu (blockchain serial entrepren

Alphabet Inc. is a Mountain View, California-based technology conglomerate — publicly traded on the NASDAQ (NASDAQ: GOOGL, GOOG) as an S&P 500 Information Technology component — operating as the holdi

Alphabet Inc. is the parent company of Google, YouTube, Waymo, DeepMind, and a portfolio of Other Bets, making it one of the most valuable and consequential technology companies in the world. Google's

Alphabet Inc. Class C shares (Nasdaq: GOOG) represent the same underlying business as Class A (GOOGL) but carry no shareholder voting rights—created in the 2014 stock split to allow founders Larry Pag

AT&T Inc. is a Dallas, Texas-based telecommunications company — listed on NYSE (NYSE: T) — providing wireless mobile services, fiber broadband (AT&T Fiber), and business network solutions to 100+ mill

Bandwidth is a cloud communications platform-as-a-service (CPaaS) company providing enterprise-grade voice, messaging, and emergency services APIs — enabling enterprises, software vendors, and UCaaS p

Beekeeper is a mobile-first frontline employee communication and operational platform built for industries where workers do not sit at desks. Founded in 2012 and headquartered in Zurich, Switzerland,

Bird (formerly MessageBird) is a cloud communications platform providing programmable APIs for SMS, WhatsApp, voice, email, and conversational AI, enabling enterprises to build global customer communi

Bland AI is a San Francisco-based enterprise AI phone call platform — backed by Y Combinator (S23) with $65 million in total funding including a $16 million Series A in August 2024 led by Scale Ventur

Carbyne is a New York and Tel Aviv-based public safety technology company founded in 2014 by Amir Elichai. The company builds cloud-native software for emergency communications centers (PSAPs — Public

Celona was founded in 2019 with the mission of making enterprise-grade private wireless networking as deployable and manageable as enterprise Wi-Fi — eliminating the carrier dependency, integration co

CenturyLink (now Lumen Technologies) is a major US telecommunications and network services company providing broadband internet, voice, managed network services, and enterprise connectivity solutions

CenturyLink, now rebranded as Lumen Technologies (NYSE: LUMN), is a telecommunications and technology company providing enterprise fiber networking, cloud connectivity, security services, and legacy b

Charter Communications is the second-largest cable operator and internet service provider in the United States, operating under the Spectrum brand to provide high-speed internet, television, and mobil

CivicPlus is a Manhattan, Kansas-based local government technology company founded in 2001 that serves over 4,000 communities across North America. The company provides an integrated suite of digital

ClassDojo is the leading K-12 classroom communication and community platform used in 95% of U.S. schools, connecting teachers, students, and families through shared portfolios, announcements, messagin

ClickSend is a multi-channel business communications company headquartered in Perth, Western Australia that provides API and dashboard-driven access to SMS, email, voice broadcast, fax, and physical d

Clubhouse is a social audio platform that enables users to participate in live, voice-based conversations organized into themed rooms. Launched in April 2020 by Paul Davison and Rohan Seth, Clubhouse

Comcast Corporation is the largest American cable telecommunications company and the parent of NBCUniversal, founded in 1963 by Ralph Roberts in Tupelo, Mississippi and now headquartered in Philadelph

Xfinity is the consumer and residential brand of Comcast Corporation (NASDAQ: CMCSA) — the largest cable operator and residential internet service provider in the United States — providing high-speed

Connecteam is a Tel Aviv-based software company that provides an all-in-one employee management platform specifically designed for deskless and frontline workers — the 80% of the global workforce that

Cox Communications is the largest private broadband company in the United States, providing cable TV, high-speed internet, home telephone, and home security services to approximately 5.5 million custo

Cox Communications is an Atlanta, Georgia-based cable, broadband internet, and telecommunications provider — privately held as a wholly-owned subsidiary of Cox Enterprises, a family-owned media and te

Cozmo AI is a San Francisco and Dubai-based enterprise AI voice automation platform deploying low-latency voice AI employees for Fortune 500 companies and regulated industry operators — handling reven

Daily.co (now Daily) is a real-time video and audio API platform enabling developers to embed high-quality video calls, audio conferencing, and live streaming into web and mobile applications without

Devyce is a London-based business mobile communications company that provides employees with a virtual UK or international business phone number delivered as an app on their personal smartphone — elim

Dialpad is an AI-powered business communications platform founded in 2011 in San Francisco by Craig Walker and Brian Peterson, who previously built Google Voice and Google Meet. The company's mission

Discord is a voice, video, and text communication platform founded in 2015 by Jason Citron and Stan Vishnevskiy and headquartered in San Francisco, California, originally designed to give gaming commu

Dixa is a customer service platform headquartered in Copenhagen, Denmark that raised $105 million in Series C funding and positions itself as a modern alternative to legacy contact center and customer

Electronic Arts Inc. (EA) is a Redwood City, California-based global interactive entertainment company — publicly traded on NASDAQ (NASDAQ: EA) as an S&P 500 Communication Services component — develop

Esendex is a business messaging company headquartered in Nottingham, United Kingdom that has provided SMS and voice messaging services to businesses since 2000, serving thousands of UK and European or

EzDubs was a San Francisco-based real-time speech translation startup — backed with $4.7 million raised including a $4.2 million seed round led by Venture Highway with Y Combinator participation in De

Fathom is an AI meeting assistant that automatically records, transcribes, and summarizes video meetings — providing structured meeting notes, action item extraction, and searchable transcripts for Zo

Firstup is an intelligent employee communication and workforce engagement platform that helps enterprise organizations reach every worker with personalized, relevant communications. Founded through th

Five9 is a cloud contact center (CCaaS) platform providing inbound and outbound call center infrastructure, agent desktop, intelligent virtual agents (IVA), and workforce management for enterprises an

Fogbender is an Oakland, California-based B2B customer support platform — backed by Y Combinator (W22) with $550,000 in total funding from Y Combinator and Davidovs Venture Collective — providing API

Fox Corporation is a New York City, New York-based television broadcasting, cable news, and sports media company — its Class A voting shares publicly traded on NASDAQ (NASDAQ: FOXA) as an S&P 500 Comm

Fox Corporation is a New York City, New York-based television broadcasting, cable news, and sports media company — its Class B non-voting shares publicly traded on NASDAQ (NASDAQ: FOX) as an S&P 500 C

Frontier Communications is a US telecommunications company that has repositioned itself as a fiber broadband provider — undertaking a major network transformation to replace legacy copper DSL infrastr

Gateway Fiber is a Wright City, Missouri-based fiber-to-the-home internet service provider — backed by CBRE Investment Management with $250 million in total credit facility (upsized with an incrementa

Genesys is a cloud and on-premises contact center platform company providing AI-powered customer experience software — including cloud contact center (Genesys Cloud CX), omnichannel routing, AI virtua

Giga is a San Francisco-based enterprise AI customer support platform deploying emotionally intelligent AI agents for large-scale contact centers — handling real-time customer voice and messaging inte

Gigs is a Berlin, Germany-based telecom-as-a-service platform — backed by Y Combinator (W21) with $97.1 million in total funding including a $73 million Series B in December 2024 led by Ribbit Capital

Glia is a digital customer service platform built specifically for financial institutions, enabling banks, credit unions, and insurance companies to serve members and policyholders across voice, chat,

Google Fiber is Alphabet's high-speed fiber-to-the-home internet service provider offering gigabit (1 Gbps) and multi-gig (2 Gbps, 5 Gbps) internet speeds at transparent pricing with no data caps — av

GoToMeeting (now part of GoTo) is a web conferencing and video meeting platform providing online meetings, video calls, screen sharing, and webinar capabilities for businesses of all sizes. Originally

Granicus is a Denver-based government technology company that provides cloud-based software for digital communications, open meeting management, resident engagement, and digital services delivery to f

Gupshup is a conversational messaging platform that provides APIs enabling businesses to communicate with customers across 30+ messaging channels—including WhatsApp, SMS, RCS, Instagram, Google Busine

HelpCrunch is a customer communication platform headquartered in Kyiv, Ukraine that provides SaaS products, e-commerce businesses, and digital service companies with an integrated toolset spanning liv

Hyperbeam is a Toronto, Canada-based virtual computer infrastructure platform — backed by Y Combinator with $500,000 raised from YC, Pioneer Fund, and University of Waterloo Endowment — providing deve

Infobip is a global cloud communications company founded in 2006 in Vodnjan, Croatia, and now headquartered in London, that has built one of the world's most extensive direct carrier network infrastru

Interakt is a WhatsApp Business Platform provider headquartered in India that was founded to help Indian SMBs, D2C brands, and e-commerce businesses leverage WhatsApp as a primary channel for sales, m

The Interpublic Group of Companies, Inc. (IPG) is a New York City-based global advertising and marketing services holding company — publicly traded on the New York Stock Exchange (NYSE: IPG) as an S&P

LiveChat is a Wrocław, Poland-based customer service software company that develops and operates a suite of SaaS products centered on the LiveChat customer service platform — a live chat and customer

Live Nation Entertainment, Inc. is a Beverly Hills, California-based live entertainment company — publicly traded on the New York Stock Exchange (NYSE: LYV) as an S&P 500 Communication Services compon

Lumen Technologies (formerly CenturyLink) is a major US telecommunications company providing enterprise fiber connectivity, managed networking, cloud services, and cybersecurity solutions to large ent

Match Group, Inc. is a Dallas, Texas-based online dating and relationship services company — publicly traded on NASDAQ (NASDAQ: MTCH) as an S&P 500 Communication Services component — operating the wor

Mediacom Communications is the fifth-largest cable television operator in the United States, serving 1.3+ million customers across 22 states — primarily operating in smaller cities and rural markets i

MessageBird, now operating as Bird, is an Amsterdam-based communications platform-as-a-service (CPaaS) company that enables businesses to communicate with customers across SMS, email, voice, WhatsApp,

Meta Platforms is one of the world's largest technology companies, operating the world's most widely used social media and messaging applications—Facebook, Instagram, WhatsApp, Messenger, and Threads—

Mint Mobile is an online-first mobile virtual network operator (MVNO) that provides low-cost prepaid wireless service by running on T-Mobile's nationwide network infrastructure — offering unlimited ta

MosaicVoice is an Oakland, California-based AI call center quality assurance and compliance platform — backed by Y Combinator (W22) with $500,000 in funding from Unpopular Ventures, Ulu Ventures, and

Municode is a Tallahassee, Florida-based government technology company founded in 1938 that has grown from a traditional municipal code publisher into a multi-product government digital services platf

News Corp Class A (Nasdaq: NWSA) represents the voting shares of News Corp, a global media and information services company controlled by the Murdoch family through Class B supervoting shares, founded

News Corp is a global media and information services company controlled by the Murdoch family through Class B supervoting shares, founded following the 2013 separation of Rupert Murdoch's News Corpora

Nextiva is a cloud-based unified communications and customer experience management platform headquartered in Scottsdale, Arizona. Founded in 2006, Nextiva has evolved from a business VoIP provider int

NICE CXone is a cloud contact center platform from NICE Ltd., providing omnichannel routing, AI-powered virtual agents, workforce management, interaction analytics, and agent performance tools for ent

Nylas is a San Francisco-based API platform company that provides developers with unified access to email, calendar, contact, and meeting data across all major providers (Gmail, Outlook/Exchange, Yaho

Omnicom Group is one of the world's largest holding companies for advertising, marketing, and communications services, founded in 1986 through the merger of BBDO, Doyle Dane Bernbach, and Needham Harp

OpenPhone is a San Francisco-based business communications platform that provides virtual phone numbers, shared inboxes, and team collaboration tools designed for startups, remote teams, and small bus

Optimum (Altice USA) is a cable internet, television, and phone service provider operating primarily in the New York metropolitan area, New Jersey, Connecticut, and parts of the northeastern and south

Paramount Skydance Corporation is a Los Angeles, California-based global media and entertainment company — publicly traded on NASDAQ (NASDAQ: PSKY) as an S&P 500 component — operating Paramount Pictur

Plivo is a cloud communications platform headquartered in San Francisco with engineering operations in Bangalore, India, that was founded in 2011 by Venky Balasubramanian and Michael Ricordeau to prov

Prokeep is a contractor communication platform designed to consolidate the fragmented messaging channels that trade contractors and wholesale distributors rely on daily. In construction and trades, bu

Propio Language Services is a technology-forward language solutions company founded in 1998 that provides comprehensive interpretation, translation, and localization services to over 14,000 national a

PublicInput is a Raleigh, North Carolina-based community engagement platform founded in 2013 that has raised $11M in funding. The company provides government agencies with a multi-channel platform for

Rasa is an enterprise-focused open-source and commercial platform for building, deploying, and managing conversational AI agents. Founded in 2016 and based in San Francisco, Rasa enables developers an

Rave Mobile Safety is a Framingham, Massachusetts-based emergency communication platform founded in 2004 that provides mass notification and safety communication software to universities, local govern

Read AI is an artificial intelligence productivity company founded in 2021 by David Shim, Robert Williams, and Elliott Waldron, and headquartered in Seattle, Washington. Its core product is an AI meet

Relay is an enterprise communication technology company headquartered in Raleigh, North Carolina, founded in 2016 by Chris Chuang and others as a spinout from Republic Wireless. The company develops t

Replicant is a contact center automation company that uses generative AI to handle inbound customer service voice calls autonomously, without requiring human agents for routine interactions. Its Think

Resend is a San Francisco-based developer-first email infrastructure company providing a modern email API — built on React Email and optimized for developer experience — that enables software teams to

RingCentral is a Belmont, California-based cloud unified communications platform providing business phone systems, video conferencing, team messaging, and contact center (CCaaS) solutions to organizat

Salvy is a São Paulo, Brazil-based mobile virtual network operator (MVNO) for businesses — backed by Y Combinator (W24) with $13.2 million raised including a BRL 10 million seed round in May 2024 led

Simpplr is an AI-powered employee experience and modern intranet platform that helps organizations create a digital headquarters for their workforce. Founded in 2014 and headquartered in Redwood City,

Sinch is a Stockholm-based cloud communications company that trades on Nasdaq Stockholm under the ticker SINCH and provides a customer communications cloud spanning SMS, voice, email, WhatsApp, RCS, a

Slack is a San Francisco-based team collaboration and communication platform — acquired by Salesforce (NYSE: CRM) in 2021 for $27.7 billion — providing organizations with channel-based messaging, dire

Sling is a scheduling, time tracking, and team communication platform built for restaurant and retail businesses managing hourly workforces. Originally a standalone product, Sling was acquired by Toas

Solutionreach is a Lehi, Utah-based patient engagement platform that has served dental, medical, optometry, and specialty healthcare practices with automated appointment reminders, patient messaging,

Spinach AI is a Nashville-based AI meeting assistant that serves as a comprehensive system of record for workplace conversation data — automating meeting summaries, action item extraction, post-meetin

Staffbase is a leading enterprise employee communications platform that helps large organizations reach, inform, and engage their entire workforce — from corporate employees to frontline workers. Foun

Starlink is a satellite internet service operated by Space Exploration Technologies Corp. (SpaceX) — a Hawthorne, California-based private aerospace company founded by Elon Musk — providing high-speed

Talkdesk is a cloud-based contact center platform providing AI-powered customer service software — combining omnichannel routing (voice, email, chat, SMS, social media), AI-powered virtual agents, age

Telegram is a cloud-based messaging and social platform founded in 2013 by Pavel Durov and his brother Nikolai Durov, originally headquartered in Dubai, UAE. The platform offers text, voice, and video

Tempo is a Toronto-based AI-powered design-engineering platform — backed by Y Combinator with $5 million in seed funding raised in October 2025 from YC, Golden Ventures, Box Group, Webflow Ventures, i

Termii is a Lagos, Nigeria-based communications-as-a-service platform — backed by Y Combinator (W20) with $5.18 million in total funding including a $3.65 million round in June 2023 led by FinTech Col

TextMagic is a business SMS platform that has been operational since 2001 and serves tens of thousands of businesses globally with capabilities for sending bulk SMS campaigns, transactional alert noti

Theta Lake provides AI-powered compliance and security solutions for modern collaboration platforms, enabling regulated enterprises to capture, archive, and supervise communications across voice, vide

TigerConnect is the leading clinical communication and collaboration (CC&C) platform for U.S. healthcare organizations, serving more than 7,000 health systems, hospitals, and medical groups. Headquart

TKO Group Holdings, Inc. is the world's premier combat sports and entertainment company, formed in 2023 through the combination of Ultimate Fighting Championship (UFC) and World Wrestling Entertainmen

T-Mobile is the second-largest wireless carrier in the United States, founded in 1994 and headquartered in Bellevue, Washington. The company transformed its competitive position through the "Un-carrie

T-Mobile US, Inc. is the largest wireless carrier in the United States by 5G network coverage and subscriber growth, headquartered in Bellevue, Washington. Controlled by Deutsche Telekom (~50% stake),

The Trade Desk, Inc. is the leading independent demand-side platform (DSP) for the digital advertising industry, providing technology that enables advertising agencies and brands to buy digital advert

Trengo is a customer communication platform headquartered in Utrecht, Netherlands that provides a shared team inbox consolidating customer conversations from WhatsApp, email, live chat, Facebook Messe

Typewise is an AI keyboard application that replaces the native smartphone keyboard with a hexagonal key layout designed to reduce typing errors — using larger keys arranged in a honeycomb pattern, co

Ukama is a United States-based decentralized open-source cellular network platform — backed by Y Combinator (W20) — providing enterprises, ISPs, and individuals with the hardware and software to deplo

Underline Infrastructure is a New York City-based open-access fiber-optic network operator — backed by Ares Management (Infrastructure Opportunities strategy, first digital infrastructure investment f

Unthread is a San Francisco-based AI support platform converting Slack and Microsoft Teams conversations into automated help desk tickets — enabling IT, HR, and customer support teams to manage suppor

Userback is a visual feedback and bug reporting platform that allows end users to annotate screenshots, record short screen sessions, and submit structured feedback directly from within a web applicat

Vapi is an AI voice infrastructure platform providing developers and businesses with the tools to build, test, and deploy voice AI agents — for inbound and outbound calling, customer service automatio

Verizon Communications is a New York-based telecommunications giant operating the largest US wireless network — serving approximately 114 million wireless connections across consumer and business cust

Verizon Fios is Verizon's 100% fiber-optic internet, TV, and phone service, launched in 2005 and available across eight states and Washington, D.C. on the original Fios network — primarily in the Nort

Verloop.io is a conversational AI and customer support automation company headquartered in Bangalore, India that provides an AI-first customer support platform enabling enterprises to automate the res

VideoSDK is a real-time communication infrastructure platform that provides developers with low-code SDKs and APIs for building video and audio features into web and mobile applications. The platform

Vocode is a San Francisco-based open-source voice AI company providing a developer library and platform for building real-time conversational voice applications — enabling developers to create AI voic

Vonage is a cloud communications platform offering unified communications (UCaaS), contact center solutions (CCaaS), and programmable communications APIs (CPaaS) for businesses and developers — provid

The Walt Disney Company is the world's largest entertainment conglomerate, headquartered in Burbank, California. Founded in 1923 by Walt and Roy Disney, the company has grown from a small animation st

When I Work is an employee scheduling and time tracking platform designed specifically for hourly and shift-based workforces. Founded in 2010 and headquartered in Minneapolis, Minnesota, the company h

Whereby is a video meetings platform that offers both a standalone web meeting product and an embeddable API — Whereby Embedded — that allows businesses to add video call functionality to their own we

Windstream Holdings is a Little Rock, Arkansas-based telecommunications provider — privately owned following its emergence from Chapter 11 bankruptcy in 2020 under the Kinetic by Windstream brand — pr

WorkJam is a digital frontline workplace platform that unifies scheduling, task management, team communications, and training for large enterprise organizations with shift-based frontline workforces.

Xfinity is the consumer services brand of Comcast Corporation (NASDAQ: CMCSA) — the Philadelphia-based cable and media conglomerate that is the largest cable internet provider in America — serving 32+