Company lists · Data refreshed November 2026

Top 25 Voice interface design agencies worldwide

RevenueBase identified 171 company matches for voice interface design agencies worldwide as of November 2026 and tracks 787 professional contacts across them, including 101 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for voice interface design agencies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for voice interface design agencies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
171Companies
787Contacts tracked
101Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest voice interface design agencies worldwide

Ranked by team size
Top 25 of 171 company matches for voice interface design agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202611-50118 contacts →

Exact match

“RAIN is a pioneer in voice and conversational AI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBogotá, ColombiaHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Founded in may 2004 and based in Bogotá, Colombia, Grupodot has evolved using a model founded on interaction design for the conceptualization and deployment of services that…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBuenos Aires, ArgentinaHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Un chatbot no es una plataforma tecnológica.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMenlo Park, CA, United StatesHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“Promptu Systems Corporation is at the tipping point of a mobile revolution fueled by Voice User Interface (VUI) applications - the most intuitive and natural way to interact with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGuildford, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Vocala is a Voice Design Studio and Agency producing experiences for the Amazon Alexa and Google Home platforms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“A Johnny Days é um estúdio especializado em produção de áudio e voz para comunicação, tecnologia e interfaces conversacionais.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchGurgaon, IndiaHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“Xtreme Gen AI is a cutting-edge technology company focused on revolutionizing communication through AI-powered voice solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact match서초구, South KoreaHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Voice Gateway to Digital World No.1.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Somos especialistas em criar experiências de conversa que conectam tecnologia, operação e pessoas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchFrankfurt, GermanyHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Welcome to Frank Reply – the Reply network’s pioneer in Conversational Technology!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHyderabad, IndiaHQ recorded Nov 6, 20261-108 contacts →

Exact match

“We at VoiceQube passionately build Voice applications for businesses that allow brands to talk to their customers, one on one.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHyderabad, IndiaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“While many companies provide voice, IVR and touch-tone services, most do not offer the same set of services that are available to web users.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-508 contacts →

Exact match

“We are a Berlin based agency for Conversational AI, UX Design & Research.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGuildford, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Dataflex was acquired by Eseye Ltd in 2012 Dataflex designed and manufactured proven VoIP access solutions for real time, business critical Enterprise voice solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 20261-106 contacts →

Exact match

“How consumers interact with technology is changing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCulver City, CA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“imperson is the leading conversational AI platform and full service creative studio for the development of premium enterprise chatbots.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“With Gyst, enterprises eliminate IVR guesswork and design voice experiences customers actually want to use.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“We are a group of passionate voice innovators and customer experience professionals who strongly believe in diversity, agility and equality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWaltham, MA, United StatesHQ recorded Nov 6, 202651-2005 contacts →

Exact match

“Boston UX specializes in intuitive interface design for touch- and voice-powered connected and embedded devices and related applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 20261-105 contacts →

Exact match

“IAXOV is empowering government, NGOs, and Enterprise to unlock verifiable competency and understanding challenges.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSão Paulo, BrazilHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Na TAU, acreditamos que o futuro das interfaces conversacionais se encontra na junção entre tecnologia de ponta e a compreensão profunda das necessidades humanas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchVila Nova De Gaia, PortugalHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Pioneers and adventurers in AI, voice and conversational interfaces.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Ramon, United StatesHQ recorded Nov 6, 202611-504 contacts →

Exact match

“EIG specializes in applying research-based best practices to improving customer service through great voice user interface design.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLyon, FranceHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Chez Taiwa, nous concevons des solutions vocales adaptées à tous les secteurs d’activités.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSydney, AustraliaHQ recorded Nov 6, 202611-503 contacts →

Exact match

“We are the one of the first platform-agnostic Voice and AI startup based in Sydney, Australia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 171 voice interface design agencies worldwide

See the full list, filter by size, metro and specialty, and access 101 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Voice interface design agencies worldwide at a glance

As of Nov 6, 2026
12.8%Verified-email coverage
4.6Average contacts per company
1-10Median size (employees)
2.9%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
111
11-50
52
51-200
7

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for voice interface design agencies are linked below.
What qualifies
Company records worldwide whose business descriptions match “voice interface design agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 101 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Voice interface design agencies by location

1 lists · largest first

Every Voice interface design agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “voice interface design agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voice interface design agencies are there worldwide?

RevenueBase identified 171 company matches for voice interface design agencies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

RAIN tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most voice interface design agencies?

The United States leads with 47 companies. Every voice interface design agencies list by country and city is linked on this page.

Which city has the most voice interface design agencies?

London leads with 5 company records, followed by Sao Paulo (5) and San Francisco (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 101 professional contacts with verified work emails tracked across these 171 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 171 voice interface design agencies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.