Company lists · Data refreshed November 2026

Top 25 User experience optimization agencies worldwide

Name: User experience optimization agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 14,905 companies tracked

RevenueBase identified 14,905 company matches for user experience optimization agencies worldwide as of November 2026 and tracks 101,253 professional contacts across them, including 27,839 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for user experience optimization 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 user experience optimization 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

14,905Companies

101,253Contacts tracked

27,839Verified emails

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The 25 largest user experience optimization agencies worldwide

Ranked by team size

Top 25 of 14,905 company matches for user experience optimization 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Merkle	Exact match	Columbia, MD, United StatesHQ recorded Nov 6, 2026	10001+	4,725 contacts →
	Exact match “Merkle, a dentsu company, powers the experience economy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Ciklum	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	3,113 contacts →
	Exact match “Ciklum is a global Experience Engineering firm that stands at the forefront of innovation, blending next-generation product engineering, exceptional customer experiences, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Kinesso	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,407 contacts →
	Exact match “KINESSO is the technology-driven performance marketing agency within Omnicom Media that provides actionable growth for both agency partners and clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Grupo Services	Exact match	Curitiba - Matriz / São Paulo - Filial / Ponta Grossa - Filial, BrazilHQ recorded Nov 6, 2026	10001+	2,194 contacts →
	Exact match “Projetamos, entregamos e otimizamos experiências humanas inesquecíveis para o mundo digital atual.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Amplitude	Exact match	San Francisco, United StatesHQ recorded Nov 6, 2026	501-1,000	1,087 contacts →
	Exact match “We help companies unlock the power of their products.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Astound Digital	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	991 contacts →
	Exact match “At Astound Digital, we help brands build smarter, connected digital experiences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	IBM IX Dach	Exact match	Berlin, GermanyHQ recorded Nov 6, 2026	501-1,000	880 contacts →
	Exact match “We are IBM iX.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Wingify	Exact match	Delhi, IndiaHQ recorded Nov 6, 2026	501-1,000	591 contacts →
	Exact match “Wingify is an Agentic Experience Optimization Platform that brings experimentation, personalization, behavioral insights, commerce optimization, feature management and customer…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Scandiweb	Exact match	Riga, LatviaHQ recorded Nov 6, 2026	501-1,000	543 contacts →
	Exact match “We help eCommerce brands identify what’s actually blocking growth and build a clear 90-day plan to fix: Legacy platforms that are slow, fragile, or risky to change; Delivery…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Saggezza, An Apexon Company	Exact match	Santa Clara, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	494 contacts →
	Exact match “Saggezza is now part of Apexon.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	SOHO	Exact match	Santiago, WY, United StatesHQ recorded Nov 6, 2026	201-500	489 contacts →
	Exact match “Somos una empresa que desde 1996 estamos innovando y asesorando a grandes compañías, tenemos +550 clientes en 15 países,+1.400 proyectos desarrollados y hemos sido speakers en 180…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Verndale	Exact match	Boston, United StatesHQ recorded Nov 6, 2026	501-1,000	382 contacts →
	Exact match “We're a digital experience agency delivering human-centric solutions and customer journeys that help businesses overcome the challenges of rapid technological change to achieve…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Niteco	Exact match	Solna, United StatesHQ recorded Nov 6, 2026	201-500	354 contacts →
	Exact match “AI-first global digital agency with 400 experts across 4 continents.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Isc-Cx	Exact match	Basel, SwitzerlandHQ recorded Nov 6, 2026	201-500	309 contacts →
	Exact match “25+ years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	AB Tasty NOW Wingify	Exact match	Paris, FranceHQ recorded Nov 6, 2026	201-500	306 contacts →
	Exact match “AB Tasty started when two founders, Alix de Sagazan and Rémi Aubert, struck out on their own with a simple idea: experimentation and personalization should be faster and easier…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Ioasys	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	201-500	295 contacts →
	Exact match “We are specialists in unique experiences for bold companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Webranking	Exact match	Correggio, ItalyHQ recorded Nov 6, 2026	201-500	265 contacts →
	Exact match “We are a performance-focused digital agency committed to efficiently and transparently driving real growth for major international businesses in an innovative environment, with a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	IA Interactive	Exact match	Morelia, CA, MexicoHQ recorded Nov 6, 2026	201-500	260 contacts →
	Exact match “For nearly three decades, IA interactive has been at the forefront of digital transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Flat 101	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	201-500	248 contacts →
	Exact match “Somos referentes internacionales en diseño, creación y optimización de productos y servicios digitales.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Kameleoon	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	247 contacts →
	Exact match “Kameleoon empowers brands to build better products and digital experiences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	ONE North	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	51-200	227 contacts →
	Exact match “One North is a digital experience agency that combines curiosity, scale, and agility to shape the future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Human Factors International HFI	Exact match	Fairfield, IA, United StatesHQ recorded Nov 6, 2026	201-500	212 contacts →
	Exact match “Welcome to Human Factors International, leaders of experience-led business transformations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Echologyx LTD	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	200 contacts →
	Exact match “EchoLogyx started with a simple idea – provide test development and QA support to the Conversion Rate Optimization teams.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Rayden Interactive	Exact match	Pune, IndiaHQ recorded Nov 6, 2026	501-1,000	198 contacts →
	Exact match “Rayden Interactive, the brainchild of an entrepreneurial duo, was founded in 2019.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	YUJ A Global Design Company	Exact match	Pune-38, IndiaHQ recorded Nov 6, 2026	201-500	194 contacts →
	Exact match “About Us: We are a global UX Design Company with offices in the USA and India, committed to infusing innovation and creativity into every design we craft.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “user experience optimization agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 14,905 user experience optimization agencies worldwide

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User experience optimization agencies worldwide at a glance

As of Nov 6, 2026

27.5%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11,301

11-50

2,995

51-200

463

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 user experience optimization agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “user experience optimization 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 27,839 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.

User experience optimization agencies by location

104 lists · largest first

Every User experience optimization agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “user experience optimization agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many user experience optimization agencies are there worldwide?

RevenueBase identified 14,905 company matches for user experience optimization 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?

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

Which country has the most user experience optimization agencies?

The United States leads with 2,343 companies, followed by India (1,300) and the United Kingdom (939). Every user experience optimization agencies list by country and city is linked on this page.

Which city has the most user experience optimization agencies?

London leads with 380 company records, followed by Paris (186) and New York (174).

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 27,839 professional contacts with verified work emails tracked across these 14,905 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.

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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.