Company lists · Data refreshed September 2026

Top 25 Custom web software agencies based in Spain

Name: Custom web software agencies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 1,533 companies tracked

RevenueBase identified 1,533 custom web software agencies headquartered in Spain as of September 2026 and tracks 7,736 professional contacts across them, including 927 with verified work emails and 138 with mobile numbers. Barcelona is the largest hub.

This list covers custom web software agencies headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 24, 2026 86% judged on-target in blind review

1,533Companies

7,736Contacts tracked

927Verified emails

138Mobile numbers

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The 25 largest custom web software agencies based in Spain

Ranked by team size

Top 25 of 1,533 custom web software agencies based in Spain, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom web software agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	CYC	Indirect evidence	Mutilva, SpainHQ checked Sep 24, 2026	51-200	364 contacts →
	Indirect evidence “CYC es una consultora tecnológica especializada en proyectos de desarrollo a medida, plataformas de productividad y Business Intelligence.” Source: RevenueBase Database · checked Sep 24, 2026
2	Balidea	Strong evidence	Santiago De Compostela, SpainHQ checked Sep 24, 2026	201-500	191 contacts →
	Strong evidence “Technology services company, specialized systems, software and web platforms development.” Source: RevenueBase Database · checked Sep 24, 2026
3	Nano Nino INC	Indirect evidence	Alicante, SpainHQ checked Sep 24, 2026	51-200	166 contacts →
	Indirect evidence “Welcome to Nano Nino Inc.” Source: RevenueBase Database · checked Sep 24, 2026
4	Tuyú Technology	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 24, 2026	51-200	61 contacts →
	Indirect evidence “Tuyú Technology es una organización especializada en Tecnologías de la Información, que ofrece servicios de Consultoría, Desarrollo de Aplicaciones y Mantenimiento de sistemas.” Source: RevenueBase Database · checked Sep 24, 2026
5	BIKO	Indirect evidence	Mutilva Baja, SpainHQ checked Sep 24, 2026	51-200	58 contacts →
	Indirect evidence “Biko somos una empresa del sector TIC con fuerte especialización y experiencia en el negocio digital en Internet con más de 18 años de experiencia con empresas de sectores muy…” Source: RevenueBase Database · checked Sep 24, 2026
6	Bluumi SA Create Apps IOS And Android	Indirect evidence	Seville, SpainHQ checked Sep 24, 2026	11-50	56 contacts →
	Indirect evidence “Bluumi is the trademark of Mill Aplications Company SA, it was born in 2010 with the sole objective of being one of the main players in what we call the ERA MOBILE.” Source: RevenueBase Database · checked Sep 24, 2026
7	Qualitapps	Strong evidence	Barcelona, SpainHQ checked Sep 24, 2026	51-200	50 contacts →
	Strong evidence “At QualitApps, we are experts in software development, such as web and mobile applications, web design and eCommerce.” Source: RevenueBase Database · checked Sep 24, 2026
8	Trilogi	Indirect evidence	Igualada, SpainHQ checked Sep 24, 2026	51-200	49 contacts →
	Indirect evidence “TRILOGI es una empresa líder en el desarrollo, implantación y outsourcing de comercio electrónico.” Source: RevenueBase Database · checked Sep 24, 2026
9	Diseño WEB Veiss Comunicación	Partial evidence	Vitoria, SpainHQ checked Sep 24, 2026	11-50	48 contacts →
	Partial evidence “Veiss es una agencia de servicios de diseño web y marketing online, con experiencia en desarrollo de soluciones para Internet con más de 10 años de trayectoria.” Source: RevenueBase Database · checked Sep 24, 2026
10	Solbyte Servicios Informáticos	Partial evidence	Málaga, SpainHQ checked Sep 24, 2026	11-50	47 contacts →
	Partial evidence “Somos una empresa tecnológica, formada por un equipo de 30 profesionales y creada en 2008, especializada en el desarrollo de software a medida y en la consultoría tecnológica.” Source: RevenueBase Database · checked Sep 24, 2026
11	Admiral Studios	Indirect evidence	Valencia, SpainHQ checked Sep 24, 2026	51-200	46 contacts →
	Indirect evidence “At Admiral Studios, we turn your ideas into easy-to-use websites and apps.” Source: RevenueBase Database · checked Sep 24, 2026
12	Fdsa Desarrollo	Partial evidence	Palma, SpainHQ checked Sep 24, 2026	51-200	44 contacts →
	Partial evidence “Una empresa mallorquina especializada en desarrollo de software B2B a medida.” Source: RevenueBase Database · checked Sep 24, 2026
13	Aditelsa	Partial evidence	Madrid, SpainHQ checked Sep 24, 2026	51-200	43 contacts →
	Partial evidence “Aditelsa fue fundada en 2002 y a lo largo de los años ha ido consolidando un sólido prestigio en el área de Desarrollos y Proyectos Software, especialmente en Gestores de Bases de…” Source: RevenueBase Database · checked Sep 24, 2026
14	Atlantida	Indirect evidence	Madrid, SpainHQ checked Sep 24, 2026	11-50	42 contacts →
	Indirect evidence “Atlántida nace en 1993, evolucionando exponencialmente tanto en el personal incorporado a la compañía, como en la cobertura de servicios que ofrecemos a nuestros clientes.” Source: RevenueBase Database · checked Sep 24, 2026
15	Your Inspiration WEB	Indirect evidence	Santa Cruz De Tenerife, SpainHQ checked Sep 24, 2026	11-50	40 contacts →
	Indirect evidence “Your Inspiration è un'agenzia di comunicazione fondata nel 2011 da Nando Pappalardo.” Source: RevenueBase Database · checked Sep 24, 2026
16	Magnético	Strong evidence	Madrid, SpainHQ checked Sep 24, 2026	51-200	38 contacts →
	Strong evidence “Magnético es una empresa de desarrollo de software a medida especializada en el desarrollo de aplicaciones móviles y web.” Source: RevenueBase Database · checked Sep 24, 2026
17	Develoop Software	Partial evidence	Barcelona, SpainHQ checked Sep 24, 2026	11-50	38 contacts →
	Partial evidence “Develoop es una empresa de desarrollo e implementación de software con más de 20 años de experiencia.” Source: RevenueBase Database · checked Sep 24, 2026
18	10code Software Design	Indirect evidence	Dos Hermanas, SpainHQ checked Sep 24, 2026	11-50	38 contacts →
	Indirect evidence “Desde 10Code queremos contribuir en el desarrollo de tu empresa ayudándola a conectar con el mundo gracias a desarrollos específicos y adaptados a sus necesidades.” Source: RevenueBase Database · checked Sep 24, 2026
19	Reappciona	Partial evidence	Erandio, SpainHQ checked Sep 24, 2026	11-50	37 contacts →
	Partial evidence “Desarrollo y consultoría de Software.” Source: RevenueBase Database · checked Sep 24, 2026
20	Inforyde	Partial evidence	Madrid, SpainHQ checked Sep 24, 2026	11-50	34 contacts →
	Partial evidence “Customised solutions target both large corporations and small businesses, and are optimised using cutting-edge technologies.” Source: RevenueBase Database · checked Sep 24, 2026
21	Xerintel, Líderes EN Desarrollo WEB Y APP EN España	Partial evidence	Jerez, SpainHQ checked Sep 24, 2026	11-50	34 contacts →
	Partial evidence “Desarrollo de páginas web, apps y tiendas online desde 2003.” Source: RevenueBase Database · checked Sep 24, 2026
22	Twentic	Partial evidence	Barcelona, SpainHQ checked Sep 24, 2026	11-50	34 contacts →
	Partial evidence “Consultoría Tecnológica especializada en tres áreas- Portales web 2.0, blogs, Social Media, SEO / SEM, webs corporativas, extranets de clientes/proveedores, aplicaciones web…” Source: RevenueBase Database · checked Sep 24, 2026
23	540	Partial evidence	Mutilva, SpainHQ checked Sep 24, 2026	11-50	34 contacts →
	Partial evidence “Somos una empresa de desarrollo de software y nuestro propósito es hacer felices a todos las personas que intervienen en el desarrollo de software.” Source: RevenueBase Database · checked Sep 24, 2026
24	Ebolution	Indirect evidence	Madrid, SpainHQ checked Sep 24, 2026	11-50	30 contacts →
	Indirect evidence “We are a boutique agency specializing in designing, building, and optimising B2C and B2B digital channels.” Source: RevenueBase Database · checked Sep 24, 2026
25	Gmedia	Indirect evidence	Barcelona, SpainHQ checked Sep 24, 2026	1-10	29 contacts →
	Indirect evidence “GMK Unlimited, Agencia Interactiva Con más de 10 años de experiencia en marketing y comunicación, nos hemos especializado en ámbitos del marketing online, la programación, el…” Source: RevenueBase Database · checked Sep 24, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: custom web software agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names custom web software agencies.
Partial evidence: Its own public description names part of custom web software agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom web software agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,533 custom web software agencies based in Spain

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Custom web software agencies based in Spain at a glance

As of Sep 24, 2026

12.0%Verified-email coverage

1.8%Mobile-number coverage

5.0Average contacts per company

1-10Median size (employees)

14.6%Largest-city concentration · Barcelona

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

1,230

11-50

258

51-200

201-500

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 27.0d

6890–30

22431–60

1061–90

290–180

2180+

Company record updated

Median 89.0d

00–30

1,47731–60

3,12061–90

2,79690–180

343180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among custom web software agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “custom web software agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names custom web software agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among custom web software agencies, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 927 across the full list. 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 September 24, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Custom web software agencies by metro

Custom web software agencies in Barcelona224
Custom web software agencies in Madrid208
Custom web software agencies in Valencia77
Custom web software agencies in Malaga31
Custom web software agencies in Sevilla29

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names custom web software agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many custom web software agencies are there based in Spain?

RevenueBase identified 1,533 custom web software agencies headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

CYC, headquartered in Spain, tops this list with the largest team on record.

Which city has the most custom web software agencies?

Barcelona leads with 224 headquartered companies, followed by Madrid (208) and Valencia (77).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 927 verified decision-maker contacts tracked across these 1,533 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 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 Smart Search, 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.