Company lists · Data verified August 2026

Top 25 Custom software development firms based in Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,070 companies tracked

There are 1,070 custom software development firms headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 7,571 professional contacts across them, including 1,088 with verified work emails and 102 with mobile numbers. Madrid is the largest hub.

This list covers custom software development firms headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,070Companies

7,571Contacts tracked

1,088Verified emails

102Mobile numbers

Unlock all 1,070 companies Free account · no credit card · 2 minutes

The 25 largest custom software development firms based in Spain

Ranked by team size

Top 25 of 1,070 custom software development firms based in Spain, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Atsistemas	Madrid	1,001-5,000	391	61
2	Metaenlace Sistemas DE Información	Murcia.	201-500	268	3
3	Convotis Iberia	Elche	1,001-5,000	208	21
4	Trevenque Group	Granada	51-200	188	49
5	Bitbox S.L	Telde	201-500	187	27
6	Nano Nino INC	Alicante	51-200	165	4
7	Innocv Solutions	Madrid	51-200	151	21
8	Nazaries Intelligenia	Granada	51-200	134	26
9	Premium Minds	Madrid	51-200	126	86
10	Carver Advanced Systems S.L	Barcelona	51-200	97	11
11	Slashmobility	Barcelona	51-200	94	22
12	Mindfactory	Barcelona	11-50	72	23
13	Itequia	Barcelona	51-200	54	8
14	Qualitapps	Barcelona	51-200	49	13
15	Meisters Solutions	Madrid	51-200	46	2
16	Fdsa Desarrollo	Palma	51-200	44	3
17	SFY By Plexus	Barcelona	11-50	43	8
18	Aditelsa	Madrid	51-200	43	2
19	Orienteed	A Coruna Coruna	11-50	38	5
20	540	n/a	11-50	34	1
21	Grupo Gestyde	Madrid	11-50	33	4
22	Actio Procesos Y Tecnología	Zaragoza	51-200	29	5
23	Starshot Software	Leida	51-200	27	8
24	Aner Sistemas Informaticos, S.L	Zarautz	51-200	26	3
25	Salutic	Rincon De La Victoria	11-50	24	4

Showing 25 of 1,070 custom software development firms based in Spain

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,088 reachable decision-makers.

Free account · no credit card

See all 1,070 companies

Custom software development firms based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 183 HQs

102Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

748

11-50

264

51-200

201-500

501-1,000

1,001-5,000

Custom software development firms by metro

Metro	Companies
Custom software development firms in Madrid	183
Custom software development firms in Barcelona	143
Custom software development firms in Valencia	57
Custom software development firms in Malaga	26
Custom software development firms in Sevilla	25
Custom software development firms in Murcia	17
Custom software development firms in Cordoba	16

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “custom software development firms”, with match quality audited by blind human judging, and headquartered in Spain.
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: Contact records re-verify on a rolling cadence; 2 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many custom software development firms are there based in Spain?

There are 1,070 custom software development firms headquartered in Spain as of August 2026 (RevenueBase).

What is the largest company on this list?

Atsistemas, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most custom software development firms?

Madrid leads with 183 headquartered companies, followed by Barcelona (143) and Valencia (57).

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 1,088 verified decision-maker contacts tracked across these 1,070 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,070 custom software development firms based in Spain. Start with a free account, no credit card.

Get the full list

Related lists

Custom software development firms by geography

Browse the directory

Browse: Companies home · All Spain lists · All Custom software development firms lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.