Company lists · Data refreshed September 2026

Top 25 Custom software development companies based in Helsinki, Finland

Name: Custom software development companies based in Helsinki, Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 9, 2026 79 companies tracked

RevenueBase identified 79 company matches for custom software development companies associated with Helsinki, Finland as of September 2026 and tracks 343 professional contacts across them, including 142 with verified work emails and 11 with mobile numbers. Across Finland, Helsinki is the largest hub for this category.

This list covers company matches for custom software development companies associated with Helsinki, Finland, 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 September 9, 2026.

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 Sep 9, 2026 How this list was built

79Companies

343Contacts tracked

142Verified emails

11Mobile numbers

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The 25 largest custom software development companies based in Helsinki, Finland

Ranked by team size

Top 25 of 79 company matches for custom software development companies based in Helsinki, Finland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 9, 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	LONTO	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	51-200	33 contacts →
	Exact match “We create digital products for business.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
2	Asteroid	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	27 contacts →
	Exact match “We’re a co-owned boutique software consultancy that builds high-quality digital solutions for exceptionally satisfied clients.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
3	Timehouse	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	19 contacts →
	Exact match “Me olemme Timehouse, helsinkiläinen ohjelmistoalan yritys, joka on aloittanut toimintansa vuonna 1987.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
4	CEON	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	15 contacts →
	Exact match “Autamme digitalisoimaan liiketoimintaasi.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
5	OY Site Logic AB	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	15 contacts →
	Exact match “Autamme asiakkaitamme menestymään digitaalisessa maailmassa.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
6	WEBSO	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	12 contacts →
	Exact match “Webso on ohjelmistokehityksen edelläkävijä, joka syttyy teknologian uusimmista innovaatioista.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
7	Trineria OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	12 contacts →
	Exact match “Trineria is a modern and agile software development company with strong focus on products tailored to specific customer needs.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
8	Montel Intergalactic	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	11 contacts →
	Exact match “Our team of only senior-level full-stack developers masters the full life cycle of a software system, from business-driven design to reliable software development to continuous…” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
9	Fineto	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	11 contacts →
	Exact match “We're a team of devoted entrepreneurs and software engineers with over a decade in the industry.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
10	Devolon	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	11 contacts →
	Exact match “Devolon is a software house that provides customers with future-proof software solutions by constantly progressing the aptitudes and building a team of the top programmers in…” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
11	Särmä Digital OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	8 contacts →
	Exact match “Särmä on joukko särmiä it-konsultteja, jotka vievät tehtävät suoraan maaliin.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
12	Saucesoft	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	8 contacts →
	Exact match “We are software development company specialised in mobile and web development with modern technologies Get to know us better by checking our website!” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
13	Lucky FEW	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	6 contacts →
	Exact match “Lucky Few is a consultant agency specializing in mobile, web, backend, DevOps, and Azure cloud solutions.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
14	Inia Solutions OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	5 contacts →
	Exact match “Olemme vakaasti kasvava koodaukseen ja konsultointiin erikoistunut ohjelmistoyritys.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
15	Nemesys LTD OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	5 contacts →
	Exact match “We deliver tailor-made software solutions with passion Nemesys provides high scalability, usability & efficiency solutions for your business needs.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
16	Widian OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	5 contacts →
	Exact match “WIDIAN AUTTAA YRITYKSIÄ MENESTYMÄÄN Widian on mobiiliteknologian uranuurtaja.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
17	Riimu Solutions	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	11-50	5 contacts →
	Exact match “We are a software services company that focuses on developing business web applications and mobile solutions.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
18	Raivo OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	5 contacts →
	Exact match “We are rAivo, the mindful software company.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
19	Positive Productions OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	5 contacts →
	Exact match “Positive Productions Oy on ketterä räätälöityihin Internet- ja mobiili -palveluihin erikoistunut ohjelmistoyritys.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
20	FAT Wave	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	4 contacts →
	Exact match “Ohjelmistokonsultointia” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
21	Teqocloud	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	3 contacts →
	Exact match “TeqoCloud is a trusted technology partner for startups and small to mid-sized enterprises (SMEs).” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
22	Kompileri OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	2 contacts →
	Exact match “We are a company specialized in IT consulting, whose experts look and offer solutions for public administration organizations, private sector companies and private organizations.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
23	Taika Group OY	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	2 contacts →
	Exact match “Ohjelmistoja joissa käyttäjä tulee ensin.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
24	Agileo	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	2 contacts →
	Exact match “Agileo provides valuable solutions for your software demands.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
25	Controlproof	Exact match	Helsinki, FinlandHQ recorded Sep 9, 2026	1-10	2 contacts →
	Exact match “Software, fullstack, gaming, AI” Recorded in the RevenueBase company graph · Sep 9, 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 “custom software development companies”. 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 79 custom software development companies based in Helsinki, Finland

See the full list, filter by size, metro and specialty, and access 142 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom software development companies based in Helsinki, Finland at a glance

As of Sep 9, 2026

41.4%Verified-email coverage

3.2%Mobile-number coverage

4.3Average contacts per company

1-10Median size (employees)

Sep 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Freshness & accuracy

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

Email last verified

Median 11.0d

1350–30

631–60

061–90

090–180

1180+

Company record updated

Median 74.0d

00–30

13131–60

16161–90

4190–180

10180+

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.
What qualifies: Company records associated with Helsinki, Finland whose business descriptions match “custom software development companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 142 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 September 9, 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.

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 “custom software development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom software development companies are there based in Helsinki, Finland?

RevenueBase identified 79 company matches for custom software development companies associated with Helsinki, Finland as of September 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?

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

Which city in Finland has the most custom software development companies?

Helsinki leads Finland with 52 company records, followed by Espoo (17) and Oulu (16).

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 142 professional contacts with verified work emails tracked across these 79 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 September 9, 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.