Company lists · Data refreshed September 2026

Top 25 Custom software application development companies based in Ukraine

Name: Custom software application development companies based in Ukraine
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 344 companies tracked

RevenueBase identified 344 custom software application development companies headquartered in Ukraine as of September 2026 and tracks 5,264 professional contacts across them, including 1,107 with verified work emails. Kyiv is the largest hub.

This list covers custom software application development companies headquartered in Ukraine, 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 21, 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 21, 2026 86% judged on-target in blind review

344Companies

5,264Contacts tracked

1,107Verified emails

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The 25 largest custom software application development companies based in Ukraine

Ranked by team size

Top 25 of 344 custom software application development companies based in Ukraine, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to custom software application development companies: 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	Onix-Systems	Strong evidence	Kropyvnytskyi, UkraineHQ checked Sep 21, 2026	201-500	335 contacts →
	Strong evidence “Onix-Systems is a full-scope software development company that delivers outstanding results and excellent customer service.” Source: RevenueBase Database · checked Sep 21, 2026
2	NIX Ukraine	Strong evidence	Kharkiv, UkraineHQ checked Sep 21, 2026	1,001-5,000	193 contacts →
	Strong evidence “NIX is a leading custom software development company based in Ukraine.” Source: RevenueBase Database · checked Sep 21, 2026
3	Ukeess Software House	Strong evidence	Lviv, UkraineHQ checked Sep 21, 2026	51-200	147 contacts →
	Strong evidence “UKEESS Software House is a custom software development and consulting company.” Source: RevenueBase Database · checked Sep 21, 2026
4	IN	Partial evidence	Kyiv, UkraineHQ checked Sep 21, 2026	201-500	132 contacts →
	Partial evidence “Our team helps to develop high-quality software products, fitting both the deadline and budget.” Source: RevenueBase Database · checked Sep 21, 2026
5	Blackthorn Vision	Partial evidence	Lviv, UkraineHQ checked Sep 21, 2026	51-200	122 contacts →
	Partial evidence “Blackthorn Vision is a Microsoft-partnered.NET and AI development company.” Source: RevenueBase Database · checked Sep 21, 2026
6	Eliftech	Partial evidence	Lviv, UkraineHQ checked Sep 21, 2026	51-200	120 contacts →
	Partial evidence “ElifTech is a forward-thinking team of experienced engineers, designers, and project managers focused on providing custom-built tech solutions across AI, fintech, logistics and…” Source: RevenueBase Database · checked Sep 21, 2026
7	Codebridge Technology, INC	Strong evidence	Kyiv, UkraineHQ checked Sep 21, 2026	51-200	117 contacts →
	Strong evidence “Codebridge builds AI systems and custom software for growing companies.” Source: RevenueBase Database · checked Sep 21, 2026
8	EXOFT	Strong evidence	Lviv, UkraineHQ checked Sep 21, 2026	51-200	90 contacts →
	Strong evidence “Exoft is a custom software development company headquartered in Ukraine with over a decade of experience providing software solutions to clients worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
9	Sevenpro	Strong evidence	Kyiv, UkraineHQ checked Sep 21, 2026	51-200	70 contacts →
	Strong evidence “We are a team of professionals who provide high-quality services in Software Development and Technology Consulting.” Source: RevenueBase Database · checked Sep 21, 2026
10	Triare	Partial evidence	Cherkassy, UkraineHQ checked Sep 21, 2026	11-50	60 contacts →
	Partial evidence “TRIARE is a software company that helps businesses and startups with their digital needs.” Source: RevenueBase Database · checked Sep 21, 2026
11	SMISS	Strong evidence	Kharkiv, UkraineHQ checked Sep 21, 2026	51-200	58 contacts →
	Strong evidence “SMISS provides quality software solutions in following domains- Web application development - Web-based information systems development - Cloud solutions - Mobile application…” Source: RevenueBase Database · checked Sep 21, 2026
12	Bits Orchestra	Partial evidence	Zymna Voda, UkraineHQ checked Sep 21, 2026	11-50	57 contacts →
	Partial evidence “Bits Orchestra is a software engineering company specializing in the modernization of business-critical web platforms, CMS, and digital experience platforms.” Source: RevenueBase Database · checked Sep 21, 2026
13	Amtoss	Strong evidence	Kharkiv, UkraineHQ checked Sep 21, 2026	51-200	53 contacts →
	Strong evidence “AMTOSS is a software development company that specializes in delivering custom-tailored technology solutions for companies of all sizes, from SMBs to some of the biggest…” Source: RevenueBase Database · checked Sep 21, 2026
14	Pixelteh	Partial evidence	Zaporizhzhya, UkraineHQ checked Sep 21, 2026	51-200	52 contacts →
	Partial evidence “Achieve your web design and development goals - on time and within budget!” Source: RevenueBase Database · checked Sep 21, 2026
15	Volpis	Partial evidence	Lviv, UkraineHQ checked Sep 21, 2026	11-50	50 contacts →
	Partial evidence “Volpis is a company of ambitious professionals providing Web & Mobile App Design and Development services for more than 7 years.” Source: RevenueBase Database · checked Sep 21, 2026
16	Mascode	Strong evidence	Kyiv, UkraineHQ checked Sep 21, 2026	11-50	50 contacts →
	Strong evidence “We specialize in end-to-end software development, guiding our clients through every stage, from initial discovery to seamless implementation and ongoing support.” Source: RevenueBase Database · checked Sep 21, 2026
17	Jappware	Strong evidence	Lviv, UkraineHQ checked Sep 21, 2026	51-200	48 contacts →
	Strong evidence “Jappware is a trustworthy software development partner for businesses and individual entrepreneurs worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
18	Default Value	Partial evidence	Черкаси, UkraineHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial evidence “Default Value is a web development company founded by developers and built with technological excellence and transparent partnership core concepts.” Source: RevenueBase Database · checked Sep 21, 2026
19	Spilna Sprava	Indirect evidence	Vinnytsya, UkraineHQ checked Sep 21, 2026	51-200	42 contacts →
	Indirect evidence “Spilna Sprava was founded in 90-th by the group of individuals who decided to create their proprietary business after leaving Flextronix Ukraine and Atomic Dog Publishing in the…” Source: RevenueBase Database · checked Sep 21, 2026
20	Brainence	Strong evidence	Lviv, UkraineHQ checked Sep 21, 2026	11-50	39 contacts →
	Strong evidence “Brainence is a software development company with 9+ years of experience building powerful products and scaling development teams.” Source: RevenueBase Database · checked Sep 21, 2026
21	Faster Than Light	Strong evidence	Kyiv, UkraineHQ checked Sep 21, 2026	11-50	38 contacts →
	Strong evidence “We are Faster Than Light, an European custom software development company originally from Kyiv, Ukraine.” Source: RevenueBase Database · checked Sep 21, 2026
22	Interlink, Ukraine	Strong evidence	Cherkasy, UkraineHQ checked Sep 21, 2026	51-200	38 contacts →
	Strong evidence “InterLink is a software development company with a rich history and significant technical expertise.” Source: RevenueBase Database · checked Sep 21, 2026
23	OSDB	Strong evidence	Kyiv, UkraineHQ checked Sep 21, 2026	11-50	36 contacts →
	Strong evidence “OSDB is a full cycle web development company, specializing in web applications development for customers from all over the world.” Source: RevenueBase Database · checked Sep 21, 2026
24	URICH	Strong evidence	Львів, UkraineHQ checked Sep 21, 2026	11-50	36 contacts →
	Strong evidence “We specialize in custom software development, delivering scalable and tailored solutions to meet your unique business needs.” Source: RevenueBase Database · checked Sep 21, 2026
25	IDEUS	Partial evidence	Kharkiv, UkraineHQ checked Sep 21, 2026	51-200	36 contacts →
	Partial evidence “iDeus was founded in 2003 as an outsource development company in Kharkiv, Ukraine, targeting its services to Europe and US markets.” Source: RevenueBase Database · checked Sep 21, 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 software application development companies. 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 software application development companies.
Partial evidence: Its own public description names part of custom software application development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software application development companies. 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 344 custom software application development companies based in Ukraine

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Custom software application development companies based in Ukraine at a glance

As of Sep 21, 2026

21.0%Verified-email coverage

15.3Average contacts per company

11-50Median size (employees)

15.4%Largest-city concentration · Kyiv

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

216

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Ukraine, so it is reported there. Company counts and contact totals on this page are exact for Ukraine, over 344 companies.

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 software application development companies, 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 Ukraine whose own description of what they do matches “custom software application development companies”. 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 software application development companies), 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 software application development companies, and records with no verified work email. Companies headquartered outside Ukraine 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, 1,107 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 21, 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 software application development companies by metro

Custom software application development companies in Kyiv53
Custom software application development companies in Lviv34
Custom software application development companies in Kharkiv29
Custom software application development companies in Kiev28

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 software application development companies, 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 software application development companies are there based in Ukraine?

RevenueBase identified 344 custom software application development companies headquartered in Ukraine 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?

Onix-Systems, headquartered in Kropyvnytskyi, tops this list with the largest team on record.

Which city has the most custom software application development companies?

Kyiv leads with 53 headquartered companies, followed by Lviv (34) and Kharkiv (29).

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 1,107 verified decision-maker contacts tracked across these 344 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 21, 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.