Company lists · Data refreshed September 2026

Top 25 Custom SaaS developers based in Ukraine

Name: Custom SaaS developers based in Ukraine
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 270 companies tracked

RevenueBase identified 270 custom SaaS developers headquartered in Ukraine as of September 2026 and tracks 4,139 professional contacts across them, including 1,001 with verified work emails and 63 with mobile numbers. Kyiv is the largest hub.

This list covers custom SaaS developers 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 29, 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 29, 2026 86% judged on-target in blind review

270Companies

4,139Contacts tracked

1,001Verified emails

63Mobile numbers

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The 25 largest custom SaaS developers based in Ukraine

Ranked by team size

Top 25 of 270 custom SaaS developers based in Ukraine, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to custom SaaS developers: 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	Partial evidence	Kropyvnytskyi, UkraineHQ checked Sep 29, 2026	201-500	335 contacts →
	Partial evidence “Onix-Systems is a full-scope software development company that delivers outstanding results and excellent customer service.” Source: RevenueBase Database · checked Sep 29, 2026
2	NIX Ukraine	Partial evidence	Kharkiv, UkraineHQ checked Sep 29, 2026	1,001-5,000	193 contacts →
	Partial evidence “NIX is a leading custom software development company based in Ukraine.” Source: RevenueBase Database · checked Sep 29, 2026
3	Ukeess Software House	Partial evidence	Lviv, UkraineHQ checked Sep 29, 2026	51-200	147 contacts →
	Partial evidence “UKEESS Software House is a custom software development and consulting company.” Source: RevenueBase Database · checked Sep 29, 2026
4	IN	Indirect evidence	Kyiv, UkraineHQ checked Sep 29, 2026	201-500	132 contacts →
	Indirect evidence “Our team helps to develop high-quality software products, fitting both the deadline and budget.” Source: RevenueBase Database · checked Sep 29, 2026
5	Blackthorn Vision	Indirect evidence	Lviv, UkraineHQ checked Sep 29, 2026	51-200	122 contacts →
	Indirect evidence “Blackthorn Vision is a Microsoft-partnered.NET and AI development company.” Source: RevenueBase Database · checked Sep 29, 2026
6	Codebridge Technology, INC	Partial evidence	Kyiv, UkraineHQ checked Sep 29, 2026	51-200	117 contacts →
	Partial evidence “Codebridge builds AI systems and custom software for growing companies.” Source: RevenueBase Database · checked Sep 29, 2026
7	APIKO	Indirect evidence	Ternopil, UkraineHQ checked Sep 29, 2026	51-200	93 contacts →
	Indirect evidence “Apiko is a software development company founded in 2014 with a team of 120+ specialists delivering end-to-end digital solutions for businesses worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
8	EXOFT	Partial evidence	Lviv, UkraineHQ checked Sep 29, 2026	51-200	90 contacts →
	Partial 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 29, 2026
9	Sevenpro	Indirect evidence	Kyiv, UkraineHQ checked Sep 29, 2026	51-200	70 contacts →
	Indirect evidence “We are a team of professionals who provide high-quality services in Software Development and Technology Consulting.” Source: RevenueBase Database · checked Sep 29, 2026
10	Triare	Indirect evidence	Cherkassy, UkraineHQ checked Sep 29, 2026	11-50	60 contacts →
	Indirect evidence “TRIARE is a software company that helps businesses and startups with their digital needs.” Source: RevenueBase Database · checked Sep 29, 2026
11	SMISS	Indirect evidence	Kharkiv, UkraineHQ checked Sep 29, 2026	51-200	58 contacts →
	Indirect 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 29, 2026
12	Bits Orchestra	Indirect evidence	Zymna Voda, UkraineHQ checked Sep 29, 2026	11-50	57 contacts →
	Indirect 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 29, 2026
13	Amtoss	Partial evidence	Kharkiv, UkraineHQ checked Sep 29, 2026	51-200	53 contacts →
	Partial 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 29, 2026
14	Mascode	Indirect evidence	Kyiv, UkraineHQ checked Sep 29, 2026	11-50	50 contacts →
	Indirect 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 29, 2026
15	Centum-D	Indirect evidence	Dnipro, UkraineHQ checked Sep 29, 2026	51-200	49 contacts →
	Indirect evidence “With 12 years of experience, 150+ successful projects, and clients across 19 countries, Centum-D is your trusted technology partner for scalable and results-driven Web & Mobile…” Source: RevenueBase Database · checked Sep 29, 2026
16	Spilna Sprava	Indirect evidence	Vinnytsya, UkraineHQ checked Sep 29, 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 29, 2026
17	Brainence	Indirect evidence	Lviv, UkraineHQ checked Sep 29, 2026	11-50	39 contacts →
	Indirect evidence “Brainence is a software development company with 9+ years of experience building powerful products and scaling development teams.” Source: RevenueBase Database · checked Sep 29, 2026
18	Faster Than Light	Partial evidence	Kyiv, UkraineHQ checked Sep 29, 2026	11-50	38 contacts →
	Partial evidence “We are Faster Than Light, an European custom software development company originally from Kyiv, Ukraine.” Source: RevenueBase Database · checked Sep 29, 2026
19	Interlink, Ukraine	Indirect evidence	Cherkasy, UkraineHQ checked Sep 29, 2026	51-200	38 contacts →
	Indirect evidence “InterLink is a software development company with a rich history and significant technical expertise.” Source: RevenueBase Database · checked Sep 29, 2026
20	URICH	Partial evidence	Львів, UkraineHQ checked Sep 29, 2026	11-50	36 contacts →
	Partial evidence “We specialize in custom software development, delivering scalable and tailored solutions to meet your unique business needs.” Source: RevenueBase Database · checked Sep 29, 2026
21	Theraven	Indirect evidence	Vinnytsia, UkraineHQ checked Sep 29, 2026	11-50	34 contacts →
	Indirect evidence “TheRaven is a product-oriented software engineering company helping startups and growing businesses turn ideas into scalable, investment-ready digital products.” Source: RevenueBase Database · checked Sep 29, 2026
22	Os-System	Indirect evidence	Chornomorsk, UkraineHQ checked Sep 29, 2026	11-50	33 contacts →
	Indirect evidence “OS-System: Elevating Digital Solutions for Startups and Enterprises.” Source: RevenueBase Database · checked Sep 29, 2026
23	Devurai	Indirect evidence	Shevchenkivskyi District, UkraineHQ checked Sep 29, 2026	11-50	32 contacts →
	Indirect evidence “We build dedicated software development teams for companies that need software to grow but don't have the time, in-house expertise, or resources to build and run their own team.” Source: RevenueBase Database · checked Sep 29, 2026
24	Cybercraft	Partial evidence	Lviv, UkraineHQ checked Sep 29, 2026	11-50	30 contacts →
	Partial evidence “CyberCraft is a founder-led product engineering company helping SaaS companies and scaling startups build new products, scale existing platforms, modernize legacy systems, apply…” Source: RevenueBase Database · checked Sep 29, 2026
25	Yellow Duck Coders	Indirect evidence	Chernivtsi, UkraineHQ checked Sep 29, 2026	11-50	29 contacts →
	Indirect evidence “Dear Friend, You and Your business deserve the highest quality.” Source: RevenueBase Database · checked Sep 29, 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 SaaS developers. 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 SaaS developers.
Partial evidence: Its own public description names part of custom SaaS developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom SaaS developers. 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 270 custom SaaS developers based in Ukraine

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Custom SaaS developers based in Ukraine at a glance

As of Sep 29, 2026

24.2%Verified-email coverage

1.5%Mobile-number coverage

15.3Average contacts per company

11-50Median size (employees)

16.3%Largest-city concentration · Kyiv

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

159

51-200

201-500

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 32.0d

4050–30

53831–60

4561–90

090–180

13180+

Company record updated

Median 95.0d

00–30

31931–60

1,56061–90

1,97790–180

283180+

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 SaaS developers, 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 SaaS developers”. 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 SaaS developers), 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 SaaS developers, 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, 1,001 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 29, 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 SaaS developers by metro

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 SaaS developers, 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 SaaS developers are there based in Ukraine?

RevenueBase identified 270 custom SaaS developers 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 SaaS developers?

Kyiv leads with 44 headquartered companies, followed by Lviv (28) and Kiev (25).

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 1,001 verified decision-maker contacts tracked across these 270 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 29, 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.