Company lists · Data refreshed September 2026
Top 25 Custom software application development companies based in Türkiye
RevenueBase identified 758 custom software application development companies headquartered in Türkiye as of September 2026 and tracks 4,729 professional contacts across them, including 538 with verified work emails. Istanbul is the largest hub.
This list covers custom software application development companies headquartered in Türkiye, 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.
The 25 largest custom software application development companies based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 227 contacts → | ||||
Indirect evidence “Probel Bilgisayar, 1998 yılında IT sektöründe orta ve büyük ölçekli kurum ve kuruluşlara yönelik başlatmış olduğu çalışmalarına günümüzde 220 kişilik uzman ve nitelikli kadrosu…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 132 contacts → | ||||
Indirect evidence “The owner of the brand “TechNarts”, Nart Informatics was established in 2007.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 102 contacts → | ||||
Indirect evidence “1975 yılında Sabancı Holding bünyesinde kurulan BİMSA, 40 yıllık deneyimi ile Türkiye’nin önde gelen bilgi teknolojisi şirketlerindendir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 74 contacts → | ||||
Strong evidence “Smartiks was established in 2006 to provide effective business solutions, software development and consultancy with its expert staff by using the highest technology.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 61 contacts → | ||||
Indirect evidence “Welcome to the tech playground of the future.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 53 contacts → | ||||
Strong evidence “Caretta Software was founded in 1997, offering services such as custom software development, software support, IT consultancy and outsourcing services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 50 contacts → | ||||
Indirect evidence “Yazılım ihtiyaçlarınız için deneyimli çözüm ortağınız!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 47 contacts → | ||||
Indirect evidence “Müşterilerine operasyonlarını kolay ve verimli bir şekilde yürütmelerini sağlayacak çözümler ve bu çözümlerin devamlılığını garantileyen hizmetler sunmak için kurulmuş bir yazılım…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 43 contacts → | ||||
Indirect evidence “NextLua is a technology company, based in Turkey and founded by a team of experienced developers.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 43 contacts → | ||||
Indirect evidence “İşinizi yazılıma dönüştürüyoruz.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 40 contacts → | ||||
Indirect evidence “Solvera olarak, yenilik ve değişimi kendisine kılavuz edinen uzman ve tecrübeli ekibimizle, akılcı ve pratik çözümler sunan sistemler geliştirerek; müşterilerimize ihtiyaçlarını…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 37 contacts → | ||||
Strong evidence “Kle Information Technologies is Software Outsourcing & Development service provider offering outsourced product development, custom development and IT outsourcing services to its…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 35 contacts → | ||||
Partial evidence “At Rast Mobile, we deliver innovative software solutions that help businesses grow, scale, and stay ahead.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 34 contacts → | ||||
Strong evidence “SİSTEK has established since 1992 and we are specialized to design and develop customized and packaged software solutions in industrial and commercial areas.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 29 contacts → | ||||
Indirect evidence “2011 yılından beri hizmet verdiğimiz bilişim sektöründe ki bilgi birikimi ve tecrübemizi HEY ürün ailesi ile sizlere sunuyoruz.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 29 contacts → | ||||
Indirect evidence “Yenilikçi yazılım çözümleri geliştirme hedefiyle 2011 yılında kurulan KC TEK, kurumsal firmalara yönelik web tabanlı özel yazılım çözümleri geliştirir; ileri teknoloji gerektiren…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 contacts → | ||||
Strong evidence “At BREW, we deliver exceptional software development services that turn your digital vision into reality.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 25 contacts → | ||||
Partial evidence “MGS Software is one of MGS companies that has been working in Turkey during the last 20 years.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 22 contacts → | ||||
Indirect evidence “Pronic yazılım olarak şirketlerin tam ihtiyacı olan çözümlere ulaşmasını sağlamak birincil hedefimizdir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 21 contacts → | ||||
Indirect evidence “İşimiz sürdürülebilir ve kaliteli yazılım projeleri geliştirmek.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 21 contacts → | ||||
Indirect evidence “Gömülü Yazılım Geliştirme,Özel Yazılım Projeleri ve Web Mobil Projeleri” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 20 contacts → | ||||
Indirect evidence “Sanalogi Bilişim Teknolojileri yılından bu yana bilgi teknolojileri alanında hizmet veren Sanalogi Bilişim Teknolojileri, İstanbul Yıldız Teknik Üniversitesi Teknopark’ta bulunan…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 19 contacts → | ||||
Strong evidence “Serve following IT services on various sectors;* Enterprise software solutions * B2B and B2C software solutions * Mobile app development * Cloud based app development * Managed…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 19 contacts → | ||||
Partial evidence “Padran delivers unique end to end software services that matter.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 19 contacts → | ||||
Indirect evidence “Yazılım geliştirmek ve danışmanlık hizmetleri vermek üzere yola çıktık ve özellikle ERP, CRM ve MRP uygulamaları üzerinde uzmanlaştık.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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 758 custom software application development companies based in Türkiye
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Custom software application development companies based in Türkiye at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 758 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 Türkiye 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 Türkiye 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, 538 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 Istanbul231
- Custom software application development companies in Ankara58
- Custom software application development companies in Izmir43
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 Türkiye?
RevenueBase identified 758 custom software application development companies headquartered in Türkiye 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?
Probel Yazılım VE Bilişim Sistemleri A.Ş, headquartered in Izmir, tops this list with the largest team on record.
Which city has the most custom software application development companies?
Istanbul leads with 231 headquartered companies, followed by Ankara (58) and Izmir (43).
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 538 verified decision-maker contacts tracked across these 758 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.
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