Company lists · Data refreshed November 2026

Top 25 Telecom software developers based in Türkiye

Name: Telecom software developers based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 56 companies tracked

RevenueBase identified 56 company matches for telecom software developers associated with Türkiye as of November 2026 and tracks 1,564 professional contacts across them, including 459 with verified work emails. Istanbul is the largest hub.

This list covers company matches for telecom software developers associated with Türkiye, 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 November 5, 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 Nov 5, 2026 How this list was built

56Companies

1,564Contacts tracked

459Verified emails

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The 25 largest telecom software developers based in Türkiye

Ranked by team size

Top 25 of 56 company matches for telecom software developers based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	I2i Systems	Exact match	Esenler, TürkiyeHQ recorded Nov 5, 2026	201-500	428 contacts →
	Exact match “i2i Systems is an international information technology company that specializes in developing innovative ideas and solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Gentel Telekomünikasyon A.Ş	Exact match	Umraniye, TürkiyeHQ recorded Nov 5, 2026	51-200	388 contacts →
	Exact match “Gentel Telecommunication was founded in 2006, for developing work areas and work opinions in telecommunication industry with its strong background and experience over 30 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	TDM Teknoloji	Exact match	Şişli, TürkiyeHQ recorded Nov 5, 2026	51-200	78 contacts →
	Exact match “Since our founding in 1997, we have worked to provide value to our customers by offering customized services with a focus on technology.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	DEFNE	Exact match	Sarıyer, TürkiyeHQ recorded Nov 5, 2026	11-50	66 contacts →
	Exact match “Defne, is a leading global provider of telecom solutions, software products and services for communications networks.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Este Bilisim	Exact match	İstanbul, TürkiyeHQ recorded Nov 5, 2026	51-200	51 contacts →
	Exact match “Este Bilisim is one of the leading companies in information and communication technologies sector in Turkey, providing business solutions to its customers with its high quality…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	EVB CRM Services	Exact match	Izmir, TürkiyeHQ recorded Nov 5, 2026	201-500	39 contacts →
	Exact match “EVB, yurtiçi ve yurtdışında bulunan partnerlerine bilişim, enerji ve iletişim sektörlerinde hizmet vermektedir.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Sistek	Exact match	İstanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	38 contacts →
	Exact match “SİSTEK has established since 1992 and we are specialized to design and develop customized and packaged software solutions in industrial and commercial areas.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Mtek Bilisim	Exact match	Besiktas, TürkiyeHQ recorded Nov 5, 2026	51-200	33 contacts →
	Exact match “Your Strong and Reliable Business Partner!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Servisnet Telekomünikasyon A.Ş	Exact match	Pendik, TürkiyeHQ recorded Nov 5, 2026	51-200	32 contacts →
	Exact match “Your best international partner.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	NGSS	Exact match	İstanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	31 contacts →
	Exact match “NGSS is a software company specialized in network telecommunications, especially on the OSS/BSS side, offers specialized products and services for Telecom service providers and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Ante Grup Bilişim	Exact match	Ankara, TürkiyeHQ recorded Nov 5, 2026	51-200	30 contacts →
	Exact match “ANTE Grup, 2012 yılında kurulmuştur.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Procom	Exact match	İstanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	29 contacts →
	Exact match “Procom Technology is founded in Istanbul, Turkey by professionals with their long-standing IT and telecommunication sector experience.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Techone Company	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	25 contacts →
	Exact match “Techone is a software solutions company that has customer satisfaction as a primary focus, has worked in all levels of the telco and software industry for many years, and aims to…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Invio Bilişim	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	23 contacts →
	Exact match “Invio, internet teknolojileri ve mobil uygulamalar alanında faaliyet gösteren bir teknoloji şirketidir.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Sonitel	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	22 contacts →
	Exact match “Sonitel, Turkey's 360° Customer Experience Platform Sonitel is a Turkey-based customer experience platform that unifies contact center, IP and cloud PBX, omnichannel…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Btarge	Exact match	Fikirtepe, TürkiyeHQ recorded Nov 5, 2026	11-50	19 contacts →
	Exact match “Our company was founded by a team with 15 years of experience in software development projects specific to public, telecommunications, banking, finance and production institutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Wifispot Network Yönetim Çözümleri	Exact match	Atasehir, TürkiyeHQ recorded Nov 5, 2026	11-50	18 contacts →
	Exact match “2009 yılından bu yana yazılım sektörünün içinde olan İBTC Telekomünikasyon, müşteri odaklı çalışma sistemine sahiptir.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Yonca Bilişim Teknolojileri	Exact match	Kocaeli, TürkiyeHQ recorded Nov 5, 2026	11-50	17 contacts →
	Exact match “Subscriber Management System to develop a new generation ERP system set out above.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Retfox	Exact match	İstanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	14 contacts →
	Exact match “RETFOX is a technology company focused on digital transformation solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Parkyeri	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	12 contacts →
	Exact match “Parkyeri is an Istanbul based company with its scope of business covering software development, operations and consultancy.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Acts Telecom	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	11-50	11 contacts →
	Exact match “ACTS is a telecommunication service provider that focus on international voice carrier services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Sintel INC	Exact match	Üsküdar, TürkiyeHQ recorded Nov 5, 2026	11-50	8 contacts →
	Exact match “Software and Technology firm specialized in telecommunications.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	4uict	Exact match	İstanbul, TürkiyeHQ recorded Nov 5, 2026	1-10	4 contacts →
	Exact match “Proje yönetimi, telekomünikasyon ve program yönetimi konularında 15 yılı aşkın tecrübe.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Softroyal	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	1-10	2 contacts →
	Exact match “Softroyal is a company established to develop software for telecommunication industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	CCS Teknoloji	Exact match	Ataşehir, TürkiyeHQ recorded Nov 5, 2026	1-10	2 contacts →
	Exact match “CCS TEKNOLOJİ Bilişim,Telekomünikasyon ve IT sektöründe uzun yıllara dayanan sektör tecrübemiz ile kendi ürün grupları içerisinde dünyanın öncü olan markalarını siz değerli…” Recorded in the RevenueBase company graph · Nov 5, 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 “telecom software developers”. 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 56 telecom software developers based in Türkiye

See the full list, filter by size, metro and specialty, and access 459 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecom software developers based in Türkiye at a glance

As of Nov 5, 2026

29.3%Verified-email coverage

27.9Average contacts per company

11-50Median size (employees)

46.4%Largest-city concentration · Istanbul

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 56 companies.

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 Türkiye whose business descriptions match “telecom software developers” 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 459 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 November 5, 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.

Telecom software developers by metro

Telecom software developers in Istanbul26

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

How many telecom software developers are there based in Türkiye?

RevenueBase identified 56 company matches for telecom software developers associated with Türkiye as of November 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?

I2i Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom software developers?

Istanbul leads with 26 company records, followed by Ankara (3) and Sisli (3).

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 459 professional contacts with verified work emails tracked across these 56 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 November 5, 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.