List of software companies in Turkey

The only public way to measure size is the financial statements of listed companies; these are in the Borsa İstanbul Technology index (XUTEK). Companies that are not listed do not have to disclose their revenue. That is why most "largest" lists on the internet rest not on a measurement but on the estimate of whoever wrote the list.

Check three registers: is it on a technopark company list (does it do R&D), is it on the official authorisation list for its field (for e-documents, the GİB private integrator list), and since when has its trade name been registered in MERSİS. If it is in none of them, the company most likely sells someone else's software — that is not wrong, but you need to know who you are signing with.

Only the companies on GİB's private integrator list. As of September 26, 2026 there are 93 companies on the list; you can see all of them with city and contact details on the list page of this site (in Turkish), and the source on GİB's own page.

Even in fields that require authorisation, the distribution is weighted towards İstanbul and Ankara: of the 93 companies on the GİB private integrator list, 55 are registered in İstanbul and 21 in Ankara. For other provinces, the best starting point is the company list of the technopark in that province.

First check the official authorisation list for the field you will work in; in Turkey, software in fields such as e-documents, fuel, energy and EV charging has to communicate with the state, and not every company holds that authorisation. Then verify the company's technopark registration and trade name. On the investment side, the Investment Office of the Presidency of the Republic of Turkey (invest.gov.tr) is the official entry point for foreign investors.