Khan Academy

AI image metadata search and management.

Geçmişi (Price History) is a free lookup tool that shows the price history of Sahibinden listings. To see a Sahibinden price history, just paste the listing number or listing link; price changes are listed in a chart. Besides the website, it also offers a browser extension, plus helper tools such as a vehicle value calculator and model price lists. It is aimed especially at people who buy and sell used vehicles; the site is completely free, supported by ad revenue.

Internet payments infrastructure, with a developer-friendly API for online payments, subscriptions, and financial operations.

Accounting and financial management software for small and medium-sized businesses, with invoicing and reporting.