Telerik AD (Bulgarian: Телерик АД) is a Bulgarian company offering software tools for web,[1] mobile, desktop application development, tools and subscription services for cross-platform application development.

The company then expanded its offerings to include user interface (UI) navigation controls, and the Telerik Sitefinity content management system a few years later.

[8] Telerik introduced support for HTML5 and JavaScript in 2011 with its Kendo UI product,[9] coinciding with expected industry growth in mobile adoption.

[10] Company growth came by way of hiring in Bulgaria, as well as expansion and acquisition abroad:[11] As of 2013, Telerik had 800 employees in 11 offices,[18] led by co-CEOs Vasil Terziev and Svetozar Georgiev,[19] and Chief Product Officer Aaron Mahimainathan.

However, it also has several products that are free and open source: NativeScript, Kendo UI Core,[24] Data Access, Just Decompile and the “Sitefinity Project Feather[25]” Initiative.