ActiveX

ActiveX

ActiveX is a framework developed by Microsoft for defining reusable software components, like an API. This is a programming-language independent framework and hence can be used in a wide range of applications. It was developed to simplify the complex processes of Object Linking and Embedding (technology that allows linking to documents and objects) and Component Object Modeling (used for inter-process communication). Many of Microsoft’s applications such as Internet Explorer, Office, Visual Studio and Media Player use ActiveX controls.

ActiveX helps make web browsers more interactive. Functionalities like opening PDF files within the browser can be included with the help of ActiveX controls. ActiveX controls dynamically vary depending upon the website that’s accessing them. These controls are basically like browser add-ons and hence each has different functions such as enhancing security or enhancing video content.

Since ActiveX automatically downloads itself and installs during browsing, Microsoft had to work on plenty of security issues to secure the browsing session. It recently made ActiveX an Open Source technology to encourage developers to join in.