Vriska is a free Chrome add-on developed by starship-one. This add-on brings a touch of personality to your browsing experience by adding a picture of Vriska to your browser. With Vriska, you can click and drag the image around your browser window, making it a fun and interactive feature.

The simplicity of Vriska is its charm. It doesn't offer any additional functionalities or features besides the image of Vriska. However, for fans of the character or those who enjoy customizing their browsing experience, Vriska adds a unique touch to your Chrome browser.

Please note that Vriska is a browser add-on and not a standalone program. It is only compatible with the Chrome browser and can be easily installed from the Chrome Web Store.