Mozilla released the Firefox browser for developers it cryptically announced last Monday.

Timed exactly with the Firefox browser’s 10th anniversary, Firefox Developer Edition takes the developer tools that were an add-on in previous versions of the browser and blows them up to occupy the entire screen.

See also: Mozilla Is Working On A Firefox Browser Just For Developers

Firefox Developer Edition predominantly features two major tool suites, Valence (formerly known as Firefox Tools Adapter) and Web IDE. Valence allows developers to deploy and debug across multiple browser environments, while Web IDE allows programmers to develop and tweak apps directly within the browser window.

“We’re giving developers the whole browser as a hard-hat area, allowing us to bring front and center the features most relevant to them,” wrote Dave Camp, director of developer tools at Mozilla. “Having a dedicated developer browser means we can tailor the browsing experience to what developers do every day.”

Image of Dave Camp by Mozilla; screenshot by ReadWrite