Twitter Toolbox is a free Chrome extension developed by Isaac Whitfield. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory.

This extension provides users with a range of tools to customize their Twitter experience. Whether you're tired of the default settings or simply want to personalize Twitter to suit your preferences, Twitter Toolbox has got you covered.

With Twitter Toolbox, you can make several modifications to the Twitter website. Some of the main features include the ability to display your full tweet number instead of abbreviated figures like "22.9K." Additionally, you can extend your profile header to be full-size, or even remove it completely if you prefer a cleaner look.

Furthermore, Twitter Toolbox allows you to remove various sections from the Twitter interface, such as the "Who To Follow" box, the "Top Trends" box, the "Photos and Videos" box, and even promotional tweets.

All these customization options can be easily configured through the extension's icon in the URL bar while on Twitter, or via the Extensions options page. Isaac Whitfield also welcomes feature requests from users and is committed to implementing them.