Firebug is a free and open-source, complete and powerful Web development auxiliary plug-in for Mozilla's Firefox. The same as Chris Pederick's Web Developer, it added plentiful website designing, developing and testing tools at our fingertips. Web developers can use it to debug, edit or even delete HTML, CSS, DOM, and JavaScript code of any website.

ON1/onOne's Perfect Mask is an intelligent digital photo masking filter program. It can run as a standalone application, or be used as a filter plug-in of Adobe Photoshop, Photoshop Elements, Lightroom, Apple Aperture! Its predecessor is just the Mask Pro 4 we were all familiar with.

iMacros, is referred to as IMS in the industry. As its name suggests, this is one tool related to the automation with macros. Initially, it was released as an add-on of Firefox, used to record the operation on a web page, so as to perform circular tasks in batch. But later, in the wake of increasing number of users, it got continuous updating, following more and more perfect functions. Today, it has become a very famous SEO edge tool.

WebP is a new modern image format that supports both lossy and lossless compression launched by Google for Web use. In the same quality, it has much smaller file size than JPEG and PNG formats of images. If all goes well, WebP could soon become the new standard of Web images.

onOne Software's Perfect Layers is a professional PSD (Photoshop proprietary) bitmap format file managing/editing application from Germany. It comes with a variety of special effects library, with which you can easily edit each layer of PSD file and modulate all kinds of special effects for them in real-time.