Microsoft Expression is a family of tools for designers building web and Windows client applications and rich media content. Expression Studio 4 Web Professional includes three applications: Expression Web 4, Expression Encoder 4, and Expression Design 4. 中文產品說明請見微軟網站: Expression Studio 4 Web Professional 專業版

Expression Web 4: Expression Web is a web-design application. Beginning users can build web pages visually, without knowing any markup or server code, using the application's task panes and menus. More advanced users can build websites that fully support web standards such as Extensible Hypertext Markup Language (XHTML), cascading style sheets (CSS), Extensible Markup Language (XML), and Extensible Stylesheet Language Transformations (XSLT).

The Expression Web SuperPreview online service lets designers see how pages will look in other browsers and operating systems, such as Safari on Mac OS X. The SEO Checker helps designers optimize pages for discovery and indexing by search engines.

Expression Encoder 4 Pro: Expression Encoder 4 is a professional-level encoding tool that enhances and encodes video and simplifies publishing it with Silverlight, Microsoft's cross-platform, cross-browser application framework. Expression Encoder can encode a wide array of video file formats, stream live from webcams and camcorders, and capture activity from PC screens. Input formats include AVI, WMV, WMA, MOV, and MPEG. The output format is VC-1, with detailed control over the output characteristics.

Within Expression Encoder, users can perform simple edits such as trimming and cropping. They can add branding overlays to videos, add thumbnail markers at various points to aid viewer navigation, and choose from a variety of player templates for the encoded video.

Note: This is the free edition of Expression Encoder 4. Organizations that need Expression Encoder 4 Pro can obtain it as part of Expression Studio 4 Ultimate or as a separate donation. See the Expression website for a comparison chart(產品功能比較).

Expression Design 4: Expression Design is a graphic design tool that can be used to create and edit vector-based graphics, bitmap-based graphics, and hybrid documents including vector and bitmap elements.

Version 4 adds the ability to import Windows Metafile and Enhanced Metafile graphics, such as those created in Visio and Word. Users can now also save various workspaces, which are specific layouts of panels suitable for different kinds of projects.

Acquiring the Installation Media and Licence Key: Installing this product requires installation media and a licence key. Installation media will be shipped to you free of charge.

The licence key allows you to use the installation media to install the product on as many computers as you have received donations for. This quantity is specified in the donation email sent to your organisation email address after your eligibility has been verified and your administrative fee has been received.

Under the Software Assurance programe, customers acquire the right to install any new release of products covered in the agreement during the term of their coverage.