TopStyle is a web editing and design software that allows you to create and edit HTML, XHTML, and CSS files. It is discontinued, and its latest version is 5.0.0.104, which includes several tools and features to improve efficiency and productivity when working with these web coding languages.

One of the main new features included in TopStyle 5 is support for CSS3. This translates into significantly improving the Inspector, Insight, and Style Checker. In addition, TopStyle 5 includes Prefixr, a tool that allows developers to create standard CSS3 rules and convert them into prefixed rules to ensure cross-browser compatibility.

Another exciting feature is the ability to use CSS3 media queries. This allows developers to create different stylesheets for different types of devices, such as large screens and mobile devices. A CSS3 gradient generator and a text shadow generator have also been included.

TopStyle 5 has also improved file preview options, allowing you to move frequently used files to the top of the list, including HTML documents from the same directory, and organize CSS more efficiently. In addition, support has been added for Google Chrome as an internal preview browser.

It also includes support for CSS groups, which makes it easier to organize selectors and allows you to view them in a folder structure in the CSS Selectors panel. In addition, CSS Tidy, a CSS parser and optimizer, has been integrated to improve page loading speed and reduce traffic. The software also includes a function for organizing CSS selectors into groups, which facilitates the management of large style sheets.

Another helpful tool is CSS3 gradient generation, which allows you to specify gradients in CSS without using background images. In addition, TopStyle features a text shadow generator and a color contrast analysis tool to ensure that the chosen colors are readable and accessible.

TopStyle's preview pane has always included support for Internet Explorer and Mozilla Gecko, and with version 4, support for Safari was also added. A Google Chrome-based preview has also been integrated and installed with the software without downloading anything additional. In addition, the preview pane includes a tool called XRAY that allows you to visualize the page layout and get information about the position, margins, padding, and dimensions of any element when you click on it.

Other exciting features of TopStyle are the option of synchronization between the preview and the editor (only for HTML), the file history that allows managing backup copies of each document, and the possibility of highlighting all occurrences of a selected text to facilitate its search and replace. In addition, the software includes an enhanced auto-replace function that makes it possible to use variables and create multi-line elements.

As for code editing itself, it features a brace matching function and a help function for CSS properties when Ctrl+clicking or pressing F1. The search and replace function in files has also been improved, which now supports SFTP in addition to FTP, and new options have been added for Auto-Replace, such as the ability to use variables and to have specific elements for CSS and HTML.

It also offers the ability to work with workspaces, allowing developers to work on multiple projects simultaneously and switch between them easily. The software also includes an FTP/SFTP browsing panel and a file history to manage revisions and roll back to previous versions.

The software was acquired by Stefan van As, a Windows application developer with extensive experience in the IT field. Van As added some features that users highly demanded. These features include Unicode support, live editing via FTP, and extensible tool buttons.

Previously, TopStyle had been stalled due to a lack of time for the original creator, Nick Bradbury, to work on developing the software.