Looking for a powerful tool for creating standards-compliant sites? Consider TopStyle, written by the creator of HomeSite, the world famous HTML-editor.

You can edit your HTML, XHTML and CSS in a single program.
Preview CSS while you write it.
Style Checker to validate style sheets against multiple browsers.
Style Upgrade tool to quickly replace all outdated HTML code.
Site Reports to see at-a-glance where styles are used in your site.

TopStyle offers many unique features, including the option to upgrade your HTML documents by replacing outdated markup with equivalent styling.

You can also convert HTML to XHTML and check your CSS syntax against multiple browsers, using a side-by-side preview. A harmonious colors feature allows you to easily create pleasant color schemes for your site and more.

TopStyle Pro offers complete site management with the built-in File Explorer, clip libraries and resource manager and integrates with existing web authoring tools.

TopStyle's main window may be customized to suit your editing style. Docking panels enable you to rearrange the positions of the Style Inspector, File Explorer, etc. TopStyle's toolbars are similar to those used in Microsoft Office and are very easy to customize as well. Layouts are a way to save and restore the position of everything on the TopStyle display, enabling you to define different ways of working with minimal fuss. TopStyle comes with a few built-in layouts, but you can easily create your own.

When you open an existing document, TopStyle will try and auto-detect the encoding for the document you're trying to open. The TopStyle editor, Inspector, etc. are all unicode-compliant. When you save your (X)HTML document, you can optionally select encoding for your document (UTF-8, UTF-16, ANSI, etc).

TopStyle's Inspector categorizes HTML attributes so you can quickly see which are required and which are deprecated (outdated). Even better, TopStyle generates XHTML-compliant markup with a simple toggle. TopStyle's unique hyperlinking greatly simplifies navigating between documents. Click an HTML class attribute to navigate to the definition of that class in an external style sheet, or click an anchor tag or CSS link to open the linked file for editing.

TopStyle allows you to edit online documents via FTP. The new FTP Explorer Panel allows you to drag-and-drop documents from your FTP site(s) onto the TopStyle editor. When you save your document, it is automatically uploaded to your FTP site. TopStyle makes FTP totally transparent.