If you're looking for an HTML editor for Linux/UNIX, there are lots of great choices out there. But these are not them. These Web editors for Linux/UNIX are some of the worst I've found after doing an evaluation of over 130 editors in 35 categories. If you must choose an HTML editor, don't choose one from this list. Try an editor from this list instead: Best Linux/UNIX Web Editors.
Each editor listed below has a star rating and percentage listed in the commentary. The percentage indicates how close to the perfect HTML editor they scored.
XMLPro is an XML editor that allows you to write XHTML inside it. It is listed as free, but only for non-commercial use. Since most people are trying to do some type of business online, I don't recommend using it for websites for that reason alone. I couldn't find any information on their site about pricing for commercial use. It is a text editor with tag completion and XML support. (2 stars, 15%)
350 Pages Lite is an inexpensive version of 350 Pages which is essentially a hosting provider that makes it easy to build Web pages. The editor is a WYSIWYG editor with limited functionality and you are forced to use them as a Web host, so it's a subscription service, rather than purchasing the software. 350 Pages Lite has FTP and site manager, image editing, multimedia, and pre-built templates. (2 stars, 18%)
350 Pages Standard is a hosting provider that makes it easy to build Web pages. The editor is a WYSIWYG editor with limited functionality and you are forced to use them as a Web host, so it's a subscription service, rather than purchasing the software. 350 Pages Standard has a WYSIWYG editor, FTP and site manager, image editing, multimedia, form wizards, ecommerce wizards, photo gallery maker, and pre-built templates. (2 stars, 18%)
Website Meta Language is more like a toolkit for Unix administrators who need to periodically output something as HTML. It is ideal for those users, but for the average Web designer, it doesn't have a lot of features. It does have HTML validator, search and replace on the current document, and CSS support. (2 stars, 18%)
EditLive! for XML is an XML editor that you can use to edit XHTML pages. But at nearly $9000 dollars, this is not a tool that most freelance and individual Web designers or developers will want to use. It is intended for use by corporations. It allows non-technical people to manipulate XML files live on the server. It has some WYSIWYG for XML files, search and replace in the current document, special characters, CSS editor, spell check, customization, a form wizard, and lots of XML support. (2 stars, 20%)
Ektron's eWebEditPro+XML is another XML editor that you can use to edit XHTML pages. It is expensive at nearly $600, and is intended for corporations who have non-technical employees who need to edit XML files directly on the server. It has a WYSIWYG editor, accessibility validator, limited FTP, search and replace on the current document, special characters, spell check, and lots of XML. (2 stars, 20%)
SciTE is a SCIntilla based text editor. It was originally created to show off the power fo SCIntilla, but has evolved into a wider range text editor. It is of most interest to people who use SCIntilla. It has color coding, limited site management (but no FTP), search and replace in the current document, XML support, some scripting support, and customization. (2 stars, 21%)
350 Pages Free is the free version of the 350 Pages editor. 350 Pages is essentially a hosting provider that makes it easy to build Web pages. The editor is a WYSIWYG editor with limited functionality and you are forced to use them as a Web host, so it's a subscription service, rather than purchasing the software. 350 Pages Free has FTP and site manager, image editing, multimedia, and pre-built templates. It is ranked higher because it is free, but you can only build one site with it. (2 stars, 22%)
CuTE is a free text editor. It is intended to be a source code editor, but that includes the source code of Web pages - HTML. It has the features color coding, search and replace in the current page, multiple file editing, JavaScript, PHP and other scripting languages. I couldn't find CSS support or search and replace over multiple documents. (2 stars, 23%)
Jalbum is only loosely a Web editor because it really only builds one type of Web page: a photo album. But if that is all you need to build, then it could be a good fit. But once you want to post any other type of page to your album, you'll need to find another editor. It has WYSIWYG, FTP and site management, edit multiple files at once, edit images, HTML DOCTYPE pages, is customizable, and has pre-built photo gallery templates. (2 stars, 24%)
What do you think are the most important features of a Web editor? Is it the price? WYSIWYG? HTML code validation? Something else?