Si bien existen toda una serie de editores, específicamente diseñados para trabajar con hojas de estilo, la mayoría de los desarrolladores prefieren más bien un programa "todo terreno". Si sólo quieres poner a prueba como funciona un editor CSS puro, intente con el siguiente freeware:
Simple CSS — A Free CSS Authoring Tool
To help you work with CSS, we've created a free tool called Simple CSS,
which runs on Macs, Windows and Linux. Simple CSS allows you to easily create
Cascading Style Sheets from scratch, and/or modify existing ones, using a
familiar point-and-click interface.
With Simple CSS, you can manage multiple CSS projects and import your existing style sheets. Simple CSS supports CSS2.
40tude HTML
40tude HTML is a professional HTML editor for Windows 95, 98, 2000 and XP.
40tude HTML offers an amazing number of features that let you do webdesign the
professional way.
http://www.40tude.com/
Arachnophilia
Arachnophilia is a powerful programming editor with some special HTML production and editing features.
http://www.arachnoid.com/
ConTEXT
ConTEXT is a small, fast and powerful text editor, developed mainly to serve as secondary tool for software developers. Unlimited open files, unlimited editing file size, 4kB line length, powerful syntax highlighting, multilanguage support, unicode UTF8 support, code templates ...
http://fixedsys.com/
Dreamweaver
Diseñe páginas Web en las condiciones equivalentes a un navegador real, sin
perder por ello el acceso directo al código, gracias a la nueva función Vista en
vivo de Dreamweaver CS4. Los cambios del código se reflejan de forma instantánea
en la representación gráfica. Utilice las prácticas recomendadas de CSS sin
necesidad de escribir código. Cree nuevas reglas CSS en el panel Propiedades y
obtenga, como asistencia para este proceso, explicaciones claras y sencillas
acerca de la ubicación que corresponde a cada una de las propiedades en la
cascada de estilos.
HomeSite
HomeSite 5.5 provides a lean, code-only editor for web development. Advanced
coding features enable you to instantly create and modify HTML, CFML, JSP, and
XHTML tags, while enhanced productivity tools allow you to validate, reuse,
navigate, and format code more easily. Configure Macromedia HomeSite to fit your
needs by extending its functionality and customizing the interface.
http://www.adobe.com/
HotDog Professional
The perfect authoring tool for both professional and budding Webmasters,
HotSocial 2009 provides a flexible, text based HTML authoring environment. It
makes complex processes simple without getting in the way of specialized tasks
that require undivided attention and scrutiny.
http://www.sausage.com/
HTMLPad
HTMLPad is a sophisticated all-in-one HTML, CSS, JavaScript and XHTML editor. Clean and convenient interface, quick startup, true flexibility and powerful features allow you to create and edit HTML, XHTML, CSS and JavaScript code faster and easier than ever, while integrated tools enable you to validate, reuse, navigate and deploy your code in an efficient and sophisticated manner. Built-in CSS editor enables you to easily create and edit cascading style sheets of any size and complexity. Built-in JavaScript editor makes it easy to handle JavaScript.
http://www.blumentals.net/
jEdit
jEdit is a mature and well-designed programmer's text editor that has been in development for over 5 years. Built-in macro language, extensible plugin architecture, syntax highlighting for more than 80 languages, Supports UTF8 and Unicode, 'folding' for selectively hiding regions of text, highly configurable and customizable.
http://www.jedit.org/
NetObjects Fusion
An intuitive website design program that creates a true drag-and-drop experience
for both designers and developers. Quickly layout images, text or any object
exactly where you want it on the page. Easily create professional Ajax user
interfaces with the power of XHTML, CSS, JavaScript and XML. Data-bind any
object to database or RSS feeds to add dynamic content to your site.
http://www.netobjects.com/
<oXygen/>
XML Editor, Schema Editor and XSLT Debugger
<oXygen/> is an XML Editor and XSLT Debugger written in Java with Unicode support. It offers end tag auto-completion and a powerful code insight. The code insight can follow a DTD or an XML Schema or even can learn the structure from a partial edited document.
http://www.oxygenxml.com/
phpMole
Is an integrated development enviroment for developing (primarily) web based and phpgtk based applications. It grew out of porting Moleskine to php. Since then it has got out of control! In simple words: PHPMole is Dreamweaver crossed with MS Visual Studio, with a Content Mangement interface and Image tools thrown into the bag ...
http://www.akbkhome.com/
Primalscript
Is the ultimate code-level development tool for you. Primalscript makes your development tasks faster and easier with language-sensitive Primalsense, code snippets, project management, Syntax coloring. Great coloring of embedded scripts in HTML, ASP, PHP, and JSP. Separate colors for client-side and server side scripts. Embedded scripts are colored according to that scripting language.
http://www.sapien.com/
Rapid CSS Editor
With Rapid CSS Editor you can quickly and easily create and edit cascading style sheets of any size and complexity. You can write the style sheet code manually or let the program do it for you. In each case it is easy because of various helpful features, including auto complete, code inspector and CSS checker. Results are shown instantly within built-in preview. Rapid CSS Editor is designed to save your time and make the job easier.
http://www.blumentals.net/
Style Master
From beginner to expert, Style Master will make working with CSS more efficient, more productive, and more enjoyable. It includes a heap of standards based templates as well as our hands-on tutorial which you can work through in your own time and learn the ins and outs of CSS using both Style Master and hand coding CSS.
http://www.westciv.com/
TopStyle Pro
Written by Nick Bradbury, creator of HomeSite, TopStyle Pro contains powerful tools for building standards-compliant sites. Edit your HTML, XHTML and CSS in a single program; Check your CSS syntax against multiple browsers; Upgrade outdated HTML - including font tags - to CSS; Convert your HTML to XHTML with TopStyle's HTML Tidy integration; Find out CSS class usage throughout your site; Side-by-side Internet Explorer and Netscape Gecko preview ...
http://www.bradsoft.com/
TSW WebCoder
WebCoder allows you organize your files in projects, and upload single pages or whole projects to FTP, through the built-in FTP client. You will get all the help that you need to write code, as WebCoder contains libraries with HTML, CSS, JS, VBS and PHP tags, an AutoProposal function, that will suggest which HTML tags, attributes and values to use, and AutoComplete, that keeps you from wasting time on writing end tags. You receive help to keep your code nice and clean from the HTML Tidy support, and if you like using Stylesheets (CSS), then why not use WebCoders built-in support for the great TopStyle CSS editor?
http://www.tsware.net/
Ultraedit
Text Editor - HEX Editor - HTML Editor - Programmers Editor
http://www.ultraedit.com/
VIM
Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems. Available for many platforms (ie. Win, Linux, Mac, OS/2)
http://www.vim.org/
XEmacs
Is a highly customizable open source text editor and application development system. It is protected under the GNU Public License and related to other versions of Emacs, in particular GNU Emacs. Its emphasis is on modern graphical user interface support and an open software development model, similar to Linux. XEmacs has an active development community numbering in the hundreds, and runs on Windows 95 and NT, Linux and nearly every other version of Unix in existence.
http://www.xemacs.org/
xmlSpy
A new product family of XML editing tools - the industry-standard XML development environment; Stylevision - the ultimate XML tool for web designers; and Authentic - an easy-to-use, web-based XML content editor for business users. xmlSpy adds a collection of new features including XSLT debugging, WSDL editing, HTML-to-XML conversion, C++/Java code generation, Tamino Integration, and much more!
http://www.xmlspy.com/
BBEdit
Whenever you need to work with text, whether you want to create or maintain a Web site, search log files and extract data, or write a few paragraphs (or pages, or books), BBEdit offers features which will make your task quicker and easier.
http://www.barebones.com/
Cascade Light
A free comprehensive editor for Cascading Style Sheets (CSS). It makes it easy to design the presentation style of your websites without having to deal with the CSS source code. Conveniently edit fonts, colors, white space and all other CSS style and layout aspects of HTML pages and XML documents.
http://www.macupdate.com/
CSSEdit Power Tools
The unique extraction tool grabs styles from any site that uses CSS. The perfect way to learn new tricks and check out problems! Live Page Preview takes CSS editing far beyond any of your dreams: see your web pages change live without having to save! Visual Editing CSS is still a standard that defines how your site looks. Quite simply put, CSSEdit will save your sanity when editing style sheets. Its intuitive approach to style sheets and powerful editing features will make you deliver beautiful standards-based sites in no time!
http://www.macrabbit.com/
Dreamweaver
Diseñe páginas Web en las condiciones equivalentes a un navegador real, sin
perder por ello el acceso directo al código, gracias a la nueva función Vista en
vivo de Dreamweaver CS4. Los cambios del código se reflejan de forma instantánea
en la representación gráfica. Utilice las prácticas recomendadas de CSS sin
necesidad de escribir código. Cree nuevas reglas CSS en el panel Propiedades y
obtenga, como asistencia para este proceso, explicaciones claras y sencillas
acerca de la ubicación que corresponde a cada una de las propiedades en la
cascada de estilos.
http://www.macromedia.com/
jEdit
jEdit is a mature and well-designed programmer's text editor that has been in development for over 5 years.
Built-in macro language, extensible plugin architecture, syntax highlighting for more than 80 languages, Supports UTF8 and Unicode, 'folding' for selectively hiding regions of text, highly configurable and customizable.
http://www.jedit.org/
Pagespinner
PageSpinner is an easy-to-use, web page editor for Mac OS supporting HTML,
XHTML, PHP, SSI, CSS and a built-in JavaScript generator.
http://www.optima-system.com/
skEdit
Simple, Flexible, Powerful Text Editor for the Web.
http://www.skti.org/
Style Master
From beginner to expert, Style Master will make working with CSS more efficient, more productive, and more enjoyable. It includes a heap of standards based templates as well as our hands-on tutorial which you can work through in your own time and learn the ins and outs of CSS using both Style Master and hand coding CSS.
http://www.westciv.com/
TextMate
Whether you are a programmer or a designer, the production of code and markup is hard work. Without an editor dedicated to the task, it is also often cumbersome, overwhelming, and repetitive. Especially when you are dealing with a lot of files at once — like most projects do. TextMate puts you back in control, reduces the mental overhead, and turns manual work into something the computer does.
http://macromates.com/
VIM
Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems. Available for many platforms (ie. Win, Linux, Mac, OS/2)
http://www.vim.org/
Xylescope
Using Xylescope is like surfing with an x-ray vision. You will immediately see beneath the surface of the web pages you are visiting. Experiment by changing CSS values in author style sheets - no matter if they are on the internet or on your own computer. Export interesting source code with ease and apply new and consistent formatting to your own CSS files.
http://culturedcode.com/
Amaya
Amaya is a Web editor, i.e. a tool used to create and update documents directly
on the Web. Browsing features are seamlessly integrated with the editing and
remote access features in a uniform environment. This follows the original
vision of the Web as a space for collaboration and not just a one-way publishing
medium.
http://www.w3.org/amaya/
BlueFish
Bluefish is a powerful editor targeted towards programmers and webdesigners,
with many options to write websites, scripts and programming code. Bluefish
supports many programming and markup languages, and it focuses on editing
dynamic and interactive websites.
http://bluefish.openoffice.nl/
jEdit
jEdit is a mature and well-designed programmer's text editor that has been in development for over 5 years. Built-in macro language, extensible plugin architecture, syntax highlighting for more than 80 languages, Supports UTF8 and Unicode, 'folding' for selectively hiding regions of text, highly configurable and customizable.
http://www.jedit.org/
NEdit
NEdit is a standard GUI (Graphical User Interface) style text editor for
programs and plain-text files. Users of Macintosh and MS Windows based text
editors should find NEdit a familiar and comfortable environment. NEdit provides
all of the standard menu, dialog, editing, and mouse support, as well as all of
the standard shortcuts to which the users of modern GUI based environments are
accustomed. For users of older style Unix editors, welcome to the world of
mouse-based editing!
http://nedit.1command.com/
http://www.nedit.org/
Quanta
Quanta Plus is a web development tool for the K
Desktop Environment. Quanta is designed for quick web development and is
rapidly becoming a mature editor with a number of great features.
http://quanta.sourceforge.net/
VIM
Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems. Available for many platforms (ie. Win, Linux, Mac, OS/2)
http://www.vim.org/
XEmacs
is a highly customizable open source text editor and application development system. It is protected under the GNU Public License and related to other versions of Emacs, in particular GNU Emacs. Its emphasis is on modern graphical user interface support and an open software development model, similar to Linux. XEmacs has an active development community numbering in the hundreds, and runs on Windows 95 and NT, Linux and nearly every other version of Unix in existence.
http://www.xemacs.org/