Cascading Style Sheets software

Browsers
Authoring tools
Other

Partial CSS software list Atom news feed

Nearly all browsers nowadays support CSS and many other applications do, too. To write CSS, you don't need more than a text editor, but there are many tools available that make it even easier.

Of course, nearly all software has bugs. And some programs are further ahead implementing the latest CSS modules than others. Various sites describe bugs and work-arounds.

Support charts

Links to official feature lists of various products.

Several people maintain independent CSS support charts:

MDN web docs: CSS
Alexis Deveria: Can I Use?
css3.info: browser support for CSS3
Wikipedia: comparison of layout engines
Web Devout: Web browser CSS support

CSS Browsers

2014年08月18日 Vivliostyle Inc. has launched an Open Source project to create the Vivliostyle browser, a viewer for EPUB and HTML documents. (See also the Vivliostyle Formatter.)
2014年05月22日 NetSurf version 3.1 is a graphical browser with support for HTML5, CSS 2.1, SVG and more (RISC OS, Linux and other UNIX-like systems, Mac OS X, AmigaOS 4; Open Source)
2013年11月09日 Microsys released version 5.0.0 of A1 Website Download, an off-line browser. (Windows, free trial.)
2009年04月17日 The Lobo browser (current version is 0.98) supports CSS2 and also runs Web applications in JavaFX or Java. (Java, Open Source)
2009年03月23日 Microsoft released version 8 of Internet Explorer, with full CSS level 2 support, plus some internationalization features from level 3. (Windows, free)
2008年11月25日 Google has made a beta version available of its Chrome Web browser. (free, partly Open Source; Windows)
2008年07月01日 Apple has released version 3 of the Safari Web browser. It is based on the Open Source HTML/CSS library "WebKit" (itself derived from KHTML). (free; Mac OS X, Windows, iPhone)
2008年06月19日 Opera released version 9.50 of its browser, with support for CSS level 2 and parts of level 3. (Multiple platforms, including cell phones, free on most platforms)
2008年06月19日 Mozilla released version 3 of the Firefox Web browser, with support for CSS level 2 and parts of level 3. (various platforms, Open Source)
2007年04月19日 iCab, a browser for the Mac, supports CSS2 and can help fix errors in HTML or CSS files. (Free standard version, Pro-version for a fee.)
2006年01月16日 Oregan Networks offers the Oregan TV Browser, with support for CSS2, XHTML, XML, etc. (Various embedded platforms)
2005年12月07日 KDE (K Desktop Environment) has released version 3.5. The included Konqueror browser passes the Acid2 test. (Unix/X, Open Source)
2005年04月26日 Cultured Code released Xyle Scope, a browser that helps you analyze the HTML and CSS structure of each page. (Mac OS X, German & English, free trial)
2004年07月26日 Bimesoft released SurfOffline 1.4, an off-line browser, that supports CSS2. The application can download a website to your hard drive completely or partially, which you can then browse off-line. (Windows, shareware)
2004年01月14日 Tao provides the Qi browser for consumer devices (PDAs, phones, etc.). It supports CSS1 and partial CSS2.
2003年07月03日 Netscape released Netscape 7.1, which is based on Mozilla 1.4. (Windows, Mac, Linux, free),
2002年07月24日 The Chimera project released version 0.4. Chimera is a browser for Mac OS X, based on Mozilla's Gecko layout engine. (Mac, Open Source)
2002年01月22日 The X-Smiles team has released version 0.5 ("Oulu") of the X-Smiles XML browser, which supports, among other things, XHTML, SMIL, XForms and the CSS Mobile Profile. (Java, Open Source)
2002年01月08日 NetClue released Clue Browser v4.1.1. It supports HTML, XML/XHTML, namespaces, CSS (level 1 and part of level 2), DOM, Javascript, etc. (Java)
2001年12月19日 Microsoft released Internet Explorer for the Mac 5.1, with bug fixes and improved performance. Supports full CSS1 and partial CSS2. (Mac IE 5 was the first browser to reach better than 99% support for CSS1, in March 2000.) (free; Mac OS 8, 9 & X)
2001年12月18日 OmniWeb 4 is a Web browser for the Mac (OS X) and has a built-in source editor (with HTTP PUT support). (Shareware)
2001年11月28日 Galeon 1.0 is a Web browser for Gnome. It uses the Gecko rendering engine from Mozilla internally. (Open Source, Unix)
2001年11月07日 Adobe produces an SVG plugin for browsers under Mac and Windows and for Mozilla 0.9.1 under Linux & Solaris. Supports SVG with CSS styling. (free)
2001年10月31日 K-Meleon version 0.6 has been released, a lightweight browser based on the Gecko rendering engine of Mozilla (Windows, Open Source)
2001年05月15日 Espial's TV browser implements CSS support for HTML, XML and XHTML. Since 2011, the browser is based on WebKit.
1999年12月02日 Closure is a Web browser written in Common Lisp; supports CSS1.
Emacs/W3, a.k.a. Gnuscape Navigator, supports some CSS1.

These sources document the level of support in various browsers:

2003年10月30日 Quirksmode (Peter-Paul Koch) offers tests and information, including a compatibility chart, that also looks forward to some features that are currently proposed for CSS3.
2002年09月27日 Johannes Koch has a nice page with work-arounds for various browser bugs.
2002年04月09日 The SVG working group has a detailed list of the features (including CSS support) of various SVG implementations.
2000年03月28日 RichInStyle.com has lists of bugs for various browsers. (Careful: as of Oct 2001, there are still several bugs in the list of bugs itself.)
1999年09月09日 Western Civilisation compares CSS1 support in major browsers. Since 2008, the compared browsers are Internet Explorer, Firefox, Safari and Opera.
1999年04月12日 Do you have fear of style sheets? Jeffrey Zeldman has the cure.

CSS Authoring Tools

Currently, most Web authoring tools provide some sort of support for CSS style sheets. The list below is far from complete, but contains (in chronological order) all tools that have been reported to us.

2017年11月22日 Daniel Glazman of Disruptive Innovations released version 3.01 of BlueGriffon, a WYSIWYG Web editor with support for HTML, MathML, SVG and CSS (full level 2 and parts of level 3). Paying versions add additional functions, such as EPUB creation, predefined templates, HTTP PUT support, visual CSS editor, MathML editor, project manager and responsive design mode. (Linux, Windows, Mac; Open Source)
2016年10月18日 AI Internet Solutions released version 16 of CSE HTML Validator, an HTML editor that validates HTML, CSS and/or PHP code, with integrated syntax checker, spell checker, link checker, accessibility checker, SEO and more. (Windows, free ‘Lite’ version, Standard/Pro/Enterprise versions with free trial)
2016年01月18日 CodeLobster publishes the CodeLobster PHP Edition version 5.8.1, an IDE for HTML, CSS, PHP and JavaScript, with code highlighting, debugger, auto-complete, etc., and built-in support for several CMS'es (SVN, Git, SASS, LESS, Drupal, Joomla, Wordpress, Symfony, etc.). (Windows; free version (without CMS support), Lite version and Professional version)
2015年10月21日 SyncRO Soft released version 17.1 of the <oXygen/> XML Editor with improved support for CSS, DITA 1.3, XLIFF 2.0 and more. It supports CSS (WYSIWYG editing), XSL-FO, XSLT, XQuery, various XML- or XHTML-based formats (such as EPUB, TEI, DocBook and DITA) and also has an SVG viewer. (Runs on Java and/or Eclipse platforms, free trial.)
2013年03月04日 The WebStorm JavaScript editor includes a CSS editor with syntax checking, auto-complete, etc. and support for the syntaxes of SASS and LESS. (Windows, Mac, Unix. Various licenses. Free for education and Open Source projects)
2012年08月15日 Liquid XML Editor 2012 features a CSS editor, enabling you to edit your CSS document, and validate it against the W3C standards. (Windows, free trial)
2011年11月18日 OverZone Software offers CSS Tab Designer, a WYSIWYG tool to design menus in XHTML+CSS. (Free, Windows)
2009年02月03日 Improvingcode released snap{css}, a text editor specially made for editing CSS (Windows, source available for inspection)
2009年01月21日 XMLBlueprint XML Editor by Monkfish Software is a full-featured XML editor that supports the creation and editing of XML document, DTDs, Relax NG Schemas, XML Schemas and XSLT Stylesheets. It also supports CSS syntax coloring and CSS code completion. (Windows, free trial)
2008年11月14日 Oiko Software published version 1.00RC1 of their Oiko CSS editor. (Windows, free)
2008年06月19日 Skybound offers a free version of Stylizer Basic (formerly StyleSpread) in addition to the non-free Stylizer Ultimate. Stylizer is a CSS editor with live preview, automatic validation, diagnose tool, FTP upload, etc. (Windows, free basic version)
2008年06月19日 JAPISoft offers EditiX, an XML & XML Schema editor and XSLT debugger. EditiX also includes a CSS editor. (Windows, Mac OS X & Linux; free version available for non-commercial use)
2007年07月20日 Version 2 of XStandard XHTML WYSIWYG editor for content management systems has been released. This version supports more CSS properties. (For Windows and Mac, "Lite" version is free).
2007年05月22日 Panic released Coda, an HTML & CSS editor with webdav, ssh, preview, HTML/CSS references, collaborative editing and more. (Mac, free trial)
2006年11月07日 Macrabbit released version 2 of CSSEdit, a CSS editor with preview (even for dynamic pages), checkpoints/rollback, validation, structure analyzer, etc. Since 2008, CSSEdit 3 is built into the Espresso Web editor. (Mac, free trial)
2006年07月13日 Westciv released Style Master 4.5, a CSS editor with preview, info about browser compatibility, a CSS reference, "X-ray" (CSS inspector), wizards, etc. (Mac and Windows, free trial)
2005年07月21日 Disruptive Innovations and Linspire published version 1.0 of Nvu, a WYSIWYG Web site editor, based on Gecko (Windows, Mac, Linux/X, Open Source)
2005年03月29日 TARI released GoodPage version 1.0.2, an HTML/CSS editor with multiple views, validation, etc. (Mac OS X, free trial)
2005年03月25日 Evrsoft offers 1st Page 2000, an HTML editor with multiple previews, CSS reference, wizards, etc. (Windows, free)
2004年11月04日 Eledicss 0.1 is a CSS editor implemented as a server-side PHP script. It allows editing CSS files using a browser. (Unix, Open Source)
2004年01月07日 cssed is a syntax-directed editor for CSS2 files, with a GUI based on GTK2, syntax highlighting, outline view, etc. (Linux, Open Source)
2004年01月07日 HostM.com Web Hosting released Simple CSS 1.0, an easy-to-use CSS authoring tool. You can manage multiple CSS projects and import existing style sheets. Supports CSS2. (Windows & Mac, freeware)
2003年05月24日 Macromedia's (since 2005: Adobe's) WYSIWYG HTML editor and Web-site development tool Dreamweaver supports partial CSS2 and integrates TopStyle (Windows & Mac, free trial)
2003年04月23日 W3C released version 8.0 of Amaya, a WYSIWYG, structured editor/browser for (X)HTML, SVG, MathML and CSS. Supports remote editing and annotations (Open Source, Solaris, Linux, Mac, Windows)
2003年03月31日 HTML-Kit is an HTML, XHTML and XML editor with plug-ins that provide, among other things, CSS and CSS manuals. (Windows, free)
2003年02月14日 Bradbury Software has released version 3.10 of TopStyle Pro, a CSS1 & 2 editor. New in this version: support for Opera 7, the W3C HTML & CSS validators and Bobby. (Windows, free trial)
2002年05月02日 Daniel Glazman (daniel @glazman.org) has announced a CSS editor add-on for Composer, the content editor of Mozilla/Netscape 6. This CSS editor is an open-source work in progress and can be freely downloaded
2001年11月26日 JustStyle CSS Editor (version 1.2.2) is an editor for CSS1 style sheets. (30-day free trial, Java)
2000年10月14日 Quanta is an HTML editor for the KDE desktop. CSS 1 & 2 support is in the beta for KDE2 (Unix, Open Source)
2000年07月04日 AceHTML 4 by Visicom Media is an HTML/CSS editor for Windows. Both commercial and freeware versions are available.
1999年11月19日 Bluefish is an editor for programmers and Web designers with support for HTML and CSS. (Open Source, Unix, Mac, Windows)
1999年08月04日 En Vogue is a (non-WYSIWYG) editor running on the Atari ST. It supports CSS1 & 2.
1999年05月29日 XMetaL (originally created by SoftQuad, now developed by JustSystems) authors & displays XML documents with CSS style sheets.
1999年05月25日 Corel's CorelDraw (since version 9) exports HTML + CSS.
1998年08月29日 Lewis Gartenberg has released a version 2 of a shareware tool, W2CSS which converts MS Word documents into HTML and CSS.
1997年12月04日 A CSS mode for Alpha, a Mac programming editor, is available. (Shareware, Mac)
1997年12月04日 Anansi is a project-oriented HTML-editor. (Free, Windows)
1997年11月04日 Coffeecup Software's StyleSheet Maker++ is a dedicated application for creating CSS style sheets.
1997年09月12日 Optima System's PageSpinner is a shareware HTML editor for MacOS with support for CSS.
1997年03月26日 Sausage Software's HotDog editor now supports CSS.
Adobe FrameMaker since version 5.5 can export HTML+CSS.

Other software

2023年07月24日 Antenna House has released AH Formatter V7.3. It supports formatting and rendering of documents using CSS for Paged Media. It includes supports for HTML, SVG and MathML. Complete standard conformance information as well as a comprehensive feature list can be found on the product page.
2022年07月07日 RealObjects released PDFreactor version 11.4.8, an HTML-to-PDF (and XML-to-PDF) formatter that runs either as a Web service or as a command line tool. It is also available as a Java library. It has support for, among other things, CSS Transforms, CSS Regions, Web Fonts, and running elements. Other features include support for HTML5, MathML, SVG, XSLT, JavaScript, PDF/A and accessible PDF. Version 11 adds, among other things, support for CSS grid, page floats, custom counter styles and OpenType ligatures. (Java. Free demo version.)
2019年09月30日 BFO released Big Faceless Report Generator version 1.1.70, an XML-to-PDF converter that uses CSS (level 2) for styling. It has its own XML vocabulary for making graphs. Can also be used as a Java servlet or as a library inside Java programs. Output can optionally be in PDF/A or PDF/UA.
2018年11月12日 Kozea published Weasyprint version 43, a converter from HTML + CSS to PDF. (Open Source, Python)
2015年10月21日 CSSOM.js is a CSS parser written in JavaScript. (Open Source)
2015年10月21日 shakespeare is a Haskell library that provides a template system for generating CSS style sheets (and other types of files). (Open Source)
2015年10月21日 CSS.pm is an object-oriented Perl library for reading, writing and manipulating CSS style sheets. (Open Source.) There are many more CSS-related Perl modules, see search on CPAN.
2015年10月21日 CSSTidy can do some rewriting on CSS style sheets, to "minify" them, rewrite longhand properties as shorthands, remove indentation, etc. (PHP or C++. Open Source)
2015年10月21日 cssmin is a CSS "minifier" as a Ruby library. (Ruby. Open Source)
2015年10月21日 clean-css is a "minifier" for CSS files (written in JavaScript, requires node.js) (Open Source)
2015年03月18日 Expected Behavior offers DocRaptor, an online service for creating PDF or XLS (Microsoft Excel spreadsheet) from HTML+CSS documents. The PDF service uses Prince for rendering. The XLS service converts HTML tables, optionally styled with CSS, to Excel spreadsheets. (Free trial)
2014年08月18日 Vivliostyle Inc. has launched an Open Source project to create the Vivliostyle formatter, a print formatter to produce high-quality PDF, using CSS. (See also the Vivliostyle Browser.)
2014年08月06日 Grid Style Sheets (GSS) is an extension of Constraint CSS (CCSS), which is itself an extension of CSS. GSS and CCSS are aimed at laying out boxes by means of constraints, instead of explicit positions or margins. An automatic constraint solver then finds the optimal solution. An implementation in JavaScript (built on the Cassowary constraint solver) is available.
2013年08月27日 Alexandre Brillant of JAPISoft has made available a few small, online tools for Web developers: hex/decimal conversion, base64 decoder, URL encoder, Less-to-CSS converter, random text generator, QR code generator and more. (Requires JavaScript)
2013年07月12日 PD4ML converts HTML+CSS to PDF or RTF. It supports inline and external CSS, can generate running headers and footers, footnotes, encrypted PDF, etc. Version 3.8.5 adds supports for SVG. Can also be used as a library in Java or Scala programs or as a servlet. The CSS parser is also available separately. (Java or .Net, free trial version)
2013年03月29日 The Publication Standards Project is an advocacy group set up in May 2012 by Nick Disabato to promote the use of standards in e-books software.
2013年03月29日 xhtml2pdf is an HTML/CSS to PDF converter written in Python. (Python, Open Source)
2012年12月06日 César Acebal put a new version of ALMcss3, a JavaScript implementation of the CSS Template Layout Module, on github.com. It implements the latest proposed syntax for that specification.
2012年08月30日 Tinycss 0.2 is a CSS parser for Python. (Open Source)
2012年08月30日 Cssselect 0.7 is a selectors-to-XPath converter for Python. (Open Source)
2012年05月26日 Stylus is a CSS preprocessor, providing a shorter syntax, macros, mathematical functions, etc.
2012年04月12日 Compass is a CSS authoring framework (preprocessor), built around Sass, with predefined "mixins" (snippets of CSS and Sass code) for many common tasks. (Ruby, Open Source)
2011年12月08日 CSS Agent is an extension (handler) for Microsoft's IIS Web server that acts as a preprocessor for CSS files. It provides simple constants and can also add prefixes to experimental properties. (Open Source, ASP.NET)
2011年11月18日 Closure Stylesheets is a CSS preprocessor. It provides various kinds of macros and can also check the syntax of and reformat style sheets. (Open Source, Java)
2011年11月17日 wkhtmltopdf is a command line program to convert HTML to PDF using the Webkit rendering engine and Qt. (Open Source, Unix/X, Mac OS X)
2011年06月11日 The AXR project aims to replace HTML and CSS with XML and HSS (a language inspired by CSS): no incompatibilities thanks to a single (Open Source) implementation; support for simple transformations; delegation & object orientation; no need for backwards compatibility with HTML/CSS; advanced layout controls, shapes and splines, etc.
2011年05月11日 CSS Crush is a CSS pre-processor that provides variables and macros. It can be used as a server extension or from the command line: source code and documentation. (Open Source, PHP)
2011年05月11日 .less (pronounced: dot-less) extends CSS with variables, mixins, operations and functions. .Less is a port of LESS to .NET. (Open Source, .NET)
2011年05月11日 LESS extends CSS with variables, mixins, operations and functions. LESS runs on both the client-side (Javascript for IE 6+, Webkit, Firefox) and server-side: "More" for Ruby-on-Rails or stand-alone. (Open Source, Ruby or JavaScript)
2011年03月23日 Sciweavers's online style generator works by repeatedly picking the best combination of color, shadow, border, and font style from a generated table of previews. (Warning: requires Javascript)
2011年02月21日 Unicorn, W3C's unified validator checks the syntax (and more) of style sheets.
2010年05月17日 YesLogic has released Prince 7.1, a program to produce PDF from HTML, MathML, SVG and generic XML. This version adds PDF actions and some experimental features, such as Web Fonts in WOFF, a 'table-baseline' property (especially useful for math), and a 'border-clip' property (to suppress parts of a border). Prince offers many (standard or proposed) CSS3 features, including hyphenation, rounded corners and footnotes. (Windows, Mac OS X, Solaris, Linux (i386), BSD; free personal license)
2010年05月13日 Version 3 of the Sass preprocessor for CSS adds a new input syntax that is a pure superset of CSS. This makes it easy to use Sass with existing style sheets. The Python-style indented syntax is also still available. Can be used stand-alone or integrated in Ruby-on-Rails. (Ruby, Open Source)
2010年03月16日 Daniel Glazman (of Disruptive Innovations) publishes a development version of JSCSSP, a CSS parser in JavaScript. There is also an online demo. The parser outputs the CSS OM. (JavaScript, Open Source)
2009年10月09日 TallComponents released WebToPDF.NET BETA which is a .NET component written in C# that converts HTML to PDF. The converter supports HTML 4.01, XHTML 1.0, XHTML 1.1 and CSS 2.1 including page breaks, forms and links. It passes all W3C tests (except BIDI). Aural features, script and HTML 4.01 frames are not supported. (.NET, free evaluation)
2009年04月24日 Alexis Deveria created a prototype in JavaScript for people who want to experiment with the April 2009 draft of CSS Template Layout. Earlier prototypes were by César Acebal (2006, updated in 2012, see above) also in JavaScript and Andrew Fedoniouk. (March 2009) in the HTMLayout embedded renderer. (JavaScript, Open Source)
2009年04月24日 Terra Informatica Software publishes the HTMLayout embedded HTML/CSS renderer with its own scripting language, extensive API, and SDKs for Windows and mobile devices. (Windows, free)
2008年05月05日 Aurelia Systems offers Aurelia Reporter, a printer driver that converts anything you can print to HTML + CSS, for Web pages or e-mail (Windows).
2007年03月07日 Julian Graham is developing SCSS and libRUIN. SCSS is a Scheme module for parsing, querying, and emitting style information. libRUIN is a C library that uses SCSS (through GNU Guile) for rendering documents on text terminals (Scheme & C, Open Source)
2007年02月12日 c THE dot . de|sign (Christof Hoeke) offers a CSS parser & library in Python called cssutils, currently version 0.9.1 beta. (Open Source)
2005年11月02日 Flying Saucer (current version is Beta R5) is a set of Java classes for rendering XHTML/XML + CSS (Java, Open Source)
2005年09月01日 CSSToXSLFO is a program that converts an XML document with a CSS style sheet to XSLFO. It has special support for XHTML. (Java, Open source)
2005年08月19日 Disruptive Innovations published CSS Selector builder 0.11, a program to interactively construct CSS selectors (written in XUL/XBL, requires Firefox)
2005年07月01日 Dzianis Koshkin started the project MYTHcode, a code library including parsers for CSS and XML. (Object Pascal, Open Source)
2005年04月08日 Tommi Lahtonen offers a program CSStoXML that parses CSS2 (based on CSS Parser) and outputs the parse tree as an XML file. Also includes an XSLT processor, to transform the tree to other formats (Java, free for non-commercial use)
2004年12月16日 Libcroco is a library (in C) for CSS. It supports SAC and CSSOM, can apply selectors to XML elements and has the beginnings of a renderer. (Open Source)
2004年12月08日 The CSS Parser (formerly Steady State CSS2 Parser) is available on SourceForge. It implements DOM2 Style and SAC (Java, Open Source)
2004年01月29日 David Baldwin sells ThtmlViewer, a browser component for use in programs developed with Delphi (4, 5, 6 and 7). (Windows, free demo)
2003年07月10日 Infinity Loop released new versions of upCast and downCast, which convert between XML+CSS and MS Word or RTF. Word and upCast together can also be used as a CSS editor: named styles will be saved as a CSS style sheet. (Many platforms, requires Java, free demo)
2002年10月11日 XMLmind has released version 2 of the XMLmind XML Editor, a graphical editor for XML, that supports CSS2 for on-screen layout and printing. (Java, free "Standard Edition," non-free "Professional Edition")
2002年01月08日 Tidy is a tool to clean up invalid HTML pages (such as generated by some "HTML" editors, unfortunately). It uses heuristics to replace bad mark-up with valid HTML and CSS. BBTidy is a Tidy cast as a plugin for BBEdit on the Mac. (Open Source)
2001年12月06日 The Apache project released Batik, an SVG browser. Supports SVG with CSS. (Java, Open Source)
2001年08月06日 A Perl CSS project has been started on SourceForge, to develop CSS-DOM and SAC libraries for Perl.
2001年07月09日 "xselect" is a C program that extracts all elements from an XML document that match a CSS selector. Part of the HTML-XML-utils package. (Open Source)
2001年04月27日 A Perl module that implements SAC, called CSS::SAC, has been written by Robin Berjon. (Open Source.)
2000年02月17日 Useful? Or not? Anyway, DeCSS is a tiny (Perl) program by Mr. Bad to strip all CSS from an HTML file.
1999年10月24日 SAC (W3C's Simple API for CSS) is in beta. Bindings to C and Java are provided.
1999年10月24日 flute 1.0 is W3C's CSS parser in Java.

Last updated Wed 01 Oct 2025 10:17:27 AM UTC

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