Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation semantics (the look and formatting) of a document written in a markup language. Its most common application is to style web pages written in HTML and XHTML, but the language can also be applied to any kind of XML document, including plain XML, SVG and XUL.

Every Web Developer and Designer is looking for better experience and they try their best to write better CSS code, fortunately  there are many useful tools out there to help. In this article i have compiled a list of 13 useful CSS  tools which help me a lot i hope you will find them helpful.
1.Clean CSS:


CleanCSS is a powerful CSS optimizer and formatter. Basically, it takes your CSS code and makes it cleaner and more concise. The CSS optimizer was originally developed by some awesome dudes over at CSS Tidy. They built the program and have made it free for everyone to use.

2.CSS Lint:

CSS Lint is a tool to help point out problems with your CSS code. It does basic syntax checking as well as applying a set of rules to the code that look for problematic patterns or signs of inefficiency. The rules are all pluggable, so you can easily write your own or omit ones you don’t want.
3.CSS Menu Builder:



Need a menu for your website or a client, use this free css menu builder and create some pretty sweet menus for free.

 

4.CSS Pivot:


 

Add CSS styles to any website, and share the result with a short link and Invite others to submit improvements for your website.

 

5.CSS Prism:


This is a CSS color spectrum inspector. Input the path to any .css file, and it will output an easy to scan display of all hex colors from the file. Unwanted colors can be edited via a Photoshop-like color picker and the resulting .css file can be downloaded for your convenience.

6.CSS Sorter:


 

CSS Sorter helps you to sort Cascading Style Rules (CSS) alphabetically.

 

7.CSS Type Set:



This is a hands-on typography tool allowing designers and developers to interactively test and learn how to style their web content. You can set the font family, size, color, letter-spacing, word-spacing, line-height and etc. It will automatically generate the CSS file for you. You can see the changes instantly. It is a really great tool for experimenting a suitable font type for your site.

8.Layer Styles:


A HTML5 app for creating CSS3 in a intuitive way.

9.CSS layout generator:


 

Generating multi-column and grid layouts with CSS 2.0 techniques using %, px, or em. The amazing point of web design is you can use different techniques to achieve the same design. In Pagecolumn you can find out different layout patterns, i.e. HTML code to design your multicolumn layouts.
10.PrefixMyCSS:


 

You can now use powerful CSS3 techniques, and don’t waste your time writing each properties. First, write your code for your loved browser. Then, come here, paste your CSS code in the first block, and prefix! All vendor prefixes are added to your code. You can safely replace your old code. That’s all!
11.Primer CSS:


 

Primer undercoats your CSS by pulling out all of your classes and id’s and placing them into a starter stylesheet. Paste your HTML in to get started.

 

12.Skyline Css Tool:




Online CSS Authoring Tool Sky CSS  allows you to create CSS classes almost without using manuscript code. JavaScript compatible browser is needed for the proper functioning.

 

13.The Web Font Combinator:

 

This tool was created in order to preview web font combinations. There have been various printed collections of font examples that the reader can combine in order to see how a header and body font work together. However, there were no tools on the web that replicated this behavior that also used current web font technologies.