Here is a list of some commonly used tools for web development

 

Name Description Download/Link
Firefox Developer Toolbar FileZilla is a fast, reliable, and secure FTP/SFTP client that allows you to transfer files between Web sites and PCs running Windows. All platform
Download
Adobe Browser Lab Adobe BrowserLab is a cross-browser testing service that provides screen shots of web pages in multiple versions of Internet Explorer, Firefox, Safari, and Chrome. There are multiple views and web diagnostic tools to help find bugs. Link to Adobe Browserlab
Browser Shot Browsershots tests your website's compatibility on different browsers by taking screenshots of your web pages rendered by real browsers on different operating systems. It is free and comprehensive, more than 100 browser/operating system combinations are available. However, it usually takes longer time. Link to site
W3 HTML Validator This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. Link to site
W3 CSS Validator Finds errors and potential problems in Cascading Style Sheets. Link to site
W3 MoibleOK Checker This checker performs various tests on a Web Page to determine its level of mobile-friendliness. The tests are defined in the mobileOK Basic Tests 1.0 specification. A Web Page is mobileOK when it passes all the tests. Link to site
Opera Mini Simulator The Opera browser company makes a special browser for mobile devices called the Opera Mini. Opera provides a simulator using that browser that is helpful when testing your site for accessibility of mobile devices. The simulator takes a few seconds to open. Be patient. Read more on how to use it. Link to Demo
Download Opera Mini
XAMPP, MAPP, LAPP XAMPP is a free and open source cross-platform web server package, consisting mainly of the Apache HTTP Server, MySQL database, and interpreters for scripts written in the PHP and Perl programming languages. Link to Download
     
     
     

 

adobe browser lab

Watch this movie about Adobe Browserlab

Browsershots or some other websites offer preview services. However most of them require a waiting period of an hour or more before you get the preview screenshots. With Adobe BrowserLab, you can test you entire new web site on different most common web browsers in different operating systems for free. You get your preview result within seconds not hours. All you need is have a free adobe account to start testing your web pages in the major browsers shown here. Just go to browserlab.adobe.com sign up for an account.

Unfortunately most popular European browser Opera is not on the list, you still need to use BrowserShot or others to check how your pages render in Opera.