Free online file conversion

Zamzar is a free service which converts a range of formats and sends them conveniently to your e-mail.

Freeware Antivirus for Windows XP and Vista

AVG Free is the free version of Grisoft's AVG Antivirus. Highly recommended for all Windows users. Blocks viruses and spyware, detects more than expensive software I have used previously. (PC/Freeware)

Free codec pack for Windows XP

The Combined Community Codec Pack is a frequently updated codec package which will cure most video/sound codec issues - click here for a list. It comes with two utilities - Media Player Classic and Zoomplayer which are both freeware media players.

From the CCCP FAQ: "the CCCP was created to replace the video playback packs provided by several anime fansub groups in favor of a single reliable pack capable of decoding practically any groups' files - without breaking compatibility for other formats. Since then it has grown into a pack that can decode more or less anything that you will run into during your travels on the internet."

Useful Firefox addons for Web Designers

• Screengrab Saves entire webpages as images
  

• Fireshot is a Firefox extension that creates screenshots of web pages. Unlike other extensions, this plugin provides a set of editing and annotation tools, which let users quickly modify captures and insert text and graphical annotations. Such functionality will be especially useful for web designers, testers and content reviewers. It's possible to choose whether entire web page or only visible part of this page should be captured. Screenshots can be uploaded to server, saved to disk (PNG, GIF, JPEG, BMP), copied to clipboard, e-mailed and sent to external editor for further processing.

• Link Checker Highlights broken links on the page
  

• IE Tab Embeds Internet Explorer within Firefox for cross-checking.

• Firebug Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page... Firebug 1.2 requires Firefox 3. Firefox 2 users should install the older 1.05 version of Firebug.

• Flash Block Temporarily block Flash to view noscript content or view the page or view the page as someone who doesn’t have Flash (or the latest version) would see it.
  

• Web Developer Toolbar Useful features for web developers.

• Image Zoom

• Web Macros Automate repetitive tasks in Firefox.

• GspaceThis extension allows you to use your Gmail Space (4.1 GB and growing) for file storage. It acts as an online drive, so you can upload files from your hard drive and access them from every Internet capable system. The interface will make your..
  

• ColorZilla

• Javascript Debugger Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aims to provide a powerful JavaScript debugging environment for Mozilla based browsers.

• Codetch Get the feel of Dreamweaver in a Firefox extension. Edit your documents right next to your web pages as you surf.
  

• MeasureIT Draw out a ruler to get the pixel width and height of any elements on a page.

• AutoFill Forms Autofill Forms enables you to fill out web forms with one click or a keyboard shortcut.

• SeoQuake is a Mozilla Firefox extension aimed primarily at helping web masters who deal with search engine optimization and internet promotion of web sites. Seoquake allows to obtain and investigate many important SEO parameters of the internet...
  

• Ook Ook? Video Ook! enables you to download embedded videos from several systems (such as YouTube, Google Video, Metacafe and many more). ...
  

Advanced Google searching

There are many ways to improve your Google search results. These include:

• Google Advanced Search - oft ignored by searchers, Google Advanced Search is an easy way to specify exactly what you are searching for.
  
  
• Using Google Advanced Operators allow you to refine your search to a particular site, page title or URL.
  
  
• The Google cheatsheet, a website that summarises the advanced operators and also has a downloadable PDF of the page.
  

Display PSD icons in Windows

PSDThumb is a CMD (installer) file that will allow you to view PSD files as Thumbnails of their content in Windows Explorer. Scroll down below the main list for the download link.

Freeware Actionscript decompiler

Flare is a tiny Windows shell-extension which allows you to output the Actionscript used in a SWF file to a text file.

Freeware HTML Notepad

HTML Notepad is a freeware notepad replacement with syntax highlighting. It also features a range of shortcuts allowing you to quickly update HTML. (PC/Freeware)

There is also a good list of freeawre HTML editors for Mac and PC here.

Freeware Windows Explorer alternative

ExplorerXP is a fast Windows explorer replacement which allows you to browse directories in different tabs, save folder groups and mass-rename files according to wildcards. (PC/Freeware)

Freeware CSV Viewer

CSV Viewer - This viewer allows you to open CSV (comma separated value) files and save them to HTML. (Freeware, PC) For the Mac users there's Super CSV, which is a multi-platform reader and editor of CSV files (Mac and PC).