Web-based animation suite its original goal was to be a usable Flash IDE alternative, but has evolved into a cross-platform and cross-format animation tool, primed to support Animated GIFs, SWF (Flash), SVG Animations, and more. There are browser based and stand alone applications.
Adobe® BrowserLab is an online service that helps ensure your web content displays as intended. Accurately preview web pages across multiple browsers and operating systems, navigate links, and use diagnostic tools to optimize websites efficiently. This Adobe CS Live service is free at least until April 2012 and it is also available within Dreamweaver, as a Firebug add-on for Firefox, Safari or IE.
Cage app, online collaboration tool – excellent tool suitable for any size workgroups.
Very useful selection of tools for every web designer - advanced eyedropper, color picker, palette viewer. You also get a CSS gradient generator and an analyzer that finds the CSS rules responsible for the page’s colors.
“COLOURlovers is a creative community where people from around the world create and share colors, palettes and patterns, discuss the latest trends and explore colorful articles.” Part design app and part design blog. Color codes are provided in both HEX and RGB.
CSSed is a small developer editor and validator, which try to ease the CSS editing. It is an Open Source project, it means that you can download the program but also its source.
Edit images quick and easy with HTML5 online editor. Many tools and filters are available. One of the best options is that you can embed this tool in your website too.
Reliable open source FTP, probably the most popular in the world. Supports FTP,FTPs and sFTP. Recently added support for IP6.