jQuery

jQuery is a javascript tool. It can simplify the development processing of ajax.

FYI:
jQuery
IBM developerWorks about JQuery: Simplify Ajax development with jQuery

open source web development tools

There is a open source tool list for web developers. It's really useful.

FYI:
http://www.andrewsellick.com/73/100-great-free-and-open-source-tools-for-web-developers

Email Obfuscator

This obfuscator can encode your e-mail.Example:
From: iHateSPAM@yahoo.com
To:

1. <SCRIPT type="text/javascript">var vV0a8N7b0x="Ha";var sg_xMk2VjU="AM";var d9gSbi8M="i";var ucN09="&#64yah";var fX3QDT="o.co";var q$sYr="o";var l8$LZKH="teSP";var lH8VK="m";document.write(d9gSbi8M+vV0a8N7b0x+l8$LZKH+sg_xMk2VjU+ucN09+q$sYr+fX3QDT+lH8VK);</SCRIPT>
2. &#105;&#72;&#97;&#116;&#101;&#83;&#80;&#65;&#77;&#64;&#121;&#97;&#104;&#111;&#111;&#46;&#99;&#111;&#109;
3. <IMG src="59X65131h4.png">
4. iHateSPAM @ yahoo . com
5. iHateSPAM[AT]yahoo[DOT]com
6. <TABLE style="display: inline-table; vertical-align: text-bottom;" border="0" cellpadding="0" cellspacing="0"><TR><TD>iHateSPAM</TD><TD>&#64</TD><TD>yahoo.com</TD></TR></TABLE>

URI:
https://sourceforge.net/projects/obfuscatortool/

Wink : Screen capture

URL: http://www.debugmode.com/wink/

Currently, wink is a freeware
--------------------------From wink official site---------------------------

# Input formats: Capture screenshots from your PC, or use images in BMP/JPG/PNG/TIFF/GIF formats.
# Output formats: Macromedia Flash, Standalone EXE, PDF, PostScript, HTML or any of the above image formats. Use Flash/html for the web, EXE for distributing to PC users and PDF for printable manuals.
# Multilingual support: Works in English, French, German, Italian, Danish, Spanish, Serbian, Japanese, Brazilian Portuguese and Simplified/Traditional Chinese.