Manytools.org
Manytools is a collection of tools to automate the repetitive jobs involved in webdevelopment (or any other job). I'd like to extend this toolbox to make a useful collection for all kinds of visitors. So if there's any tool you'd like to see included, please let me know. I'll be happy to add it if it can somehow make your job a bit easier!
Network Tools →
Tools for network admins, sysadmins & webdevelopers.
HTTP, HTML & Text Tools →
Generate Favicon, Data-URI, Lipsum, passwords, encode/decode strings , hide e-mail & check Browser headers/language.
CSS3 Tools →
Easily generate CSS3 border radius, box shadow, text shadow & gradient code
Image Tools →
Easily convert images to Black & White or Sepia, or colorize them to suit your design.
Tools for Social Media →
Decorate your FB/Twitter status updates with icons, emoticons & upside-down text.
Finance →
Finance calculators to determine monthly loan or mortgage payments or compound interest on your savings.
Hacker Tools →
Convert Image to ASCII/ANSI, Online Steganography (hide message inside image), Image to C++ Byte array converter.
Handy Tools →
Some handy tools, calculators, converters & generators.