Encrypter - md5,sha1
MD5 Crack - remote databases
Base64 Encoder - and decoder
Port Scanner - Remote and Local TCP(UDP?)
Whois Lookup - com, ne, org, info, bi, us, co.uk, org.uk, ltd.uk, ca, edu, com.au, net.au, de, ws, sc
Source Viewer - simple html source code
Random Wordlist - load from http, has some built-in
Server Vars - explore ENV, COOKIE, SESSION, SERVER, GET, POST, REQUEST super vars.
Mass Mailer - simple, but effective(works?)
Disk Monitor - very, very simple. displays space usage of chosen disk
Temp Conversion - celcius, fahrenheit, kelvin, rankine
Calculator - +, -, /, *, sqrt, sin, cos
CPU Graph - GD requires. neat thing..
PHP Info - phpinfo() with a stylesheet
Status - random stuff..