Tcpconns:simple package for rapid development of multi-threaded client/server solutions (JAVA 5+) with SSL/TLS.Includes:Certificate Authority,XML,Key Manager(pkcs#12,PEM,jks,uber,jceks),X.509/OpenPGP Signatures,and FTPServer.Latest release 18 oct 2009 Platforms: Windows, Mac, Linux

TCPFile is a friend to friend file sharing / instant messaging Java (1.6) program offering zipped and fully encrypted (RSA, AES) communication. Platforms: Windows, Mac, Linux

The Tiny Encryption Algorithm (TEA) was developed by David Wheeler and Roger Needham at the Computer Laboratory of Cambridge University. The variant used was developed by David Wagner. TEACrypt 80x86 is the porting of this algorithm to the 80x86 platform Platforms: Windows, Mac, Linux

Web log analyzer... Written in Java, aims to provides the usual host / page analysis. Can also do site graphing using graphviz, browser, os, worm and search engine identification, and country and session tracking. Platforms: Windows, Mac, Linux

TeleMon - Telenet Usage Monitor. An utility that allows you to see on an hour to hour basis just how much traffic you've generated on the internet. Platforms: Windows, Mac, Linux

Private-key, symmetrical (same password to encrypt and decode) file encryption with 8-bit to 2147483647-bit (2^3 to 2^31) encryption using my own algorithm and my own extension of MD5 (http://blog.robtoth.net/2009/06/tencryption-computer-programming.html Platforms: Windows, Mac, Linux

TTFTP provides a TFTP client for the Dallas Semiconductor TINI embedded Java computer. Currently TFTP support is provided as InputStream/OutputStream classes and as a command line. Plans for the future include integration into SLUSH. Platforms: Windows, Mac, Linux

A Log Extraction Utility for owners of the Belkin 4-Port Cable/DSL Gateway Router (Model F5230). Platforms: Windows, Mac, Linux

An anonymizing peer-to-peer file storage network, similar to Freenet and Gnutella - only better, of course. Platforms: Windows, Mac, Linux

The Hopefully Uncomprehensible Shell, HUSH, is a secure shell client andprogramming library written in and for Java. Platforms: Windows, Mac, Linux

A simple cross-platform ftp-client with a CLI and GUI coded in Java. Platforms: Windows, BSD, Mac, Linux

The NEO Project uses the NEO-c (Network Exchange Operation for Charity) platform to participate in various computing challenges and projects, and donates any winnings to the charities specified by its users. Platforms: Windows, BSD, Mac, Solaris, Linux

A small script that allow you to encipher a plaintext, decipher a ciphertext, using The Polybius Square cryptography. Platforms: Windows, BSD, Mac, Linux

The WarServer is a JSP 1.1/Servlet 2.2 compatible web application that allows a developer to safely execute shell commands and transfer files to and from the server it is deployed on. Platforms: Windows, Mac, Linux

Thumbnail steganography creates a thumbnail from a source image and stores data in it by altering it's color channels. To decipher the data, a new thumbnail is made from the original image and the differences between the pixels are calculated. Platforms: Windows, Mac, Linux

A simple invisible utility that regularly 'calls' home from the makers of HSTracker. It sends information back to a web server that could help identify your computer's location if it is stolen. Tickle works whether a user is logged in or not, as long as the computer has an internet connection. It... Platforms: Mac OS X 10.5 PPC , Mac OS X 10.5 Intel

With Tiger Envelopes you can stop snoops from reading your email. Same email client. No extra steps. One click to install on Windows and Linux. Configures Outlook, Thunderbird, and KMail. Supports GPG, PGP, Bouncy Castle encryption. Platforms: Windows, Mac, Linux

Tiptoe is the first privacy application to bring a "private browsing"-like feature to all sorts of applications. Tiptoe lets you chat, view images and movies, edit documents and more with the confidence that a trail of your actions won't be stored. If you need it to, Tiptoe can clean up your old... Platforms: Mac OS X 10.5 or later

TkSftp - an X wrapper for the OpenSSH sftp console client Platforms: BSD, Mac, Linux

A cross-platform FTP client with graphical user interface. Platforms: Windows, BSD, Mac, Linux