Traffic analysis resistant messaging with Gio based user interface

Subgraph OS issues repository

TextSecure client package for Go

A simple (and rather ad-hoc) port scanner for Tor hidden services.

Bram's steganographic framework

Onion Plugin for Apache

Contains instructions and scripts to create a TAILS live cd that will boot on OSX without any additional software installed (no REFIT, etc.)

ICMP and DNS tunneling via IPv4 and IPv6

IP geolocation web server

OTR p2p chat

OpenSSL Privilege Separation

Open Sim Kit (OSK) is FOSS software for editing the content and functions of SIM cards.

Encrypted Text Messaging

Pond

GPU-based Onion Hash generator

Objective-C Tor Wrapper Framework for iOS

Browser extension for OpenPGP encryption with Webmail

A secure calling app for Android.

Fast and Full-Featured SSL Scanner

Off-the-Record Messaging Protocol implemented in JavaScript

Current development of SSLyze now takes place on a separate repository

The Purple Onion Router: a managed implementation of the Tor Onion Router

Run Martus on Gnu/Linux (Ubuntu and other Debian flavors)

An open-source, privacy-enhancing web browser for iOS, utilizing the Tor anonymity network

Torbutton for Thunderbird and related *bird forks

Web chat client with client-side cryptography.

experimental library able to perform anonymous connection without performance downgrade

BinCrowd Plugin for IDA Pro