Social Source Commons

Maintains your privacy by not allowing others to see which web sites you visited or what you did in Windows.

With akapost, you can send and receive emails from any of your existing email accounts but still keep your actual email addresses private.

Opensource DVD backup utility.

Inexpensive antivirus software for up to five computers.

BackupPC is a high-performance, enterprise-grade system for backing up Linux, WinXX and MacOSX PCs and laptops to a server's disk. BackupPC is highly configurable and easy to install and maintain.

The BCWipe utility is designed to securely delete files from the disk. Standard file deletion leaves the contents of the "deleted" file on your disk.

"Free Personal PC Audit" -- gives details about a PC it is run on such as computer specs, installed software, and vulnerabilities

BelSecure automatically checks security policies, configuration settings, and discovers other information about the host such as anti-virus status, application versions, security patches, user accounts and more.

Firewall software

Anti-virus software for desktops and file servers.

ChilliSpot is an open source captive portal or wireless LAN access point controller. It is used for authenticating users of a wireless LAN. It supports web based login which is today's standard for public HotSpots. Authentication, authorization and accounting (AAA) is handled by your favorite radius server.

CleanUp! is a powerful and easy-to-use application that removes temporary files created while surfing the web, empties the Recycle Bin, deletes files from your temporary folders and more.

CleanUp! frees disk space and reduces the "clutter" on your computer helping it to run more efficiently. It also can be used as a way to protect your privacy on the Internet. You can even instruct CleanUp! to securely delete files making it impossible to retrieve their contents using lower-level disk tools - just another way of protecting your privacy.

Secure data storage. The project uses information dispersal algorithms IDAs to separate data into 11 unrecognizable DataSlices™ and distribute them, via secure Internet connections, to 11 storage locations throughout the world, creating a storage grid.

Antivirus protection for desktops and servers.

Free firewall software

GSMK CryptoPhones are the first and only fully trustworthy solution for completely confidential mobile phone calls

Darik's Boot and Nuke ("DBAN") is a self-contained boot floppy that securely wipes the hard disks of most computers.

A CD & DVD burning tools for windows

Security and privacy protection software.

Inspired by EtherPEG (though, not owning an Apple Macintosh, I've never actually seen it in operation), Driftnet is a program which listens to network traffic and picks out images from TCP streams it observes. Fun to run on a host which sees lots of web traffic.

Gives computer users the ability to control what applications and programmes write to their drives, in real-time, preventing damage or corruption to personal files.

EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem interface. You can find links to source and binary releases below.

Eraser is used to permanently delete (wipe) sensitive data from your computer.

A free anti-spyware protection tool developed by GRISOFT for home use

Security suite for small businesses.

Firewall for Windows

Diagnostic utilities, optimization and Virus and Spyware protection

FreeUndelete can help lost data from accidentally deleted files

Freebyte Backup is a freeware backup program for Windows

Freenet is a decentralized censorship-resistant peer-to-peer distributed data store

ghost for unix - is a NetBSD-based bootfloppy/CD-ROM that allows easy cloning of PC harddisks to deploy a common setup on a number of PCs using FTP

The GNU Privacy Guard (GnuPG) enables people to securely exchange messages and to secure files with both privacy and strong authentication. GnuPG is a free software replacement for the PGP suite of cryptographic software.

GPGshell is a graphic interface for GnuPG that allows you to use the cryptographic software GnuPG in a easy and user friendly way

Handy Recovery is an easy-to-use data recovery software designed to restore files that have been deleted from computers and floppy drives

Surf anonymously, prevent hackers from acquiring your IP address, send anonymous email, and un-ban yourself from Blogs or message boards.

Hushmail is a Web-based e-mail service that lets you send and receive email in total security

invisiblog.com lets you publish a weblog using GPG and the Mixmaster anonymous remailer network. You don't ever have to reveal your identity

netfilter.org is home to the software of the packet filtering framework inside theLinux 2.4.x and 2.6.x kernel series. Software commonly associated with netfilter.org is iptables.

Jungle Disk is an application that lets you store files and backup data securely to Amazon.com's S3 ™ Storage Service.

KeePass is a free/open-source password manager or safe which helps you to manage your passwords in a secure way

A GNU/Linux utility for viewing/manipulating the MAC address of network interfaces

Macintosh Spyware Protection

Martus is designed to assist human rights organizations in collecting, safeguarding, organizing and disseminating information about human rights abuses. It enables grassroots NGOs to securely catalogue and store their records on off-site servers with easy

Backup your files, FTP folders, MySQL databases and websites.

MP3Stego will hide information in MP3 files.

Nsauditor Network Security Auditor is a network security and vulnerability scanner that allows auditing and monitoring network computers for possible vulnerabilities, checking network for all potential methods that a hacker might use to attack it.

Internet security tool that protects and does other functions against adware and spyware.

Antivirus software for home and small-office users.

Norton Internet Security 2006 provides protection from viruses, worms, Trojan horses, spyware, port scans, privacy intrusions, and lurkers that intercept personal information.

Firewall protection for a PC.

irus protection and system maintenance tools to prevent and repair common computer problems

Shadow 3 enables automatic, continuous back up of photo, music, data, and video files to virtually any attached storage device.

Hard-drive backup software.

Mailman mailinglist manager fork that includes OpenPGP and S/MIME support

OpenVPN is a full-featured SSL VPN solution which can accomodate a wide range of configurations, including remote access, site-to-site VPNs, WiFi security, and enterprise-scale remote access solutions with load balancing, failover, and fine-grained access-controls

An Open Source password manager that encrypts all information.

Security application suite for PCs.

E-mail client, from the Internet's longest-serving PC e-mail system

PGPi is the international variant of PGP (Pretty Good Privacy), a public key encryption program originally written by Phil Zimmermann in 1991.

Portable Gaim is the versatile Gaim instant messaging client packaged as a portable app, so you can take your IM settings and buddy lists with you. The Off-the-record plugin is also included for secure, encrypted messaging

PktFilter is a software that can configure the IPv4 filtering device driver found in Windows 2000/XP/Server 2003, with filtering rules following a syntax similar to IP Filter.

Portable Thunderbird is the popular Mozilla Thunderbird email client packaged as a portable app, so you can take your email, address book and account settings with you.

Firewall software.

PC security software.

Privoxy is a web proxy with advanced filtering capabilities for protecting privacy, modifying web page data, managing cookies, controlling access, and removing ads, banners, pop-ups and other obnoxious Internet junk.

Simple random password generator

RootkitRevealer is an advanced rootkit detection utility. It runs