People who use OpenPGP and S/MIME aware Mailman also use:
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   Drupal
      in 159 toolboxes Drupal
      in 159 toolboxes
 add to my toolboxVery extensible CMS platform based on PHP and used by many NGOs - "Community Plumbing" 
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   Firefox
      in 345 toolboxes Firefox
      in 345 toolboxes
 add to my toolboxFirefox is the popular open source web browser from Mozilla 
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   Skype
      in 228 toolboxes Skype
      in 228 toolboxes
 add to my toolboxFree/cheap Internet telephony and handy IM tool. 
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   Ubuntu
      in 136 toolboxes Ubuntu
      in 136 toolboxes
 add to my toolboxUser-friendly Linux distribution. The Ubuntu promise: * Ubuntu will always be free of charge, along with its regular enterprise releases and security updates * Ubuntu comes with full commercial support from Canonical and hundreds of companies from across the world * Ubuntu provides the best translations and accessibility features that the free software community has to offer * Ubuntu core applications are all free and open source. We want you to use free and open source software, improve it and pass it on. 
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   Pidgin
      in 91 toolboxes Pidgin
      in 91 toolboxes
 add to my toolboxA multi-protocol Instant Messaging (IM) client 
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   Thunderbird
      in 137 toolboxes Thunderbird
      in 137 toolboxes
 add to my toolboxMozilla's Open Source email client 
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   Tor
      in 30 toolboxes Tor
      in 30 toolboxes
 add to my toolboxFree software for anonymous Internet communication. 
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   PuTTY
      in 71 toolboxes PuTTY
      in 71 toolboxes
 add to my toolboxA Free Telnet/SSH Client 
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   Enigmail
      in 28 toolboxes Enigmail
      in 28 toolboxes
 add to my toolboxEnigmail is an extension to the mail client of Mozilla / Netscape and Mozilla Thunderbird which allows users to access the authentication and encryption features provided by GnuPG 
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   Off-the-Record (OTR) Messaging
      in 19 toolboxes Off-the-Record (OTR) Messaging
      in 19 toolboxes
 add to my toolboxOTR allows you to have private (not just encrypted) conversations over instant messaging by providing: Encryption, Authentication, Deniability, and Perfect forward secrecy. 
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   Audacity
      in 96 toolboxes Audacity
      in 96 toolboxes
 add to my toolboxFree, open source software for recording and editing sounds. 
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   Adium
      in 62 toolboxes Adium
      in 62 toolboxes
 add to my toolboxAdium is a free instant messaging application for Mac OS X that can connect to AIM, MSN, Jabber, Yahoo, and more. 
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   GPG4Win
      in 8 toolboxes GPG4Win
      in 8 toolboxes
 add to my toolboxThe Gpg4win project aims at updating the Gpg4win Windows installation package with GnuPG encryption tool, associated applications and documentation on a regular basis. 
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   Gmail
      in 159 toolboxes Gmail
      in 159 toolboxes
 add to my toolboxGmail is a web-based email with very user-friendly interface and huge storage capacity 
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   GNU Privacy Guard (GnuPG)
      in 25 toolboxes GNU Privacy Guard (GnuPG)
      in 25 toolboxes
 add to my toolboxThe 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. Guardian Project port to Android: https://guardianproject.info/code/gnupg/ 
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   KeePass
      in 17 toolboxes KeePass
      in 17 toolboxes
 add to my toolboxKeePass is a free/open-source password manager or safe which helps you to manage your passwords in a secure way 
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   Portable Firefox
      in 9 toolboxes Portable Firefox
      in 9 toolboxes
 add to my toolboxPortable Firefox is a fully functional package of Firefox optimized for use on a USB key drive 
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   Pidgin Portable
      in 6 toolboxes Pidgin Portable
      in 6 toolboxes
 add to my toolboxPortable 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 
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   Portable Thunderbird
      in 10 toolboxes Portable Thunderbird
      in 10 toolboxes
 add to my toolboxPortable 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. 
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   Truecrypt
      in 19 toolboxes Truecrypt
      in 19 toolboxes
 add to my toolboxTrueCrypt is a free open source on-the-fly encryption (OTFE) program for Microsoft Windows XP/2000/2003 and Linux. It allows one to create a virtual encrypted disk within a file and then mount it as a real disk 
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   phpMyAdmin
      in 60 toolboxes phpMyAdmin
      in 60 toolboxes
 add to my toolboxweb-based interface for managing MySQL 
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   VLC Media Player
      in 79 toolboxes VLC Media Player
      in 79 toolboxes
 add to my toolboxVLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols. 
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   CCleaner
      in 28 toolboxes CCleaner
      in 28 toolboxes
 add to my toolboxCCleaner (Crap Cleaner) is a freeware system optimization and privacy tool. It removes unused and temporary files from your system - allowing Windows to run faster, more efficiently and giving you more hard disk space. 



