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.
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WordPress
in 96 toolboxes Flexible open-source content management and blogging software with an active user and developer community and a wide variety of plug-ins or extensions available.
Drupal
in 92 toolboxes Very extensible CMS platform based on PHP and used by many NGOs - "Community Plumbing"
Firefox
in 218 toolboxes Popular open source web browser from Mozilla
Skype
in 138 toolboxes Free/cheap Internet telephony and handy IM tool.
del.icio.us
in 122 toolboxes Web based social bookmarking lets you share online finds and discover new ones. Ground zero for tagging.
OpenOffice
in 119 toolboxes Full-featured open source office productivity suite, featuring word processor, spreadsheet, presentation, drawing and database packages; free MS Office replacement.
Ubuntu
in 85 toolboxes User-friendly Linux distribution
Google Earth
in 51 toolboxes Google Earth combines satellite imagery, maps and the power of Google Search to put the world's geographic information at your fingertips.
Pidgin
in 59 toolboxes A multi-protocol Instant Messaging (IM) client
Thunderbird
in 84 toolboxes Mozilla's Open Source email client
MediaWiki
in 53 toolboxes Powerful wiki software built to support the Wikipedia project
Tor
in 18 toolboxes Free software for anonymous Internet communication.
Enigmail
in 16 toolboxes Enigmail 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
Flickr
in 108 toolboxes Web based photo sharing service
Debian
in 25 toolboxes Linux distribution with a very strong community
GIMP
in 57 toolboxes A freely distributed piece of software for such tasks as photo retouching, image composition and image authoring.
TinyURL
in 30 toolboxes URL-shortener (for emailing and general usability)
Mailman
in 22 toolboxes Mailing list manager
Wikipedia
in 74 toolboxes Wikipedia is a global and multilingual Web-based cooperative free-content encyclopedia.
LinkedIn
in 75 toolboxes Social networking for non-social purposes with a focus on professional development, networking for jobs and problem solving through the expertise of those in your extended network.
apache
in 35 toolboxes industry standard open source web server
Gmail
in 91 toolboxes Gmail is a web-based email with very user-friendly interface and huge storage capacity
Google
in 60 toolboxes The quintessential search engine.
upcoming.org
in 23 toolboxes Upcoming.org is a social event calendar, completely driven by people like you. Manage your events, share events with friends and family, and syndicate your calendar to your own site.
Jabber
in 11 toolboxes Open, secure, ad-free alternative to consumer IM services like AIM, ICQ, MSN, and Yahoo (see the IM quickstart).
phpMyAdmin
in 39 toolboxes web-based interface for managing MySQL
Social Source Commons
in 76 toolboxes The Social Source Commons is a “knowledge commons” that provides users with: a directory of software applications; links to relevant documentation, localization tools, services, user reviews; and a place to request tools/features.
OpenSSH
in 17 toolboxes Secure shell
