Applications:
AirCrack-NG: WP and WPA-PSK Cracking (Win)
Amahi: Server Solutions (Linux)
Apache: Webserver (Linux)
Bijk: Server Monitoring (Linux, Mac, Win)
Bedework: Calendar (Linux, Mac, Win)
Boa Server (Linux, Win)
BRL-CAD: Solid Modeling (Linux, Mac, Win)
Cacti: Network Graphing (Linux, Win)
Cendio (cf. rdesktop) (Linux, Win)
Codeignater Web App Framework (Linux, Mac, Win)
Droopy: Mini Web Server (Linux, Mac, Win)
Freenas: Network-Attach store (Linux)
Gnash: Flash Movie Player (Linux)
gPodder: Podcasts (Linux)
Gpredict: Satellite Tracker (Linux, Mac, Win)
Heritrix: Web archive (Linux, Mac, Win)
Liferay: Portal Framework (Linux, Mac, Win)
Liferea: Linux Feed Reader (Linux)
Lighttpd: Webserver (Linux)
Lvd By Less: Social Network Builder (Win)
Mirth: HL7 Inteface Engine (Linux)
Moonlight: Browser Plug-in (Linux, Mac, Win)
Namebench: Speedup Computer (Linux, Mac, Win)
Netboot.me: Internet Boot ( Linux, Mac, Win)
Netrik: Internet Viewer (Linux) Freenx Remote Desktop (Linux)
Omni Web Client (Linux, Mac, Win)
OpenExchance Server (Linux)
OpenReports: Web Report (Linux, Win)
Oropo: Task Distribution & Clustering (Linux)
PHP-Nuke: Portal System (Linux, Win)
Pooch: Parallel Processing (Mac)
Proteous: Application Integration (Linux, Win)
rdesktop: Remote Desktop Protocol (Linux, Win)
RFXN: Networks (Linux)
Second Life Client (Linux, Mac, Win)
SLRN: News Reader (Linux)
SparkleShare: (cf. DropBox) Sharing (Linux, Mac, Win)
Spicebird: E-Collaboration (Linux, Win)
Struts: Server Software (Linux, Win)
TightVNC: Remote Desktop (Win)
Tomcat: Servlet Container (Linux, Win)
Tonido: Personal Money, Cloud Server ( Linux, Mac, Win)
Torproject Network (Linux, M ac, Win)
WICD: Network Connector (Linux)
Wireshark: Network Analysis (Mac, Win)
Wordpress: Publishing (Linux, Win)
Bilbo: Blooger (Linux)
Blogging Apps:
Choqok: Blogger (Linux)
Browsers:
Aurora: Light Broweser (Linux, Mac, Win)
Avant Browser (Win)
Basillisk: Browser (Linux, Mac, Win)
Browzar: (Linux, Mac, Win)
Camino: Browser (Mac)
Chrome: Google Browser (Linux, Mac, Win)
Citadel: Groupware Server (Linux)
Conkeror Browser (Linux, Mac, Win)
Dillo: A Little Browser (Linux, Mac)
Elinks: Text Browser (Linux)
Epiphany: Web Browser (Linux)
Falkon: Browser (Linux, Mac, Win)
Flock: Browser (Linux, Mac, Win)
Firefox: Browser (Linux, Mac, Win)
Firefox: Portable (Win)
Galeon: Browser (Linux)
GreenBrowswer (Win)
Hv3 Browser (Linux, Win)
iCab: Browser (Mac)
Indywiki: Wikipedia (Linux, Mac, Win)
K-Meleon: Browser (Win)
Konqueror: Browser (Linux)
LibreWolf: Browser (Linux, Mac, Win)
Lunascape: Triple Engine Browser (Win)
Lynx: Text-Based (Linux, Mac, Win)
Mozilla: Browser (Linux, Mac, Win)
Netsurf: Browser (Linux, Win, Amiga, Haiku, BeOS)
Opera: Browser (Linux, Mac, Win)
Pale Moon: Browser (Linux, Win)
Safari: Free Download (Mac, Win)
SeaMonkey: Suite (Linux, Mac, Win)
Sleipnir Browser (Win)
Swiftweasel Optimized Firefox Browser (Linux)
TenFourFox: Firefox for G3-G5 PPC (Mac)
Tor: Anonymity (Linux, Mac, Win)
ViewVC CVS Interface Subversion Repo (Linux, Win)
VnStat: Network Traffic Monitor (Linux, Mac)
W3m: Browser (Linux)
Downloading Software:
Azureus (cf. Vuze) Bit Torrent (Linux, Mac, Win)
Bitornado: Bit Torrent (Linux, Win)
BitTorrent Download (Linux, Mac, Win)
Cyberduck: FTP, SFTP S3 Browser (Mac)
Deluge: BitTorrent (Linux, Mac, Win)
D4x (Linux)
EMule: File-Sharing (Win)
FileZilla FTP Downloader (Linux, Mac, Win)
Downloading Software:
Des Flashgot: Download (Linux, Mac, Win)
Fresh Download & Fresh Utilities (Win)
Frostwire: P2P BitTorrent (Linux, Mac, Win)
Giver: File Sharing Desktop (Linux)
Jdownloader: Download (Linux, Mac, Win)
Ktorrent (Linux)
LotaNZB: Usenet Download (Linux)
Metalink: Download (Linux, Mac, Win)
MirrorBrain: Download Director (Linux, Mac, Win)
Multiget (Linux)
ProFTPd: Download ( Linux)
qBitTorrent (Linux)
SpedDownload: High Speed(Mac)
Sushi:Download Offline (Linux)
Top Torrent Clients (Linux, Mac, Win)
Torrentflux-b4rt (Linux)
Transmission BitTorrent (Linux, Mac)
Uget: Download Manager (Linux, Win)
Utorrent: Download (Linux, Mac, Win)
Vuze (cf. Azureus) Bit Torrent (Linux, Mac, Win)
Wget: Downloading (Linux, Mac)
WinSCP: File SFTP, FTP Transfer (Win)
wxDownloadFast (Linux, Mac, Win)
E-Mail: Alternatives to Exchange:
Eudora (Penelope): Email (Mac, Win)
Evolution: Email-Client (Linux, Mac, Win)
ExQuilla: Thunderbird Exchange Addon (Linux, Mac, Win)
Horde: Webmail (Linux)
Nylas Mail: E-Mail Client (Linux, Mac, Win)
OGO: Groupware (Linux)
Sogo: Calendar Email (Linux)
Thunderbird: EMail (Linux, Mac, Win)
Zimbra: Email-Client (Linux, Mac)
E-Mail:
Claws: Email-Client (Linux, Mac, Win)
Cone: Email Newsreader (Linux)
Elm E-Mail (Linux)
IMAPSize: Thunderbird to Oulook (Win)
iRedmail: Email Solutions (Linux)
MH-E: Emacs Interface Email (Linux)
Mmh: Message Handler (Linux)
Mutt: E-Mail Client (Linux)
Pegasus Email (Win)
PGP: Apple's Mail (Mac)
Roundup: Free Webmail Client (Linux)
Scalix: Calendar Email (LInux)
Sylpheed: E-mail (Linux, Mac, Win)
Thunderbird: Portable (Win)
Free Phone (Free Calls):
Asterisk: Telephony Engine & Tool Kit (Linux)
Empathy: Instant Messenger (Linux)
Gnu Gatekeeper: H.323 gatekeeper (Linux)
Kiax: VoIP Calls to Asterisk PBX (Linux)
Kphone: SIP AU (Linux)
Linphone: SIP Video Phone (Linux, Win)
Sip Witch: Free Calls (Linux)
Skype: Free Calls (Linux, Mac, Win)
Instant Messengers:
aMSN: Instant Messenger (Linux, Mac, Win)
Adium Instant Messendger (Mac)
BitlBee: IRC Client (Linux, Win)
Chatzilla: IRC (Linux, Mac, Win)
Empathy: Instant Messenger (Linux)
Franz: Slack, WhatsApp, WeChat, etc. (Linix, Mac, Win)
Gagim: Instant Messenger (Linux, Win)
Google Voice/Chat (Linux, Mac, Win)
GyachI Improved: Mesenger (Linux, Win)
Instantbird: Messaging Client (Linux, Mac, Win)
Iptus: Instant Messager(Linux)
IRSSI: IRC (Linux)
Jabbim: Instant Messenger (Linux, Win)
Kmess: Instant Messenger (Linux, Win)
Monkey Messenger (Linux)
MRBS: Meeting Rooms (Linux)
Psi: Instant Messenger (Linux, Mac, Win)
Quassel: IRC (Linux, Mac, Win)
Spicebird: E-Collaboration (Linux, Win)
Telepathy: Communication Framework (Linux)
Trillian: Chat (Linux, Mac, Win)
XChat: IRC Client (Linux, Win)
Web Developing/Editors:
Amaya Web Editor (Linux, Mac, Win)
Arachnoid: Web Editor (Linux, Win, Mac)
BlueFish: Web Editor (Linux, Mac)
BlueGriffon: Web Editor (Linux, Mac, Win)
Composer: Suite-Web Editor (Linux, Mac, Win)
Django: Web Platform (Linux)
Foswiki: Wiki Web Editing (Linux, Mac, Win)
Joomla: Management (Linux, Win)
KompoZer (See Also Nvu) (Linux, Mac, Win)
Merb (See Also Rails) Web Development (Linux)
Openoffice Writer-Web Editor (Linux, Mac, Win)
Rails3: See Merb, Rails (Linux)
Screem: Web Editor (Linux)
Tiwiki: See Foswiki (Linux, Mac, Win)
Webkit (Linux, Mac, Win)
Internet Wireless:
B43/B43 Legacy: See Broadcom (Linux)
OpenFWWF: Wifi Firmware (Linux)