Recommendations
- Applications
- Extensions
- Sites

Recommendations

Applications

Windows

AutoHotkey - mouse and keyboard macro program
Avira AntiVir PersonalEdition Classic - the best free antivirus
CPU-Z - CPU information tool
CDBurnerXP - the best free CD/DVD recording app
Daemon Tools - virtual CD/DVD drive
DriveImage XML - program for imaging and backing up partitions and logical drives
DVD Identifier - DVD media information tool
Far Manager - the best file manager
Find and Run Robot - keystroke launcher
foobar2000 - advanced audio player
Free Download Manager
HxD - hex editor and disk editor
InfraRecorder - open-source CD/DVD burning app
IsoBuster - CD/DVD and BD/HD data recovery software
Ken Rename - multi-file rename utility
Media Player Classic
Mp3tag - tool to edit metadata (ID3, Vorbis Comments and APE) of common audio formats
MyDefrag - disk defragmenter and optimizer
Notepad++ - source code editor and Notepad replacement that supports several languages
PDF-XChange Viewer - PDF viewer with comments and annotations support built-in
PDFCreator - virtual printer to PDF file
PortableApps Suite - simply portable apps
PuTTY - telnet/ssh client
Recuva - file recovery tool
Sysinternals Suite - must-have tools
System Info for Windows - gathers detailed information about your system properties and settings
TortoiseSVN - the coolest interface to subversion SCM.
UltraVNC - the best VNC client/server for Windows
VirtualDub - a video capture/processing utility
Xming X Server
XnView - the best graphic and photo viewer
WinMerge - visual text file comparison and merging
zFTPServer Suite - the best FTP server for Windows

Linux

Arno's IPtables-firewall script
cacaview - lightweight text mode image viewer
cacti - web-based graphing tool designed as a frontend to RRDtool's data storage and graphing functionality
ekg - gadu-gadu text client
elinks - advanced and well-established feature-rich text mode web browser
gawk - great pattern scanning and processing tool
htop - interactive process viewer for Linux
lshw - small tool to provide detailed information on the hardware configuration of the machine
Meld - visual diff and merge tool
moc - music on console, i.e. ncurses powerful player
nedit - multi-purpose text editor
nginx - high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server
rtorrent - BitTorrent client for ncurses
sed - great stream editor
Slackware - the most unix-like linux distribution
slapt-get - APT like system for Slackware package management
ubuntu - probably the most popular linux distribution
valgrind - instrumentation framework for building dynamic analysis tools

Cross-platform

7-zip - file archiver with a high compression ratio
Code::Blocks - C++ IDE
Eclipse - development platform
Firefox - the most flexible web browser
irssi - the best IRC client
Java ;-)
Launchy - keystroke launcher
MPlayer
Qt Creator - very robust and promising C++ IDE
RapidSVN - subversion client working even in Windows 98
SpeedCrunch - fast and usable calculator
subversion - version control system
testdisk - powerful partition recovery software
TightVNC - VNC client/server
VMware Server - heavy virtualization software
VirtualBox - light virtualization software
ZSNES - SNES emulator

Extensions

Firefox

Adblock Plus
Autohide
AutoPager - automatically loads next pages when you reach the end of a page
Console2 - let's you display errors filtered by type (Errors, Warnings, Messages), language (JavaScript, CSS, XML) and context (Chrome, Content)
DownloadHelper - downloading and converting videos from many sites
DownThemAll! - powerful yet easy-to-use extension that adds new advanced download capabilities to your browser
Firebug - integrates with Firefox to put a wealth of web development tools at your fingertips while you browse
Flashgot - the best Firefox download manager integration
FoxyProxy - advanced proxy management tool
GMarks - helps you sync & manage your bookmarks with Google Bookmarks
MediaPlayerConnectivity - allows you to launch embed video of website in an external application with a simple click
MR Tech's Toolkit - tools needed to install and manage extensions and themes locally
PDF Download - tool for handling and viewing Web-based PDF files
Read It Later - saves pages of interest for future reading
SkipScreen - skips unnecessary pages on download sites (rapidshare, megaupload, etc.)
Split Pannel - allows you to view see two pages simultaneously
Stylish - allows easy management of user styles
Tab Mix Plus - the cleanest tab enhancement
Text Link - allows URI texts written in webpages to be loaded by double clicks
Uppity - navigate up one level (directory)
User Agent Switch - adds a menu and a toolbar button to switch the user agent of the browser
YSlow - analyzes web pages and why they're slow based on Yahoo!'s rules for high performance web sites

vim

a.vim - commands to swtich between source files and header files quickly
OmniCppComplete - C/C++ omni-completion with ctags database
rails - Ruby on Rails: easy file navigation, enhanced syntax highlighting, and more
snippetsEmu - attempt to emulate TextMate's snippet expansion
vcscommand - CVS/SVN/SVK/git integration plugin

Windows UI

8start Launcher - portable application launcher
AlfaClock Free - enhances your taskbar clock (tray clock) with fully customizable clock display, alarms, time synchronization, popup calendar, time speaking and more
Alt-Tab Replacement - in addition to seeing the icon of the application window you are switching to, you will also see a preview of the page
Emerge Desktop - simple and fast shell
ObjectDock - enables users to organize their shortcuts, programs and running tasks into an attractive and fun animated Dock
Power Menu - adds extra menus: Always On Top, Transparency and Minimize To Tray.
RK Launcher - bar at the side of the screen that is used to quickly launch shortcuts
Samurize - advanced system monitoring and desktop enhancement engine

Eclipse & derivatives

AnyEdit - adds several new tools to the context menu of text-based Eclipse editors (e.g. Compare with Workspace/External File), to output consoles (Save to file), to Eclipse main menu (e.g. Convert Tabs ↔ Spaces) and editor toolbar
Aptana Studio - robust, JavaScript-focused environment for building dynamic web applications
jigloo - allows you to build and manage both Swing and SWT GUI classes

Mobile devices

MIDlets

Opera Mini - the best mobile web browser
Mobilne Jazdy

MP3 Players

Rockbox - open source firmware for mp3 players, written from scratch, which runs on a wide range of players

Sites

Information

Repositories

XP-Dev.com - Agile Development Tools - free subversion hosting and project tracking
repo.or.cz - Public Git Hosting
GitHub - a web-based hosting service for projects that use the Git revision control system