Free + open-source software I use

After reading Lifehacker for a while, I started thinking about the software I use every day. I've been trying to better organize my files, downloads and apps, and it'd be handy to have a list of what I actually use and where to download it. I primarily use free or open-source software on Windows XP, both because it works well, and because it's freely available and I can download the apps anywhere, anytime I have Internet access.

I've organized the software by how often I use it - daily, frequently or infrequently. I've also included other standard programs like antivirus/security, office software and runtime libraries (.NET and Java).

Since it can take a lot of time to go through and google for an app, visit the site, find the download section and find the current version to download for thirty-some apps, I've included links to the download pages and the current version of the app, as of today, Friday November 30th 2007.

Linked downloads (second link) are EXE installers for Windows XP in English from North American servers. If that doesn't work for you, click on the download page (first link) and select what you do want.

Daily

• Firefox 2.0.0.10 Web browser

• iTunes 7.5 Media organizer and player

• KeePass 1.0.9 Password management

• Last.fm 1.3.2 Share your musical tastes and get recommendations

• Notepad++ 4.6 Text editor

• Pidgin 2.3.0 IM/chat client

• PuTTY 0.60 SSH/Telnet client

• Samurize 1.64.3 Desktop performance monitor/eyecandy

• SpeedFan 4.33 PC hardware monitor (no direct download link as requested by site maintainer)

• SyncBack Freeware 3.2.14 Backup files with profiles and schedules

• TreeSize Free 2.1 Show and sort disk usage by directory

• TrueCrypt 4.3a On-the-fly volume-based encryption (no direct download link as requested by site maintainer)
  

Frequently

• 7zip 4.42 Compression/archiving tool, understands popular formats (.zip, .rar, .tar.gz, .bz2)

• Google Gears Offline access to websites (still in beta)

• ImgBurn 2.3.2.0 Burn/edit/create CDs + DVDs

• InfraRecorder 0.44 Burn/edit/create CDs + DVDs, more user friendly (like Nero)

• Paint.NET 3.10 Image and photo editing (like Photoshop Elements)

• PDFCreator 0.9.3 Ghostscript Print any document to a PDF

• WinSCP 4.0.5 SCP/FTP client

• XnView 1.91.6 Complete Multi-Language Image viewer, converter and basic editor

Infrequently

• AutoHotKey 1.0.47.05 Windows and application automation via hotkeys

• AutoIt 3.2.10.0 Windows and application automation, scripting language

• DriveImage XML 1.2.1 Live system backup (like Acronis TrueImage or Symantec Ghost)

• DVD43 4.0.0 DVD decrypter

• Explore2FS 1.07 View files in Linux ext2/ext3 filesystems from Windows

• Handbrake 2.41 DVD -> MP4 converter (convert your DVDs for your iPod)

• HTTrack 3.42 Website copier for offline use

• K-Lite Codec Pack 3.5.3 Audio/video/compression codecs for MP3, MP4, DivX, QuickTime and many others, includes alternative media players like Media Player Classic

• NetStumbler 0.4.0 Wireless traffic analyzer/monitor/snooper

• PC Wizard 2008 1.81 Get details on your PC system info (like SiSoft Sandra)

• SharePod 3.6.2 Lightweight music management app for iPod

• Sumatra PDF 0.7 Lightweight PDF viewer

• Uptime NT 1.01 Show system uptime in Windows NT/2K/XP (command line)

• uTorrent 1.7.5 Small and featureful BitTorrent client

• VLC 0.8.6c Media player

• WinImage 8.1.0 Read and write disk images to/from floppy, CD, DVD (30-day shareware)

• winMd5Sum 1.0.1 Get/check MD5 checksums for files
  

• WinMTR 0.8 Network diagnostic/tracing tool, combines ping + traceroute

• Wireshark 0.99.6a Network analyzer/monitor/snooper

• X-Chat 2.8.4-1 IRC chat client

• YamiPod 1.7 Manage your iPod from your iPod

Antivirus/security

• Ad-Aware 2007 Free 7.0.2.5 Anti-spyware

• avast! 4 Home 4.7.1043 Anti-virus

• AVG Anti-Virus Free Edition 7.5.503 Anti-virus

Office software

• AbiWord 2.4.6 Lightweight word processor

• Gnumeric 1.6.3 build 2 Lightweight spreadsheet
  

• OpenOffice 2.3.0 with JRE, 2.3.0 without JRE Full open-source office suite, requires Java JRE
  

Runtime libraries
I've listed older versions as well since some apps (specifically system admin or backup software) require a specific older version. If you're not sure what you need, get the most recent version.

• Dot Net Runtime 3.5, 2.0 required for Paint.NET and other .NET applications

• Sun Java JRE 1.6.0_3, 1.5.0_14, 1.4.2_16

Let me know if you find this useful or have suggestions for the list.