Greenshot
Free screenshot utility and integrated image editor. http://getgreenshot.org
Notepad2
Advanced text editor with syntax highlighting for many languages. http://www.flos-freeware.ch/notepad2.html
Crimson Editor
Crimson Editor is a tabbed (multi-document) text editor that supports window splitting, syntax highlighting for many programming languages, multiple levels undo/redo, spell checker, and many other editor functions. http://www.crimsoneditor.com/
AdvancedPDFUtilitiesFree
Advanced PDF Tool will allow you to split and merge pdf’s and remove password protection, allowing you to edit any pdf. http://misc.vrijpodium.com/data/uploads/dls/AdvancedPDFUtilitiesFree.exe
LibreOffice
LibreOffice is a complete office suite consisting of a word processor, spreadsheet, presentation software, and drawing software. All applications are fully featured. LibreOffice can open and save a variety of formats (including Word and Powerpoint). https://www.libreoffice.org/
Cygwin
Cygwin is a Linux-like environment for Windows. The installer allows you to select from a massive amount of software, too numerous to list here. Cygwin brings the best UNIX tools and utilities to Windows systems and also features an updating feature that helps you keep the newest versions of software installed. http://www.cygwin.com/
7-zip
7-Zip is a file archiver/compression tool which can achieve very high compression ratios with its native format, and improved compression ratios over PKZip/WinZip. Features support for: 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB. http://www.7-zip.org/
Virtual Desktops
This mini-mini software will allow you to switch between desktops during extensive multitasking. It is created by Sysinternals, currently part of Microsoft. https://docs.microsoft.com/en-us/sysinternals/downloads/desktops http://technet.microsoft.com/en-us/sysinternals/cc817881.aspx
Izarc
IZArc is an easy to use archiver that supports many compressed file-formats including 7-ZIP, ARJ, B64, BZ2, CAB, GZ, JAR, LHA, RAR, TAR, UUE, ZIP (along with many others). Features archive testing, repair, conversion, file search, disk spanning, encryption. http://www.izarc.org/
spiceworks
An IT asset management application that allows small businesses to use enterprise-quality tracking and auditing of IT assets at no cost. EDIT 2020: It seems a lot has changed at Spiceworks since I initially posted this in 2010. It is now a cloud-based platform running many more services. It still looks interesting for small businesses.… Continue reading spiceworks