LibreOffice
Free office productivity suite (word processor, spreadsheet, presentations) compatible with all major office suites.
Desktop Applications
GanttProject
Gantt Chart based project scheduling and management tool.
Money Manager EX
Personal Finance Manager to track where, when and how your money goes.
7-Zip
File archiver - compress files (often much more than 50%) to take up less space for backups, emails.
Notepad++
Text editor with special features for programmers and web developers such as syntax highlighting, code folding/outlining and more.
Notepad2
Text editor with the look and feel of Notepad but with more features.
Sumatra PDF
Viewer of PDF files, eBook files (ePub, Mobi) and .XPS files.
NAPS2
Easily scan paper documents to PDFs.
PDFsam
Split, Merge, Rotate, Mix and Extract pages from PDF files.
WinMerge
Compare folders, files (including text, image files) visually and allow differences to be merged.
ConvertAll
Convert a quantity of a unit to a quantity of another unit.
Tomboy-ng
Simple note-taking for your desktop.
Joplin
Note taking and to-do application with synchronisation capabilities.
gImageReader
Recognize text from images and PDFs to editable text.