Recommended free software
Microsoft Windows
Audio/Video
- Audacity
- Audio editor and recorder.
Internet/Mail
- BlueGriffon - HTML-editor.
- Firefox - Webbrowser.
- Thunderbird - Nice emailclient.
Office
- Artweaver - Creative painting.
- Foxit Reader - Small fast PDF-reader, very nice.
- Gimp - Image editor with support for layers.
- Inkscape - Vector graphics.
- IrfanView - Manipulate, convert and view pictures.
- LibreOffice - Office suite based on OpenOffice.
- MiKTeX - TeX for Windows.
- PDFCreator - Create PDF-files.
- PrimoPDF - Another free PDF-creator.
- Scribus - Libre Desktop Publishing.
Programming
- ConTEXT - Programmers editor.
- Cygwin - Unix-like environment, C/C++, X-server, ...
- Eclipse - Developer environment (C/C++, Java, PHP, Ruby).
- Emacs - Programmers editor.
- NetBeans - Developer environment (C/C++, Java, PHP, Ruby).
- SourceTree - Git & Mercurial client.
- WinMerge - Visual differencing and merging of text files.
Scientific
- Octave - Free Matlab clone.
- R - Free S clone (statistical computing)
- Scilab - A scientific software package for numerical computations.
- SciPy - A Python-based ecosystem of open-source software for mathematics, science, and engineering.
Utilities
- 7-zip - Winzip alternative.
- Bitvise - SSH client.
- CD Burner XP - CD/DVD burner software.
- FileZilla - SSH file transfer.
- Forticlient - Antivirus and Webfilter.
- MobaXterm - SSH client with integrated X-server.
- Putty - SSH login-client.
- VcXsrv - X-server.
- VirtualBox - Run virtual machines.
- WinCDEmu - Mount disc images.
- WinSCP - SSH file transfer.
Apple macOS
Audio/Video
- Audacity - Audio editor and recorder.
Internet/Mail
- BlueGriffon - HTML-editor.
- Firefox - Webbrowser.
- Thunderbird - Nice emailclient.
Office
- Gimp - Image editor with support for layers.
- Inkscape - Vector graphics.
- LibreOffice - Office suite based on OpenOffice.
- MacTeX - TeX for macOS.
- Scribus - Libre Desktop Publishing.
Programming
- Aquamacs - Programmers editor (Emacs).
- Eclipse - Developer environment (C/C++, Java, PHP, Ruby).
- GCC - GCC with Fortran and OpenMP.
- LLVM - The compiler intrastructure Xcode is based on.
- NetBeans - Developer environment (C/C++, Java, PHP, Ruby).
- SourceTree - Git & Mercurial client.
- Xcode - Apple:s offical developer environment.
Scientific
- Octave - Free Matlab clone.
- R - Free S clone (statistical computing)
- Scilab - A scientific software package for numerical computations.
- SciPy - A Python-based ecosystem of open-source software for mathematics, science, and engineering.
Utilities
- Cyberduck - SSH file transfer.
- FileZilla - SSH file transfer.
- Forticlient - Antivirus and Webfilter.
- FUSE for OS X - Native file handling capabilities via 3rd-party file systems (SSH-filesystem, NTFS, ...)
- Macfusion - GUI to FUSE.
- VirtualBox - Run virtual machines.