Free Software for Windows
muCommander
muCommander is a lightweight, cross-platform file manager with a dual-pane interface. The application runs on any operating system with Java support including macOS, Windows, Linux, BSD and Solaris. Featuring a virtual filesystem with support for local volumes, FTP, SFTP, SMB, NFS, HTTP, Amazon S3, Hadoop HDFS and Bonjour. With muCommander you can quickly copy, move, rename files, create directories, email files and zip files can be modified live without the requirement of re-compressing entire archives. muCommander is released as free and open source software under the GNU General License.
Shotcut
A free and openly developed video editing software that works cross-platform. Shotcut is developed on the MLT Multimedia Framework and is avalible for FreeBSD, Linux, macOS and Windows. Shotcut is released as open-source software under the GPLv3.
Sumatra PDF
With Sumatra PDF you can view documents and manipulate PDF files. Sumatra PDF is a free and open-source document viewer that supports a variety for file extensions, including PDF, CHM, DjVu, EPUB, FB2, MOBI, PRC, OXPS and comic book archive files like CB7, CBR, CBT, CBZ.
USBImager
A really simple open-source, GUI application that writes compressed disk images to USB drives and creates backups. USBImager is avalible for Linux, macOS, and Windows.
TV-Browser
TV-Browser is an TV listings application that gets the daily TV program from the internet and shows it nativley in a neat user interface. The software runs on every system and platform with the Java runtime environment installed. With TV-Browser you can manage your TV listings your way, thanks to TV-Browser built in theming and plugin support.
Winyl
Winyl is a free and open-source, lightweight music player and music library application for orginizing and playing audio on Microsoft Windows. The application provides rich audio codec support, a simple UI and offers a intuitive way to organize all your music. Much like Winamp, the application also provides a dedicated radio section that can be used to listen to live radio.
GParted
GParted is a free and open source partition editor for graphically managing your disk partitions. With GParted you can resize, copy, and move partitions without data loss. The software enables you to grow and shrink your C: drive, create new space for operating systems and attempting data rescue from lost partitions on your hard drives.
NW.js
NW.js is a framwork for building desktop applications with HTML, CSS, and JavaScript. With NW.js you can call Node.js modules directly from DOM which enables you to write applications using technologies native to the browser.
Universal Media Server
Universal Media Server is a free and open-source media server capable of serving videos, audio and images to any DLNA-capable device. The software is regularly updated and has more features than any other media server, including paid media servers. Universal Media Server supports streaming to consoles like PS3, Xbox One, Xbox 360 and TVs like LG, Panasonic, Philips, Sharp, Samsung, Sony, and Vizio.
HandBrake
HandBrake is a free and open-source video transcoder. With HandBrake you can convert video from nearly any format to a selection of modern, widely supported codecs. The software makes it easier to rip videos from a DVD to any data storage device. Allowing you to digitalize your movie collection and bring them with you into a new age.