Open Source Software for Windows
ShareX
ShareX is a free and open-source screenshot and screencast utility. The software lets you capture or record any area of your screen and share it with a single press of a key. ShareX also integrate well with popular online services and allows you to upload and publish images, text or other types of files. ShareX is avalible for free on Microsoft Windows.
Q#
A Microsoft developed domain-specific programming language used for expressing quantum algorithms. Q# share similar structures and elements with popular languages like Python, C#, and F#. The language comes bundled with the QDK (Quantum Development Kit) and quantum simulators, while also being extensible with Q# libraries. With Q# developers can build quantum algorithms used for quantum computing with a basic procedural model for writing programs with loops, if/then statements, and common data types.
LibreOffice Calc
LibreOffice Calc is a free and open-source spreadsheet tool part of the LibreOffice software package. With LibreOffice Calc users can manage spreadshets with its native Open Document Format (.ods), CSV (.csv) and other common formats like the Microsoft Excel format. The software is openly developed by The Document Foundation and the open source community while being released under a combination of license including MPLv2.0 and a secondary license GPL, LGPLv3+ or Apache License 2.0.
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.
Termius
Termius is the SSH client that works on both Desktop and Mobile. The application lets you organize hosts into groups while allowing share settings across users. Terminus uses end-to-end encryption to ensure your data remains safe and secure, while keeping connection and command history.
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.
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.
Total Commander
Total Commander is an Orthodox File Manager (OFM) for Windows. With Total Commander you can organize files and quick and easy navigate through your folder structure. It features an built-in FTP client, and tools for file comparison, archived files navigation and multi file renaming with regular expression.
Flameshot
Flameshot is a free and open source screenshot software that is powerful and intuitive. It uses a DBus interface that allows you effectively take screen shots, and make in-app screenshot editions, and also upload images directly to third-party services like Imgur.