Open Source Software for Windows
EiffelStudio
EiffelStudio is an Integrated Development Environment that enable you to produce correct, reliable, maintainable software and control the development process. The IDE is specifically designed for the Eiffel programming lanaguge and comes with a debugger and browsable editor that makes it easy to navigate parts of your system and track down bugs, and quickly fix them.
Aseprite
Aseprite is a pixel art software for macOS, Linux and Windows with which you can create animated sprites and graphics. Aseprite is much used tool in the pixel art and indie game development scene where the tool allow designers to gets down to the nitty-gritty and create amazing pixel sprites and animations.
TigerVNC
TigerVNC is a high-performance, cross-platform implementation of VNC (Virtual Network Computing). The TigerVNC client/server application allows you to launch and interact with graphical applications on remote machines over the internet or a local network. TigerVNC provides the levels of performance necessary to run 3D and video applications, and it attempts to maintain a common look and feel and re-use components, where possible, across the various platforms that it supports. TigerVNC also provides extensions for advanced authentication methods and TLS encryption.
ReverseSSH
ReverseSSH is a statically-linked ssh server with a reverse connection feature for simple yet powerful remote access. Most people find ReverseSSH useful during HackTheBox, CTF's and similar challenges.
PhotoFlare
PhotoFlare is a powerful, free an open-spource cross-platform image editor. With PhotoFlare you can enjoy a simple, yet powerful image editor that gets straight to the point when it comes to improve and modify images. Some of the features of PhotoFlare include basic image editing capabilities, paint brushes, image filters, colour adjustments and more advanced features such as batch image processing. PhotoFlare is written in C++ and utilize the Qt framework for its interface. The software is openly developed by the community and is released under the GPL-3.0 License.
Zim
Zim is a graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images. Pages are stored in a folder structure, like in an outliner, and can have attachments. Creating a new page is as easy as linking to a nonexistent page.
Audacity
Audacity is an free and open-source, easy-to-use, multi-track audio editor and recorder for Windows, macOS, GNU/Linux and other operating systems. Audacity can record live audio through a microphone or mixer, or digitize recordings from other media. Import, edit, and combine sound files. Export your recordings in many different file formats, including multiple files at once. Audacity supports 16-bit, 24-bit and 32-bit. Sample rates and formats are converted using high-quality resampling and dithering. The easy and intetive workflow of Audacity supports editing with cut, copy, paste, delete and unlimited sequential undo/redo.
UltraVNC
UltraVNC is a powerful, easy to use and free remote desktop access software. The program allows you to use your mouse and keyboard to control the other PC remotely over internet or a network. Allowing you to work on a remote computer, as if you were sitting in front of it, right from your current location.
Windows Sandbox
Windows Sandbox is a virtual machine application that lets you quickly spin up a virtual clean OS imaged from your system's current state so that you can test programs or files in a secure environment that's isolated from your main system.