Windows apps and utilities: 153 open-source projects (2026)

A collection of over 30 Windows utilities for customizing the desktop and speeding up everyday tasks, from window layouts to keyboard remapping.

The modern Windows Terminal app with tabs and Unicode support, plus the source for the classic Windows console host (conhost.exe).

Open-source tool that turns a USB drive into a multiboot stick: copy ISO, WIM, IMG, VHD(x) and EFI files and pick them from a boot menu.

A highly configurable terminal emulator with built-in SSH, Telnet and serial clients for Windows, macOS and Linux.

A PowerShell utility that bundles common Windows setup tasks: installing programs, applying tweaks, fixing issues, and configuring Windows updates.

A PowerShell script that removes preinstalled Windows apps and disables telemetry, ads and other clutter on Windows 10 and 11.

A modern, open-source file manager for Windows with multitasking, file tags, and deep system integration.

Free, open-source Windows screenshot and screen recording tool with annotation, OCR, and automated uploads to custom destinations.

A Windows utility for formatting USB drives and creating bootable USB media from ISO and disk images.

A desktop Swiss Army knife for developers, bundling about 30 small tools for encoding, formatting, converting, testing and generating data.

The open-source source code of the Windows Calculator app, a C# and C++ UWP app that ships with Windows 11.

A free source code editor and Notepad replacement for Windows with syntax highlighting for many programming languages.

Windows app to record a screen area, webcam or sketchboard, then edit and export it as GIF, APNG, video, PSD or PNG.

A Windows-first graphical interface that manages software installs and updates across WinGet, Scoop, Chocolatey, Homebrew, APT, pip, npm and more.

A Windows port of macOS Quick Look that previews files instantly in File Explorer when you press Space.

A free Windows program uninstaller that removes many applications at once, cleans leftovers, and runs uninstallers from preset lists.

A lightweight Windows 10/11 utility that makes the taskbar translucent or transparent, with blur, acrylic and color options.

A cross-platform app store that lets you discover and install apps released on GitHub, Codeberg and other Forgejo or Gitea forges.

Free, open-source Windows app for setting animated wallpapers, web pages, games and screensavers on the desktop, built with WinUI 3.

A fully customizable desktop environment for Windows 10/11 that replaces the taskbar, dock, launcher, and window manager with themeable components.

A lightweight Windows reader for PDF, EPUB, MOBI, CBZ, CBR, FB2, CHM, XPS and DjVu files.

A free Windows tool for monitoring system resources, inspecting processes, debugging software and spotting malware, a successor to Process Hacker.

A Windows file archiver forked from 7-Zip, redesigned for the modern Windows 10/11 experience with a XAML GUI and dark mode.

A quick file search and app launcher for Windows with a plugin system for web searches, bookmarks, and system commands.

Lightweight Windows control tool for Asus laptops that replaces most of Armoury Crate's performance modes, GPU modes, fan curves and lighting features.

A Windows context-menu tool that converts and compresses files, including images, video, audio and PDFs, directly from Explorer.

A tiling window manager for Windows that arranges application windows, virtual workspaces and monitors, controlled through a CLI.

Windows taskbar integration that puts Everything's instant file search into a taskbar search box, icon, or deskband.

A Windows 10/11 utility for debloating, optimizing and customizing the system, app removal, and creating autounattend.xml files.

Open source video game library manager and launcher that unifies games from Steam, Epic, GOG, EA App, Battle.net and emulators in one interface.