Most of the essential Windows programs that users rely on every day are free and open source. The strongest options cover desktop customization, screen capture and streaming, note-taking, password management, text editing, ebook management, video and audio editing, and hardware lighting control. This roundup walks through the main choices in the Desktop Apps category of Stackora and explains how to pick among them.
Desktop customization and productivity
PowerToys
PowerToys is a free, MIT-licensed collection of more than 30 Windows utilities. It is aimed at customizing the desktop and streamlining everyday tasks such as window layouts and bulk file renaming. With about 139,000 GitHub stars, it is one of the most widely used tools in this list. It is published by microsoft. If you want to improve how you arrange windows and handle repetitive file work without buying commercial utilities, start here.
Screen capture, recording and streaming
OBS Studio
obs-studio is free, GPL-2.0 licensed software for live streaming and screen recording. It lets you capture, composite, encode and stream video. It is maintained by obsproject. Choose it when you need scene-based recording or live broadcasting.
ShareX
ShareX is a free, GPL-3.0 licensed Windows app for screen capture, screen recording and annotation. It can upload files and screenshots to many destinations. It is published by ShareX. Pick it when your main goal is fast capture and sharing rather than streaming.
Editing video and audio
Shotcut
shotcut is a free, GPL-3.0 licensed video editor for Windows, macOS and Linux. It is built on the MLT multimedia framework and Qt. It is published by mltframework.
HandBrake
HandBrake is an open-source desktop video transcoder for Windows, macOS and Linux. It converts existing videos into MP4, MKV or WebM so they play on phones, TVs and browsers. It is published by HandBrake. Use it for conversion rather than editing.
Audacity
audacity is a free, open-source multi-track audio editor and recorder for Windows, macOS and GNU/Linux, used to record, edit and mix sound. It is published by audacity.
Writing, notes and code
Joplin
joplin is a free, open-source note-taking app for Windows, macOS, Linux, Android and iOS. It stores notes in Markdown and syncs them with end-to-end encryption. It is published by laurent22. It suits users who want portable, encrypted notes across devices.
Notepad++
notepad-plus-plus is a free, open-source source code editor for Windows. It works as a replacement for Notepad and offers syntax highlighting for many programming and natural languages. It is published by notepad-plus-plus. It is the practical choice for developers and anyone editing code or configuration files.
FreeCAD
FreeCAD is a free, LGPL-2.1 licensed multiplatform 3D parametric modeler. It targets product design, mechanical engineering and architecture. It is published by FreeCAD. Choose it when you need to design physical objects.
Security and files
KeePassXC
keepassxc is a cross-platform, open-source desktop password manager. It stores logins, TOTP codes and notes in an encrypted, offline database file. It is published by keepassxreboot. If you prefer local storage over cloud-hosted vaults, this is the tool to consider.
calibre
calibre is a free, GPL-3.0 licensed cross-platform ebook manager. It views, converts, edits and catalogs e-books and syncs them with e-reader devices. It is published by kovidgoyal.
Hardware
OpenRGB
OpenRGB is an open-source desktop app that controls RGB lighting across many brands of hardware from one place. It runs without manufacturer software on Windows, Linux and macOS. It is licensed under GPL-2.0 and published by CalcProgrammer1.
How to choose
Start with the task, not the tool. If you record or stream, compare OBS Studio and ShareX: OBS suits live broadcasts and scene layouts, while ShareX suits quick captures and uploads. For text and code, Notepad++ is the direct Notepad replacement, and Joplin fits note-keeping across devices.
Check licenses against your use. Several entries here are GPL-licensed, which matters if you plan to redistribute modified versions. PowerToys is MIT-licensed, which is more permissive.
For security, decide where your data should live. KeePassXC keeps an offline encrypted file, which suits users who avoid cloud vaults.
For a broader view of tools in this area, browse the Windows apps and Desktop Apps pages, or see all open-source publishers.
Recommendation
For most Windows users, install PowerToys for window management, Notepad++ for editing, KeePassXC for passwords and ShareX for captures. Add OBS Studio if you stream or record, HandBrake if you convert video, and calibre if you manage an ebook library. Each of these is free and does one job well, so you can add them one at a time as your needs grow.