A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware.
Cost / License
- Free
- Open Source
Application typeApplication types
Platforms
- Windows
- PortableApps.com



A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware.



An open-source Windows scripting language enabling task automation through hotkeys, macros, and keystrokes, useful for creating custom forms and automating data entry.




Have you ever wanted to copy some text from a dialog box which doesn’t provide such functionality?


The Quick Look feature from Mac OS X, which allows users to preview file contents quickly by pressing the Space key, is missed. Windows doesn't have this feature. While alternatives like WinQuickLook and Seer exist, the decision was made to create a new version because the...











Light enough to use as my go-to (non-IDE) editor, has python extensions. What more can you ask for?
QTTabBar is an extension for Windows Explorer that brings tabbed browsing to Microsoft's file browser. It comes with a number of nifty features including a favorites function for launching folders and applications, groupings of folders that can be opened together, tooltip...



Open-source browser with Gecko engine, supporting HTML add-ons and providing privacy features like Enhanced Tracking Protection and third-party cookie blocking.




Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).




Logitech SetPoint™ software lets you customize your mouse buttons, keyboard F-keys, and hot keys.
The indicator popup/overlay for CapsLock changing is invaluable and is a feature missing in the apps claiming to replace this one. Being able to disable the Insert key is a bonus.
Bash is the shell, or command language interpreter, that will appear in the GNU operating system. Bash is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and C shell (csh). It is intended to conform to the IEEE POSIX P1003.2/ISO 9945.

USBTreeView is a Windows graphical user interface application that enables you to browse all USB controllers and connected USB devices on your computer.



Background application that adjusts screen gamma, making the colors appear warmer at night, reducing strain on your eyes.


Replacement for f.lux, with configurable day and night temperature and brightness.
The prime purpose of the KatMouse utility is to enhance the functionality of mice with a scroll wheel, offering universal scrolling: moving the mouse wheel will scroll the window directly beneath the mouse cursor (not the one with the keyboard focus, which is default on Windows...



Sends scroll events to the window currently under the cursor regardless of the currently selected window, just like MacOS. Does not suffer from WizMouse's bug of closing a reply in MS Outlook when the DEL key is pressed.
git-cola is a powerful GUI for git, a distributed revision control system. cola's ingredients include git-python and jsonpickle. cola is released under the GNU GPL v2.


Many other git clients want you to log-in, use lots of RAM, or other annoyances this clean and lightweight app avoids.
Time-Sync is a freeware software to synchronize the time of your system. The features of the software are:


Free Clipboard Viewer is a free, full-featured and portable clipboard viewer for Windows.

Allows you to view the 3 different clipboards of Windows, including the HTML one!
dnGrep allows you to search across files with easy-to-read results. Search through text files, Word documents, PDFs, and archives using text, regular expression, XPath, and phonetic queries. dnGrep includes search-and-replace, whole-file preview, right-click search in File...




Dual Monitor Tools is a software package for Windows users with dual or multiple monitor setups.
All the tools are open source and free, and each tool is independent so you only need to install or run what you want.



Hex Editor. Support editing or comparing (diff) very large files up to 2^64 bytes. Cross-platform Linux, Mac OS, Windows.




Fills the void of Mac's Hex Fiend
Free and open-source tool for batch uninstalling multiple apps with minimal input, removing portable, protected, and damaged software, and cleaning up leftovers.


Great for being able to clean up the registry mess left by a program
Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. Most of the tools are available as open source.

This thing can open PDFs that would crash the likes of Acrobat like a champ!
Winpatrol provides a multitude of functions including startup control. It is a useful addition to any armoury to maintain computer as best as possible. Oh and a cute scotty icon for your toolbar!



Good for finding and removing bloatware
A versatile client for SFTP, FTP, and other protocols for file transfer. It offers GUI choice, and supports automation and key authentication.




Manages clipboard history, supports text, images, and syncs across computers. Offers encryption, search, thumbnails, and full Unicode with multilingual support.


Properly stores RTF unlike CopyQ
Excellent powerful tool to edit PDF, annotate PDF, redact, protect and more.
PRO Version includes: Remove default watermark Combine PDF files Lifetime license - Windows Commercial use Priority Support.




“Types” is a free and lightweight utility for Windows that allows you to edit program associations, icons, context menus and other properties of various file types displayed in Explorer.


FileTypesMan is an alternative to the File Types tab in the Folder Options of Windows. It displays the list of all file extensions and types registered on your computer.

Web browser built on an open-source platform featuring multiple account support, integrated password manager, dark mode, real-time translation, and seamless cross-device syncing.




Sometimes you just have to view it in Chrome because web developers don't design with any other browser in mind.


WindowGrid is a modern window management program that allows the user to quickly and easily layout their windows on a dynamic grid.



Keyboard Notifier sits in the system tray and notifies the user as to the state of the Caps, Scroll and Num lock keys. Designed for systems with ill-placed or non-existent hardware notification lights.

Zeal is a free and open-source offline documentation browser for developers. You download docsets for the languages, frameworks, and libraries you use, and Zeal lets you search across all of them at once and jump straight to the symbol, class, or function you need.



Lightweight Simple Image Viewer with Slide show feature, Resize and Lossless-cut, Color correction, Rename, Multi-language and more...


Free open-source code editor and Notepad replacement supporting multiple languages, featuring high speed, low resource usage, privacy focus, and plugin extensibility.




Captures customizable screen areas, enables instant online upload, sharing via short URLs, quick edits, local saves, and seamless browser add-ons.




Cygwin is a Unix-like environment and command-line interface for Microsoft Windows. Cygwin provides native integration of Windows-based applications, data, and other system resources with applications, software tools, and data of the Unix-like environment.

Disk analysis tool with treemap views, duplicate file detection, and cleanup actions. Works offline and ad-free on Windows as an open-source project.








Efficient file archiver offering superior compression and encryption. Supports multiple formats such as TAR, ZIP, with a unique self-extracting feature.



PeaZip is free file archiver utility, based on Open Source technologies of 7-Zip, p7zip, FreeArc, PAQ, and PEA projects, for Linux, macOS and Windows.




DB Browser for SQLite (DB4S) is a high quality, visual, open source tool to create, design, and edit database files compatible with SQLite.



doPDF allows you to freely convert documents to PDF files. It installs as a printer driver, enabling you to print from any Windows application.




Adds that "Print to PDF" ability that even handles files big enough to crash MS Word's PDF exporter!
Haroopad is a markdown enabled document processor for creating web-friendly documents. You can author various formats of documents such as blog article, slide, presentation, report, and e-mail as if experts did.








A lightning fast and flexible keystroke launcher for Windows. No installation required (portable). Extensible with Python3 plugins.




Good Spotlight-esque tool. Utilizes python, so it may be as extensible as Flashlight (the Spotlight mod platform).
Comments
Hi. Interesting list. What is this about? Is it for filling the holes inside Windows? Or about switching to Linux and still having the features that used to be in Windows? Or about saving Windows?
I believe Rabbit5's list is trying to fix windows by adding new apps that they feel were missing from windows.