QTTabBar is extension for Windows Explorer that brings tabbed browsing to Microsoft's file browser, along with a host of other great features.
Qualys
Qualys, Inc. helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
QuickHash-GUI
QuickHash-GUI is an open-source graphical interface data hashing tool for Linux, Windows, and Apple Mac OSX. Originally designed for Linux, but also available for Windows and Apple Mac OSX.
QuickLook
QuickLook enables a very quick preview of file contents by pressing the Spacebar.
R Project
R is a free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS. To download R, please choose your preferred CRAN mirror.
Rachota
Straightforward time tracking.
RainbowCrack
Crack Hashes with Rainbow Tables.
Rainmeter
Rainmeter allows you to display customizable skins on your desktop, from hardware usage meters to fully functional audio visualizers. You are only limited by your imagination and creativity.
RAMMap
RAMMap is an advanced physical memory usage analysis utility for Windows Vista and higher. It presents usage information in different ways on its several different tabs: Use Counts: usage summary by type and paging list. Processes: process working set sizes.
Rapid7
Accelerate cloud transformation with practitioner-first cybersecurity solutions. Level up SecOps capabilities with MDR, XDR, SIEM, threat intel, and VM.
RAR Password Unlocker
RAR Password Unlocker is professional RAR/WinRAR password recovery software, which can crack RAR/WinRAR password and extract the encrypted RAR files within seconds.