Product Key Finder 2.2.3 (publisher listing)
Recover stored software license keys from the Windows registry with Dave Hope's free Product Key Finder, with CSV export and unresolved modern Windows compatibility.
Utilities for Windows
Compare published utilities listings for Windows. Check each application's documented requirements, features and limitations before following its download link.
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ProduKey 1.97
View stored product IDs and license keys for supported Windows, Office and server products with ProduKey, a free portable utility from NirSoft.
ProfiCAD 14
Draw electrical schematics and wiring diagrams with ProfiCAD for Windows. Use the free Home edition for hobby projects or a paid license for commercial drawing and reporting tools.
Project Timer 4.3.0.0
Track project hours from the Windows notification area, assign hourly rates and turn recorded work into reports and invoices with Project Timer's free desktop client.
ProjectLibre 1.9.8
Plan individual projects on Windows with ProjectLibre Desktop, a free, open-source scheduler with Gantt charts, resource and cost tracking, and Microsoft Project file compatibility.
ProScan 24.15
Program supported Uniden radio scanners, record audio and control a scanner remotely with ProScan for Windows. The full application has a 30-day trial before paid activation.
PrtScr 1.8
Capture a window, the full screen or a freehand selection with PrtScr, a free Windows screenshot utility with annotations and JPG, BMP and PNG export.
Psiphon
Reach blocked websites with Psiphon, a free Windows circumvention client that connects through the Psiphon network using proxy and tunnelling methods.
pstoedit 4.3
Convert PostScript drawings into editable vector formats with pstoedit for Windows, using a graphical interface or command-line tools and a separate Ghostscript installation.
PsTools
Inspect processes, control services and run remote commands with PsTools, Microsoft Sysinternals’ free command-line administration suite for Windows.
Publish or Perish 8.19.5300
Retrieve academic citations and calculate research-impact metrics with Publish or Perish for Windows. Compare paper counts, citation totals and the h-index, then export results for further analysis.
Puran Defrag 7.7.2
Defragment Windows hard drives with Puran Defrag, a free utility with scheduled maintenance, boot-time processing and file exclusions.
Puran Utilities 3.2.1
Clean unwanted files, manage startup items and run selected maintenance tools from one Windows utility suite. Puran Utilities also includes disk checking and file recovery tools.
PureSync 8.6.1
Compare folders, synchronize files and schedule backups on Windows with PureSync. Personal is free for private use; business use requires Professional.
PuTTY 0.85
Open SSH, Telnet and serial terminal sessions with PuTTY, a free Windows client with saved connection settings and session logging.
PVsyst 8.1.8
Design photovoltaic systems, model shading and compare energy-yield simulations with PVsyst for Windows. A one-month trial is available before paid licensing.
pyfa 2.69.3
Plan EVE Online ship fittings outside the game with pyfa, a free, open-source fitting assistant for Windows. Experiment with modules and save fits before committing to a setup.
PyMOL 3.1.9
Explore 3D molecular structures, render scientific figures and build animations with PyMOL for Windows. The publisher's packaged edition requires a license.
Q-Dir 12.82
Manage several folders in one window with Q-Dir, a free Windows file manager with up to four panes, tabs and saved folder combinations.
Qalculate! 5.13.2
Calculate with units, convert currencies and work with symbolic expressions in Qalculate!, a free desktop calculator for Windows.
qBittorrent 5.3.0
Manage torrents and magnet links with qBittorrent, an open-source Windows BitTorrent client with file priorities, RSS filters and scheduled bandwidth limits.
QElectroTech 0.100.0
Draw electrical schematics with QElectroTech, a free, open-source diagram editor with a searchable symbol library and custom element tools. This download is the Windows x64 installer.
QGIS 4.2.3
Create maps, edit geographic layers and analyze spatial data with QGIS, a free, open-source desktop GIS. This entry links to the publisher's Windows standalone MSI installer.
qikQR 1.0.0
Create QR codes from text with qikQR, a free, open-source Windows desktop app with image export and appearance settings. Generation uses an online service; the project is archived.