OpenEXR Viewer 0.6.1
Inspect OpenEXR image layers and detailed file metadata with a free, open-source viewer. This download is the Windows 64-bit installer.
Utilities for Windows
Compare published utilities listings for Windows. Check each application's documented requirements, features and limitations before following its download link.
Browse by platform and category
View details
OpenHashTab 3.1.1
Calculate and compare file checksums from Windows file properties with OpenHashTab, a free, open-source shell extension with checksum-file checking and export tools.
OpenRocket 24.12
Design model rockets and compare simulated flights with OpenRocket, a free, open-source tool with component libraries, stability analysis and flight plots.
opentrack 2026.1.0
Track head movements and send them to compatible games and flight simulators with opentrack for Windows, using webcam, marker or other supported tracking inputs.
OpenVPN 2.7.8 (I002 Windows installer)
Connect a Windows PC to a configured VPN with OpenVPN Community Edition, including the OpenVPN GUI tray client and a system service.
OpenWebStart 1.14.0
Run JNLP-based Java applications on Windows with OpenWebStart, a free, open-source Java Web Start replacement with JVM management and graphical settings.
OpenWithView 1.11
Hide unused applications from the Windows Open With dialog and restore them when needed with NirSoft's portable freeware utility.
Opera Air 137.0.6036.91
Browse the web with a minimalist interface, built-in soundscapes and guided breaks in Opera Air, a free browser for Windows.
Opera Browser
Browse the web with built-in ad blocking, sidebar messengers and tab organization in Opera, a free browser for Windows.
Oracle VirtualBox 7.2.22
Run guest operating systems in virtual machines on your Windows PC with Oracle VirtualBox. Use snapshots to revisit configurations and manage VMs through a graphical interface or command line.
OSFMount 3.3.1000
Mount disk images as Windows drives or create temporary RAM disks with OSFMount, a free 64-bit utility from PassMark Software.
OSForensics 11.1 build 1017
Search files and emails, examine recent Windows activity and organize digital evidence with PassMark OSForensics. A limited Free edition and paid editions are available.
Outlook CalDav Synchronizer 4.7.1
Sync Outlook calendars, tasks and contacts with CalDAV and CardDAV servers using this free, open-source Windows Outlook add-in.
OutlookAttachView 3.55
Find attachments across Outlook messages and save selected files to a folder with OutlookAttachView, a free Windows utility for Microsoft Outlook.
OverKeys 0.3.5
Keep an alternative keyboard layout visible while you type on Windows. OverKeys provides a customizable overlay for Colemak, Dvorak, Canary and other layouts.
OVITO Basic 3.17.1
Inspect particle simulations and molecular structures in 3D with OVITO Basic, a free Windows application for visualization and pipeline-based data analysis.
PaperCut Mobility Print
Share Windows-hosted printers with personal devices using PaperCut Mobility Print, a free BYOD printing server for IT administrators. Cloud Print adds remote printing for Windows, Mac and Chromebook users.
PartitionAssistant Recovery
Scan Windows drives for deleted or lost documents, photos and other files with PartitionAssistant Recovery. The Free edition recovers up to 100 MB.
Patch My PC Home Updater
Install and update supported Windows apps from one library with Patch My PC Home Updater, free for non-commercial home use, with scheduling and bulk uninstall tools.
Pauker 1.8
Learn vocabulary, capitals and dates with Pauker, a free Java flashcard program with timed memory stages and learning statistics.
PCmover Professional
Move selected applications, files, settings and user profiles to a new Windows PC with Laplink's paid migration software.
PCSX2 2.8.2
Play PlayStation 2 games on Windows with PCSX2, a free, open-source emulator offering upscaling, save states and virtual memory cards. A BIOS dumped from your own PS2 is required.
PDF Accessibility Checker 26.1.0.0
Check PDF/UA and WCAG accessibility requirements on Windows with free PAC, then inspect document structure in its screen reader preview. Human review is still required.
PDF Anti-Copy 2.6
Reprocess selected PDF pages to restrict text copying and conversion with PDF Anti-Copy for Windows. A paid Pro upgrade adds watermark-free output and commercial use.