Nullsoft Scriptable Install System (NSIS) 3.13
Create Windows installers with NSIS, a free, open-source tool that uses scripts to control file installation, uninstallers and custom setup pages.
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Numara 7.6.3
Write calculations alongside notes with Numara, a free notepad calculator for Windows with live results, unit conversions and function plotting.
NUSGet 1.5.3
Download Wii, vWii and DSi content from Nintendo Update Servers, with WAD/TAD packing and decryption for free titles that have a server-provided ticket.
NVCleanstall 1.19.0
Choose which NVIDIA GeForce driver components to install with NVCleanstall, a free Windows utility that can also prepare a reusable custom installer.
NVDA 2026.3
Read Windows applications through speech or a refreshable braille display with NVDA, a free, open-source screen reader from NV Access.
NVIDIA Profile Inspector 3.0.2.1
Edit NVIDIA driver profiles for individual Windows games and applications, back up .nip presets and access settings beyond the standard control panel.
NXPowerLite Desktop 11.0.1
Reduce PDF, Microsoft Office and image file sizes offline with NXPowerLite Desktop for Windows, preserving their formats and optimizing Outlook attachments.
Nyrna 2.27.2
Suspend and resume Windows games and demanding applications with Nyrna, a free, open-source utility with hotkeys, a graphical interface and command-line controls.
O&O DiskImage 23.1.26049
Back up a Windows PC, recover individual files or clone a drive with O&O DiskImage Premium, a paid backup application with a 30-day trial.
O&O Lanytix
Discover devices on your local network with O&O Lanytix, a free portable Windows tool that lists IP and MAC addresses, response times and device history.
O&O RegEditor 16.1.6660
Edit Windows registry keys and values, search with regular expressions, and save frequently used paths with O&O RegEditor, a free portable registry editor.
O&O ShutUp10 3.6.1135
Review Windows 10 and 11 privacy options in one place with O&O ShutUp10, a free portable utility with recommendations for individual settings.
OBS Studio 33.0.0
Record demonstrations or produce live streams in OBS Studio by combining screen capture, webcams and audio into scenes you can switch and preview.
OBS Studio 33.0.0
Record your Mac screen and stream live with OBS Studio, a free, open-source app for combining video sources, scenes and audio. This download is for Apple Silicon Macs.
obs-asio 3.2.1f
Capture ASIO audio-interface inputs in OBS Studio with obs-asio, a free Windows plugin with device selection and channel routing.
Obsidian 1.14.5
Write local notes, link related ideas and explore their connections in Obsidian for Mac. The app is free to use; Sync and Publish are optional paid services.
oCam 550.0
Record a screen region, gameplay or audio with oCam for Windows. Save video or animated GIFs, capture still images, and choose system sound or microphone input.
OCCT 17.1.10
Stress-test CPU, memory and graphics hardware with OCCT for Windows. The Personal edition combines stability tests, sensor monitoring and benchmarks, with limits on free use.
ocenaudio 3.22.1
Edit and analyze audio with ocenaudio, a free Windows audio editor with real-time effect previews, multi-selection and a spectrogram view.
ocenaudio 3.22.1
Edit and analyze audio on Mac with ocenaudio, a free audio editor with waveform and spectrogram views, real-time effect previews and VST plugin support.
Odin dev-2026-10
Compile systems, graphics and application code with Odin, a data-oriented programming language. The Windows x64 compiler requires MSVC and the Windows SDK.
OggSync 10.1.0
Synchronize Outlook with Google Calendar on Windows. OggSync offers manual single-calendar sync for free, with multiple calendars and scheduled sync in Pro.
Okular master build 8194 (nightly)
Read PDFs, annotate documents and browse ebooks or comics with KDE's free document viewer. This direct Windows download is an untested nightly build, not the recommended Microsoft Store release.
Ollama 0.40.12
Run open AI models on your Windows PC, chat from the terminal and connect applications through a local API with Ollama.