SimilarImages 2013.11
Find near-duplicate images and videos with SimilarImages, a free Windows utility that compares visual content across different sizes, formats and compression levels.
Software for Windows
Desktop tools and games for Windows. Check each listing for its documented version, license and download details.
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Similarity 2.5.1
Find duplicate music and similar images with Similarity for Windows. Compare audio by content or tags, review quality information and edit music tags; advanced tools require Premium.
Simple Data Backup 11.3
Back up Windows files and folders to another drive or network share as direct copies, ZIP files or 7z archives. The Free edition has limits on backup jobs and advanced features.
Simple DNS Plus 9.1 build 117
Host DNS zones or run a local resolver/cache on Windows with Simple DNS Plus, a commercial DNS server with graphical management and a 14-day evaluation.
Simple Sudoku 4.2n
Generate Sudoku puzzles at five difficulty levels, track candidates and request logical hints with Simple Sudoku, a Windows puzzle maker and solver free for private use.
simple-acme 2.4.1.2444
Request and automatically renew ACME certificates for IIS and other server applications with simple-acme, a free, open-source Windows command-line client.
SimpleCodeGenerator 1.17
Generate QR codes from URLs or formatted text, copy them to the clipboard, or export image files with NirSoft's free portable Windows utility.
simplewall 3.8.7
Control which Windows applications can access the network with simplewall, a free, open-source Windows Filtering Platform utility with custom rules and packet logging.
Simutrans 125.0
Build passenger, mail and freight networks in Simutrans, a free, open-source transport simulator. This Windows x64 engine download needs a separate pakset.
SingularityApp 14.6.0
Organize tasks, projects and habits with SingularityApp for Windows. Basic works on one device; paid plans add cross-device sync and calendar planning.
Siril 1.4.5
Calibrate, align and stack astronomical images with Siril, a free, open-source image processor. This entry links to the 64-bit UCRT64 Windows installer.
SIW 16.16.1014
Inspect Windows hardware, installed software and network configuration with SIW, a system-information utility with report exports and a 14-day evaluation trial.
Sketsa SVG Editor 9.1
Draw SVG artwork visually or edit its XML source with Sketsa SVG Editor, a commercial vector editor for Windows that requires Java 11.0.4 or higher.
SkinFiner 5.8
Smooth portrait skin, even skin tone and process batches with SkinFiner for Windows, a standalone editor and Photoshop/Lightroom plugin available as a paid product with a free trial.
SlideDog 2.3.9
Arrange PowerPoint decks, PDFs, videos and web pages into a Windows presentation playlist. SlideDog coordinates existing viewers; its free edition has a watermark and Pro adds presenter and audience tools.
Slitheris Network Discovery 1.2.42
Discover network devices from Windows, inspect operating-system and device-type hints, and export scan results with Slitheris. Free use covers 50 devices; larger networks require a paid license.
SmadAV 2026 Rev. 16.0
Add a second antivirus layer for Windows and USB flash drives with SmadAV. The free edition is for personal use; organizational use and extra controls require Pro.
Smarter Battery 9.2
Monitor laptop battery capacity, wear and charge history with Smarter Battery for Windows. Its demo allows ten sessions of 15 minutes before purchase is required.
SmartSniff 2.30
Capture TCP/IP traffic and inspect client-server conversations in ASCII or hexadecimal with SmartSniff, a freeware Windows network utility.
SMPlayer 26.8.29
Play video and audio with built-in codecs, resume files where you stopped and adjust subtitle timing with SMPlayer. This download is the unsigned 32-bit Windows installer.
Snagit 2026.4.0
Capture scrolling pages, annotate screenshots and turn on-screen steps into visual guides with Snagit for Windows, a paid application with an evaluation trial.
SnakeTail 1.9.8
Follow growing text logs and Windows Event Logs with SnakeTail, a free Windows log viewer with keyword highlighting, tabs and saved sessions.
Snap4Arduino 10.3.6
Build block-based programs that interact with Arduino and other Firmata-compatible boards. This legacy Windows desktop edition is free software; maintenance ended in September 2025.
SnapGene 8.2.3
Plan DNA cloning and PCR, annotate plasmid maps and design primers with SnapGene for Windows. Full editing and simulation require a license; free Viewer mode supports viewing and annotation.