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.
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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.
Sioyek 2.0.0
Read technical books and research papers with Sioyek for Mac, an open-source PDF viewer with reference previews, searchable highlights and keyboard navigation.
Siril 1.4.5
Calibrate, align and stack astronomical images with Siril for Mac, a free, open-source processor for deep-sky photography and image analysis.
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.
Sketch 2026.3.1
Design app interfaces, reusable components and interactive prototypes with Sketch for Mac. Work locally or use a subscription Workspace for collaboration.
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.
Skim 1.7.17
Read and annotate PDFs on your Mac with Skim, a free PDF reader and note-taker with highlights, reference snapshots and tools for scientific papers.
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.
SMARTReporter 3.2.0
Monitor supported Mac drives for S.M.A.R.T. warnings and I/O errors with SMARTReporter, a free disk-monitoring utility with email and on-screen alerts.
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.
SMPlayer 26.8.29
Play video and audio files, resume playback and adjust subtitle timing with SMPlayer, a free, open-source media player for macOS.
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.
Snagit 2026.4.3
Capture scrolling pages, annotate screenshots and record screen walkthroughs with Snagit for Mac, TechSmith’s paid capture tool with a 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.
Snappy Driver Installer 1.26.1 (R2601), SDI Lite
Find missing drivers and update existing ones with a free, portable Windows utility. This download is SDI Lite, which needs index downloads before scanning hardware.