System Informer monitors system resources, debugs software, and detects malware.

github.com/winsiderss/systeminformer
Systeminformer homepage screenshot

About Systeminformer

System Informer is an open-source Windows tool from Winsider Seminars & Solutions for monitoring system resources, debugging software and detecting malware. It is distributed as a portable program, and its source code is published on GitHub under the MIT license.

Pricing is not clearly stated.

Key features

  • Detailed overview of system activity with highlighting
  • Graphs and statistics for tracking resource-heavy or runaway processes
  • Find which processes are using a file
  • See active network connections and close them
  • Real-time information on disk access
  • Detailed stack traces with kernel-mode, WOW64 and .NET support
  • Create, edit and control Windows services
Best for: Users on Windows 10 or higher who need detailed system activity information.
Watch out for
  • Requires Windows 10 or higher.

Systeminformer at a glance

Type
App
Pricing
Not confirmed. Check the site
Platforms
Windows
Details verified
Oct 22, 2026 · Official source
Open source
Yes · Source code
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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