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Hi, I'm Laurentiu. I'm a QA Engineer and the solo developer behind SysManager, a local-first toolkit
that pulls dozens of Windows maintenance and diagnostics tools into one portable .NET 10 app. No
installer, no account, and nothing phones home.

I built it out of frustration. Every time I needed to clean up a drive or chase down a flaky
connection, I ended up hunting for yet another closed-source tool, dodging bundled ads, and clicking
through installers I didn't trust. I just wanted one honest place to do all of it. So I made one.

Working in QA, I'd rather you be able to trust the tool than be impressed by the feature count.
Three rules run through it:

  • Zero telemetry. It runs entirely on your machine. The network tools only reach hosts you point
    them at.
  • Scan first. Nothing gets touched before it's measured and shown to you, and any system change
    is confirmed up front and reversible from a snapshot.
  • Open source under MIT, so you can read exactly what it does instead of taking my word for it.

A quick tour of what's actually in there (these are examples, not the full list): a live
multi-target ping chart with gamer and streamer presets, traceroute, HTTP and Ookla speed tests, DNS
switching, a hosts editor, and network repair that flushes DNS and resets Winsock and TCP/IP. When
something's wrong it gives you a plain-English verdict on whether it's your PC, your connection, or
the server on the other end. On the health side there's SMART monitoring, memory diagnostics, and a
0-100 health-score dashboard. It pulls Windows Update through the WUA COM API, which surfaces
optional drivers and firmware that some tools skip. There's a scan-first deep cleanup that leaves
game files and logins alone, a secure 1/3/7-pass file shredder, and a set of 12 reversible privacy
toggles for things like telemetry, the ad ID, and Copilot. Plenty more is half-built.

SysManager is free and open source, and it stays that way. No ads, no paid tier. The money goes to
real costs I can point at. The big one is a code-signing certificate. SysManager isn't signed yet,
so Windows SmartScreen warns people on first launch, and a cert clears that warning for everyone who
downloads it. After that it's CI/CD infrastructure and plain development time to fix bugs and
finish the tools that are still half-built.

If you sponsor, it genuinely helps keep this independent. Even just using it and filing a bug report
is a real contribution. Thank you either way.

Featured work

  1. laurentiu021/SystemManager

    Open-source Windows system toolkit: privacy toggles, DNS changer, file shredder, bulk app installer, network monitor, disk cleanup, process manager, and 55+ features in one portable .exe. .NET 10 /…

    C# 28

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