There was a download of Shavlik NetChk 8.0.3756.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The Shavlik NetChk installer is commonly called ST.Protect.exe, stScanBrowser.exe or WinAppStart.exe etc. Shavlik NetChk is categorized as Office Tools. This free tool was originally created by Shavlik Technologies. We recommend checking the downloaded files with any free antivirus. The most popular versions of the tool 8.0, 7.8 and 7.5.
From the developer:
Shavlik NetChk Limited is a free security program from Shavlik Technologies that analyzes the patch status of those Microsoft products not supported by current Microsoft patch technologies. The scan output from NetChk Limited are MBSA-readable XML files that can be viewed via the MBSA GUI.
You may want to check out more software, such as Shavlik NetChk Protect, which might be similar to Shavlik NetChk.