btw, there was also a Syser debugger, developed as a replacement for SoftICE, I never used it, except playing with it a little, few years ago, it was nice experience.

Although I heard they stopped the development, a little google -ing found a page with fresh release and win10 support claim, but I have no idea, how the legitimate is it https://qpdownload.com/syser-debugger/

also there is rewriting project on github, with last commit from 5th June, 2019 https://github.com/marakew/syser

Would appreciate to hear any info about current status of Syser

UPDATE: Just FYI, after lurking a bit over the github repo and associated links, found that gihub repo maintainer seems to be a pretty qualified reverse engineer, for example, he made his own independent skype protocol reconstruction (https://marakew.github.io) and the README.md in gihub repo say, that Syser sources were lost due to the corrupt flash drive, so I guess he was one of the (author?) developers of Syser.

Still would be happy to hear more, if somebody know the full story.