Syser claimed to be that replacement. But in fact it&#x27;s too old, unstable and nobody using it. Now everyone is using WinDbg for kernel&#x2F;drivers debugging. It has terrible command syntax, but with PyKD extension and some customisation it&#x27;s usable. See those slides[1] on how to do that. Also, there is another way to work with WinDbg protocol - using radare2[2]. Beware this support is in early development and may be unstable. But, unlike original WinDbg, it is cross-platform tool without external dependencies and completely free and open source.<p>[1] <a href="https:&#x2F;&#x2F;www.botconf.eu&#x2F;wp-content&#x2F;uploads&#x2F;2014&#x2F;12&#x2F;2014-2.1-Workshop-Feedback-on-Windbg-Usage.pdf" rel="nofollow">https:&#x2F;&#x2F;www.botconf.eu&#x2F;wp-content&#x2F;uploads&#x2F;2014&#x2F;12&#x2F;2014-2.1-W...</a><p>[2] <a href="https:&#x2F;&#x2F;github.com&#x2F;radare&#x2F;radare2&#x2F;blob&#x2F;master&#x2F;doc&#x2F;windbg" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;radare&#x2F;radare2&#x2F;blob&#x2F;master&#x2F;doc&#x2F;windbg</a>