Sorry Mighty resource does not provide a plugin for sh404SEF. Many extensions, though of course not all, do.
However, one thing is for sure: if you cannot have SEF urls with Mighty resource and sh404SEF, you cannot have SEF urls at all, either with Joomla SEF or any other extension.
That's because sh404SEF can directly use plugins for Joomla SEF (router.php files), Acesef and Joomsef.
i use mighty touch on my website (+250000 visitors /month) and integration with mighty touch is really poor so i asked to cometchat team to create an integration (coming soon)
I am not sure what you mean by Poor integration. JBolo supports mighty touch very well & supports chat lists with mighty touch friends.. If you need further integration, we need to know in what way ! We really appreciate feedback & would love to know what you mean by this..