I am still fighting against Joomla! 1.5 API but I've made good progress!
in the queue, I am developing
At the same time! Akobookplus/Akocomment is really easy to migrate, Opencomment because of Ajax is more difficult (in order to have access to Joomla API in the Ajax request). SecurityImages is working but I've break the backward compatibilities, I am now trying to solve that issue.
I am on it, and has work 25 hours in 5 days, tonight I hope to release Akobookplus tonight