while bridging with many different products is on the long term todo list, its a big undertaking to integrate different user systems and keep them updated. At this time, this would need to be a custom (paid) job, of course if you know some PHP you can do this yourself
It really depends on the level of integration you are looking for, there is LOT that can be done with RSS feeds to syndicate content back and forth between any CMS and VisioList.