A year ago I blogged about an article I had read that looked at different tools that could be used to either create screencasts, or allow screen sharing, in support of virtual reference transactions.
Six months ago a representative from ScreenConnect sent me an email suggesting that tool would be a good addition to the list from that post. I finally got around to taking a look (can you say "swamped"), and have to agree. A full cross-platform remote-control product, ScreenConnect is a self-hosted solution, which may be a turn off for some libraries, as so many services appear to be cloud-hosted, but I guess that's how they keep the price down.
Lots of good documentation on the site, including this page describing how ScreenConnect fits in amongst its competitors. I also like the "Charlie Brown Teacher" component of their screencast. I must admit I didn't actually use the product, but you can download a fully-functioning 30-day free trial if it looks like something you want to explore. Oh, and there's an app for that too.