SiteBar looks useful. And it has a firefox extension…
But their server software needs MySQL. I like PostgreSQL. Bah. That sounds like work. Thankfully, their database abstraction looks reasonably clean. Oh well, here we go.
Update: no, the mysqlisms are too deeply embedded. Or at least, I don’t know how to sensibly deal with assumptions about mysql_insert_id that aren’t true in a PostgreSQL world.