Nice idea from Jane Hart, your top 10 tools (will be reading through that list with interest).
Here are mine, in no particular order :)
On the laptop…
Firefox – Well, duh, what’d browsing the web be without it.
EditPlus 2 – Best . Text . Editor . Ever .
Filezilla – A tad annoying but overall great FTP app I use all the time.
Skype – Doesn’t need much explanation.
uTorrent – Nicest bittorrent client around
On the net…
Edublogs – But of course :)
Gmail – Ridiculously useful
WHM / cPanel – Helps me do everything I do everyday
Pingdom – Brilliant site performance monitoring tool
Google Reader – Great aggregation app.