Hey all, the results are in!
about:debug (4)
about:devtools (3)
about:debugging (1)
about:inception (1)
about:inspect (1)
about:runtimes (1)
about:targets (1)
about:personadream (-998)
Thank you all for the great feedback and the interesting suggestions! I
really liked "about:devtools" because the page is like a home for many
devtools things, and "about:targets" which makes a lot of sense (if you're
a devtools contributor at least).
In the end I decided to go with "about:debug", for a combination of reasons
(and yes, my poll was biased towards it). Most of the buttons in the page
will read "Debug", because fundamentally its goal to let you debug things,
including remote devices and browser internals (browser toolbox and chrome
frames). Additionally, "about:debug" is a sweet, short and sensible name
that's still available, so I jumped. Maybe "about:devtools" could be a
shorthand for the toolbox itself?
Cheers,
Jan