Research
We page both lists and compare them, so you get the difference rather than a sample.
This tool is not live yet
It is built, but the upstream behind it is not connected, so it would return an error rather than an answer. We would rather say so than let you sign up for it. The tools that do work are marked on the index.
What it does
Both lists paged in full
not the first page only
The full difference
who you follow that does not follow back
Public accounts only
we never ask you to log in
Behind the tool
Every tool here is a thin interface over the same public API you can call yourself. If you want the output in your own software rather than a form, the quickstart gets you a working request in about a minute, and pricing is per call — one-time packs, with optional auto-recharge.
More research tools
150 free credits and a ready-made key the moment you sign up. No card.