Local browser tool A / B
Compare two lists and see what's missing.
Paste two lists, one item a line, to see what is only in list A, only in list B, and in both. Everything runs in this browser tab.
List AFor example, everyone you invited
List BFor example, everyone who replied
The differences will appear here.
Paste or open two lists, or load the example. They stay in this browser tab and are not sent anywhere.
How it works
Two lists in,
three lists out.
Each line is one item. Turn on the comma option for lists like “apples, pears, plums”, or for a column pasted from a spreadsheet with tabs.
By default “Anna@example.com” and “anna@example.com ” are the same item. Turn the case and space options off to compare items exactly as written.
With “Count repeated items”, an item written three times in list A and once in list B is left over twice in list A. Without it, each item counts once.