List Compare
Paste two lists and see what exists only on one side, what matches and which values are duplicated.
COMPARE
Compare two lists
Use one value per line. Good for users, groups, devices, mailboxes or migration checks.
Only in A0 values
Case-insensitive matching keeps the first spelling found. Duplicate counts show repeated values within each source list.
More about List Compare
When this helps
Compare membership exports, mailbox lists, device inventories, migration source and target lists, or any other one-value-per-line dataset. Review the differences before using them as the basis for an administrative change.
How matching works
By default Opselith trims surrounding spaces, ignores letter case, skips blank lines and sorts the result. Open Comparison options if your data needs different matching rules.