XTools/Blame

The [https://xtools.wmflabs.org/blame Blame tool] lets you find edits made to a page that added the given text. This can be used for example to identify who added vandalism sentence to an article.

From the main [https://xtools.wmflabs.org/blame form], you can run Blame against the latest revision, a specific revision ID, or a date.

This tool is powered by WikiWho.

Summary
Summarizes the requested data.

List of edits
Each edit has a heading with the timestamp. The timestamp is a link to the corresponding 1>Special:MyLanguage/Help:Diff|diff on the wiki. Beneath this is the basic information on who made the edit, the timestamp, and the edit summary, followed by the diff itself.

You can hide/show each result using the [hide]/[show] links in the heading next to the timestamp.