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https://meta.wikimedia.org/wiki/Research_and_Decision_Science/Data_glossary/Retention_Rate

A tool to generate a Diff report comparing a sample of tiles between to tile servers (Kartotherian standard)

Official Lingua Libre website with general introduction, credits, and the recording app.

A word counter for MediaWiki wikitext

A 404 Not Found (and other error page) handler for Toolforge