Wikipedia Diurnal Cycle is a tool to analyze the average daily activity of Wikipedia contributors and compare them. It uses UTC time; average run for the tool should be less than ten seconds.
WikiProject Estonia Articles is an utility to find untagged articles related to WikiProject Estonia. This tool runs for several minutes; generally using this is more often than once in a couple of weeks is not needed.
User Edit Stretches is an utility to find long periods of continuous editing. Depending on the requested edit count, tool works from a few seconds to several minutes. Up to 30 longest edit stretches will be displayed.
User Edit Search is a tool to to find user edits for a specified article.
Similar Interest Search is a utility to to find Wikipedia pages edited by both specified users.