SearchSuite is a userscript that provides user control over search results: it can strip them down to a single-spaced list, sort, and more. Most of its features are presented as menu item toggles to turn each feature on/off. Each menu-item-controlled feature works on the output of all the others, in both their on and off states. Feedback and feature suggestions welcome.
Do you have need for a specialized script that doesn't exist yet, or have an idea for a cool new script or gadget? Post requests and ideas at Wikipedia:User scripts/Requests.
Free subscriptions to high-quality paywalled journals, newspaper archives, and online reference works are available for Wikipedia editors. For more information, see Wikipedia:The Wikipedia Library/Databases
Projects seeking help
Also consider posting WikiProject, Task Force, and Collaboration news at the Signpost's WikiProject Report page.
Wikipedia:Typo Team/moss just got a fresh batch (from the July 20, 2018 database dump) of articles with misspelled words, and words missing from Wiktionary. Stop by and experience the satisfaction of fixing all the misspellings in an article on the topic of your choice!
Search & replace in thousands of articles with AWB
Do you need to correct a spelling error on a large number of pages?
Are there terms you need to linkify across an entire subject?
Do you need to replace a category tag on 500 articles?
AutoWikiBrowser (AWB) can do that and more. It is a free-licensed, semi-automatic editor created and maintained by Wikipedians, available to editors who have made at least 500 responsible edits in the main namespace. AWB includes a powerful list maker (up to 25,000 articles), to help you gather the titles of the articles you wish to process. An extended AWB Listmaker is available as a plug-in. AWB will even do regex (regular expression) find/replace.