If you would like to nominate a MediaWiki compatible extension for inclusion in our Environment Survey, please feel free to add it below. We also welcome you to explore existing nominations and provide feedback by giving ratings or through the discussion page.
Text editor with syntax highlighting, instant diff/preview, find/replace, and MS Word conversion. Widely used, including as gadget on many Wikipedias. Stable and under active development. Translated/localized for many languages. Avoids less user friendly aspects of WYSIWYG. (more).
Allows users to add and edit data using forms. It creates dynamic forms based on Form description pages and semantic properties (provided by Semantic MediaWiki) and as a result simply fills out templates with all collected parameters. This is just perfect for infoboxes and such. Features include field auto-completion, standard input types, map interface for coordinate picking, inline file uploads and more.
While not providing true WYSIWYG (editing is done directly to wikitext), Wikizzle includes AJAX WYSIWYM editing features similar in purpose to WYSIWYG such as real-time rendering of the article. Runs in Mozilla.
This extension adds the option to typeset music directly in the wiki code, using the sintax <lilypond>...</lilypond>. This would be a better way of deal with articles about music than uploading images. Additionally, using <lilymidi>...</lilymidi> it is possible to click on the image to download the midi file. See also: bugzilla:189 and lilypond-devel list
Add Media Wizard <ratings:scale category="Extension Survey/Extension Nomination/Other" title="Add Media Wizard" />
Tool for adding media to pages or sequences. Includes abstracted remote media import; (currently commons, archive.org, and metavid supported); includes image edit tools. Works with images & video. Staged deployment possible as user Gadget. Uses script loader for localization and performance. Blog post review here
Facilitates the navigation of content, making it very easy to go back and also have an idea of the recent pages you've visited. (It really looks better situated at the top of the page, with white background colour).
Allows for the transclusion of labeled sections (anchors). Not intended for use on mainspace. One potential use is to monitor active threads on noticeboards from the user space. Another use is to group similar templates using sections of only one template.
Adds the ability to save a draft of an article on the server while editing. Users must be logged in to save drafts, as they are tied to their user account. Drafts are always discarded when they are used to save the article they came from.