Markup
Extended options for media manager
Allows extended options for inserting images from the media manager [Serendipity >= 0.9]
Free Wiki links for your entries
You can specify new/existing links to your blog entries via [[title]], link to staticpages via ((title)) and link to both via {{title}}. References can be automatically appended to the blog entry.
Markup: GeSHi
Computer Language Color Syntax Highlighting. Tag usage: [geshi lang=lang_name [,ln={y|n}]]code snippet[/geshi]
Markup: Include entry data/templates/blocks
Allows you to add HTML-style tags to your entry that includes parts of other entrys. Use this markup: [s9y-include-entry:XXX:YYY]. Replace XXX with the target entryid and YYY with the target field name (i.e. "body", "title", "extended", ...). You can also use the new menu functions to maintain templates and blocks that can get inserted in between your entries.
Markup: Mobile Output
This plugin handles mobile devices and outputs optimized XHTML MP markup if it detects a mobile browser and a specially optimized site for iPhone and iPod Touch. It also scales images to fit the display size.
Markup: RegexpMarkup
Mark up via user custom regexp files. See example files in "regexps" subdirectory of this plugin.
Markup: Smarty Parsing
Parses Smarty instructions inside the article text. This is not usable in combination with syntax code-highlighters or multilingual tags in entry context fields!
Markup: Syntax Highlighter
This plugin is a JavaScript code highlighter based on the code of the same name by Alex Gorbatchev. This plugin takes less server-side resources than GeSHi and displays less markup in the actual HTML code. It's a lighter, cleaner alternative. This plugin requires the supporting theme to provide the following hooks: frontend_header, frontend_footer (and optionally backend_preview on the administrative theme only).
Markup: Typographic Smart Quotes
Convert straight quotes to smart quotes. Also can use SmartyPants PHP library (by Michel Fortin, based on SmartyPants by John Gruber) to provide further typographic replacement.
Markup: clickable email adresses - but with antispam
Makes email addresses clickabe, but obfuscates them to block spam harvester bots
MimeTex/LaTeX TeX Interpreter
Create Gifs from TeX expressions using MimeTex or LaTeX
Options for trustworthy editing on multi-user blogs / HTMLPurifier
This plugin can specify, which authors on a multi-user blog you have enough trust in and do not expect hacking attempts. All other users are treated as possibly evil and cannot create HTML entries.
Prettify for S9Y
Use Prettify to brush content between PRE tags for simple syntax highlighting.
Transforms HTML for comments
Allows to insert HTML tags in comments (instead of stripping the tags, they are now converted to entities). Needs to be first of all markup plugins in the event queue!