shortcodes: Allows you to use shortcodes (something like tags) in your model fields.
slugify: Lektor plugin that adds a slugify Jinja filter.
strip-html-tags: Strip HTML tags, effectively turning HTML into plain text.
thumbnail-generator: This plugin automatically generates thumbnails for any images in your Lektor content. The difference between this plugin and the `thumbnail` filter is that this is geared towards content, i.e. you don't need to have any references to the images in your templates at all.
webdav: Lektor plugin to get a list of files from a WebDAV server