The CommunitySearch wiki aggregates many public wikis from the community. It is updated automatically every day. At the time of writing, more than 5000 tiddlers are indexed, thus giving access to the largest known collection of TW content.
An add-on for Google Drive that allows TiddlyWiki files stored there to be opened and saved directly. This is the link to the Github code. Search for 'TiddlyDrive' for link to extension on Chrome Playstore.
TiddlyWiki in the Sky using Dropbox enables you to directly edit TiddlyWiki files stored in your Dropbox. It runs entirely in your browser so your data is never uploaded anywhere except directly to your Dropbox account.
Streams is a keyboard friendly way to write and easily divide your text into separate tiddlers while writing. Every time you want a new tiddler, just hit Enter. A new tiddler is created in the background and you can just continue writing.
Plainrevs - you can... 1. show differences with the current version, 2. restore that revision, 3. pin it so it won't be deleted when the set max number of revisions is reached (as a snapshot, if you will), or 4. delete that revision.
NotoWritey - a tool that allows you to concentrate on writing documents one section (tiddler) at a time. By breaking documents down into their components, it makes it easier to follow the TiddlyWiki philosophy of tiddlers and to reference individual sections of your document for use in references and quote extraction.
Modular theme by bimlas - The Modular theme makes individual style modifications (stylesheet components) optional, so you can enable each change individually to create the look that works best for you.
Oneplaybook helps you quickly turn emails, chats, and files into custom wikis inside any cloud service like Google Drive and Dropbox, so you can build accessible knowledge bases and more for yourself, your team and your customers. Replacement for maarfapad
Columns - lets you present content inside a tiddler split up into columns. The content flows to equal out the colums heights and the view is responsive to tiddler width e.g as affected by device width.
Apply template - This plugin adds an apply-template button to the new Editor Toolbar to be shipped with release 5.1.12. Clicking on the beaker-shaped button applies the chosen template to the selection, by transcluding the template with the current tiddler argument set to the text currently selected.
ActionMakeTid - to create a new tiddler, with the built in functionality to set the values of the title, tags and fields. The new tiddler may be hidden, displayed in the story river or opened for editing.
Cherry Picker - apply "natural markers", made up as you type, to mark out segments ("cherries") in one or several tiddler texts. Call the cherrypicker macro to get the cherries extracted and presented as a list.
Recent tab with transclusion - Do you want your own personal Twitter-like feed in TiddlyWiki, so you can post your nuggets of wisdom, upload them, and let your users see a running list of them, sorted by most recent?
Wiki Log tool - allows you to enter a note, which is automatically time stamped (Recorded with a date and time) and maintained in a single document/tiddler. With this Wiki Log Tool if you make an entry from a specific Tiddler tiddler name can be optionally recorded as a link back to the tiddler.
DropHere tool - This an extension of the "New Here" functionality by adding a droppable area in a tiddler to tag the dropped tiddler with a tag of the tiddler containing this area. This will work to apply the tag to multiple tiddlers by dragging "tag pills" onto the area.