The plugin API is extremely flexible and most plugins are designed to be portable and re-usable across applications. Below is an incomplete list of available plugins, all tested with the latest version of bottle and ready to use.
Have a look at Plugins for general questions about plugins (installation, usage). If you plan to develop a new plugin, the Plugin Development Guide may help you.
Bottle-SQLite: Adds support for SQLite databases.
Bottle-Werkzeug: Integrates the werkzeug library (alternative request and response objects, advanced debugging middleware and more).
profile: This plugin collects profiling data and displays it in the browser.