Adds Sticky Sidebar and Accordion Widget features to your WordPress sites.
Standard Widget Extensions is extension for WordPress themes. It's effective for themes which use widgets in a standard manner.
Current version of the plugin offers following two features. You can individually turn on and off these features.
You can use this plugin easily with default WordPress themes (Twenty Fourteen, Twenty Thirteen, ...). Check setting information.
Other theme users can adjust class names and/or IDs to suit the theme. You can find options for the plugin by selecting a menu 'Settings' - 'Standard WE'. Detailed description for parameters are in the plugin homepage.
I would appreciate your feedback of settings for your favorite themes. Or if you don't know how to set IDs/classes for your theme, don't hesitate to ask it in the support forum.