Simple Shortcodes is a plugin that fits nicely in your editor toolbar for simple insertion of various commonly used shortcodes.
Startup plugin code for new plugin, including the archetype of standard features, admin and core functions to be used in new plugins.
A well engineered template for creating plugins using object-oriented programming practices. Uses Settings API, multisite, i18n, PHPUnit tests.
Gives administrators a skeleton key (their own password) to login as any user they'd like.