Brett

Frontend Features: 
 – adds a toolbar to the bottom of WordPress pages that will show meaningful information that helps developers to create optimized WordPress sites. 
 – Info includes SQL queries, query vars, peak memory usage, and a filetrace.
Backend Features: 
 – Provides a very basic checklist with suggestions for development. 
 – Shows basic server stats and information 
 – phpInfo 
 – WP rewrite rules (coming soon)

Developer Toolbar

Adds easy to access data for developers, including a fixed toolbar to the bottom of pages that shows query data and memory usage among other data.

Every once in awhile you want the tabindex to follow a different pattern than the default order. This plugin allows you to set the tabindex for each field, so you can control the tabbing behavior of your forms.
Javascript & jQuery are required.

Gravity Forms – Tab Index

Gravity Forms Add On.  Adds custom tabindex field to the "Advanced" tab for form fields.

Developer Toolbar vs Gravity Forms – Tab Index