Scan your project to find specific references
Has the size and complexity of your project ever driven you crazy? Do you sometimes spend hours looking for where you put that one bit of scripting? Have you ever come back to something after weeks or months, and you can't find how the pieces of a quest fit together anymore? RM 2003 had an Event Search command that could help with this, but XP doesn't.
RMXP Scanner is designed to help with that. It scans every map in your project and looks for event commands that reference a specific object ID, then reports their location. Suddenly, tracking down missing bits of project logic becomes much simpler!
Update 11/18/15:
New release! It comes with VX Ace support, the ability to define your own command search filters, and the ability to open a map and view the data in (more or less) human-readable JSON format. (Which can be useful for figuring out what to put in a search filter, if you need one that's not provided by default!)
Update 02/14/16:
And another new release. This one adds a tree control that makes viewing the contents of a file a bit simpler. It also adds two powerful new commands for search filters: Any and All.
The Any command creates a sub-expression block where the matching rule changes. Instead of having to match all the sub-expressions, the command being considered will validate if it matches any of them. The All command can be nested inside an Any command, and switches the matching mode back to normal for the expressions inside its block. (This can be useful if you want a filter that matches two different event commands with different configurations: create filters for the two different commands, put each one inside an All block, and put the two All blocks inside an Any block.)