Right now it's a collection of a few tools:
• AWS Resource Explorer - a lighter-weight version of the AWS console where everything is just a sortable/filterable/searchable table.
• Access Denied Debugger - paste an "AccessDenied" message and get back a stack-trace style UI showing all the resources involved, reason for the error (e.g., which policy is missing a permission), recent changes via CloudTrail, etc.
• AWS Organizations / SCP Viewer - generates a tree-diagram style UI showing all your AWS accounts, which policies apply to them, etc.
Still working on merging these into a cohesive application (mostly just been scratching my own itches so far). I'm trying to consider privacy/security carefully, so everything is client-side, using the AWS JavaScript SDK, and creds/data are only stored locally.