Symphony.

A new extension, "Improved Page Resolve" is now available for download. Comments and feedback can be left here but if you discover any issues, please post it on the issue tracker.

Improved Page Resolve allows you to create index page with parameters and show it without a need to include its handle in URL.

Does this have any additional features compared to Root Page Params?

Hmm... looks like it does not. I wrote it long time ago, before Root Page Params (i compared dates of first commits :), and noticed it's not listed here.

I can remove it to keep list of extensions clean.

I think that they work a bit different way (just looking at the code).

This extension has less features, but also keeps overall number of database calls the same (because data it gets from database is used by Frontpage later).

Root Page Params calls Frontend->resolvePage again, so that function is run twice. I understand that's needed for additional features, but if someone does not need them, that will just make things slower (probably just a tiny bit, but still).

I don't think we need two extensions that do the same thing.

It is not exactly the same, but feel free to remove it - it will stay on github if anyone else finds it useful (like i do, obviously :).