There are 2 repositories under gentoo-ebuilds topic.
My gentoo overlay, there's a ebuild for separate qtsdk workspaces if you want to develop with many qtsdks, slic3r prusa edition and some ebuilds for my projects, and other stuff that I'm using or used
Gentoo Overlay for Icinga2 checks
Gentoo’s portage overlay with packages for personal use.
Personal portage overlay
My Gentoo repository and ebuilds
MrPenguin's custom Gentoo ebuilds & overlay
Mirror of Randall's Portage ⛵ Overlay
Gentoo Overlay with some new or modified ebuilds
A static clone of the repository pantera31752/open-overlay. The original repo does not exist anymore. I have no plans of making any updates.
This overlay contains gentoo ebuild's to build addons from the source for the game Serious Sam Classic
A Gentoo repository (overlay) for xoreos
Secure, Git-based Gentoo ebuild retrieval
Repository to store and share ebuilds for Gentoo Linux.
Personal ebuild repository containing ebuilds that I could not find anywhere else. Suggestions/Pull requests more than welcome
Lab Overlay - Some useful applications that I did not find in the official repository
A Gentoo repository containing mostly GNOME/GTK-related ebuilds which are not in the main/GURU repos
Amasaki Shinobu's Public Overlay for Gentoo Linux.
My personal Gentoo overlay (ebuild package repository)
Personal ebuild repo for Gentoo Linux.
Historical archive of the original Gentoo ebuild repository migrated from CVS.
Gentoo overlay with ebuilds by James Cherti that are not in the Gentoo tree
Custom ebuild repository for Gentoo Linux