You might just be able to find it via Repology https://repology.org/.
To quote them:
If i'd had this in my bookmarks still, I could have saved a couple of hours searching, and a lot of scratching and a headache, which is why i've added it to our forum.Purpose
Repology is a service which tracks and compares package versions in more than 120 package repositories.
For package/port maintainers:
Discover new releases of software you maintain packages for
Find new projects to package
Get in touch with fellow maintainers to improve packages together
Keep package naming and versioning schemes in sync to other repos for your and your user's convenience
Fix problems detected by repology, such as broken links
For software authors:
Keep track of where and how well your project is packaged
Keep in touch with your product package maintainers
For users:
Discover new releases of software you use
Pick distribution most suitable for you, in terms of package quantity, freshness or stability
Keep in touch with maintainers of software you use
Supported repositories
Linux repositories: Adélie, Alpine, ALT, antiX, AOSC, Arch and AUR, BlackArch, Calculate, CentOS, CRUX, Debian, Deepin, Devuan, Distri, ELRepo, Entware-ng, EPEL, Exherbo, Fedora, Funtoo, Gentoo, Guix, GoboLinux, Hyperbola, KaOS, KISS, Kwort, Linuxbrew, Maemo, Mageia, Manjaro, Mer Project, Mint, MX Linux, Nix, OpenMandriva, openSUSE, OpenWrt, Parabola, Pardus, Parrot, PCLinuxOS, Pisi, PLD Linux, PureOS, Raspbian, Rosa, Sabayon, Salix, SlackBuilds, Slackware, SliTaz, Solus, SparkyLinux, SteamOS, T2 SDE, Tails, Trisquel, Ubuntu, Void, Whonix
*BSD repositories: DragonFly DPorts, FreeBSD ports, OpenBSD packages, pkgsrc, Ravenports
Third party repositories: Deb Multimedia, Gentoo overlays, KDE neon, OpenPKG, openSUSE additional repositories, PackMan, UnitedRPMs, RPM Fusion
Other *nix repositories: AIX Open Source Packages, Homebrew, HP-UX, OpenIndiana, MacPorts, Rudix
And non-*nix repositories: Chocolatey, Cygwin, F-Droid, HaikuPorts, just-install, MSYS2 (msys2, mingw), Npackd, OS4Depot, ReactOS rapps, Scoop, Termux, Vcpkg, YACP
Upstream module collections or programming language specific package managers: Buckaroo, CPAN, CRAN, crates.io, GNU ELPA, Hackage, LuaRocks, MELPA, PyPi, RubyGems, Stackage
F/OSS news sites: DistroWatch, freshcode.club, libregamewiki
Other sources: Wikidata
Just maybe, with it up here, i'll remember it's name and url next time I need to use it!!!.
thanks