GpgFrontend is a free, open-source, robust yet user-friendly, compact and cross-platform tool for OpenPGP encryption.
By using GpgFrontend, users can quickly encrypt files or text, easily digitally sign them, and conveniently manage all GPG keys on their device. The tool also facilitates the secure and seamless transfer of GPG keys between devices. It is compatible with a range of operating systems, including Windows, macOS, Linux, and FreeBSD.
A list of features
Most things work. I encountered issues in verifying signatures and exporting keys. The command line version did it well. I prefer Kleopatra
Finally a PGP-GUI Client that works! Just don't know where I can disable dark mode yet...