Ecosyste.ms: Packages
An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.
vcpkg.io "application" keyword
itay-grudev-singleapplication 3.5.1 💰
Replacement of QtSingleApplication for Qt 5 and Qt 6 with support for inter-instance communication1 version - Latest release: 5 months ago - 780 stars on GitHub