Ecosyste.ms: Packages
An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.
vcpkg.io "reactivex" keyword
reactiveplusplus 2.0.0
ReactivePlusPlus is reactive programming library for C++ language3 versions - Latest release: 2 months ago - 152 stars on GitHub
rxcpp 4.1.1
Reactive Extensions for C++1 version - Latest release: over 1 year ago - 2 dependent packages - 129 dependent repositories - 2,776 stars on GitHub