ubus is described as 'User space inter process communication that adheres to the Unix philosophy' and is an app in the development category. There are three alternatives to ubus for Linux, BSD and Windows. The best ubus alternative is D-Bus, which is both free and Open Source. Other great apps like ubus are ØMQ and hyprtavern.
D-Bus is a message bus system, a simple way for applications to talk to one another. In addition to interprocess communication, D-Bus helps coordinate process lifecycle; it makes it simple and reliable to code a "single instance" application or daemon, and to launch...
ØMQ is a high-performance asynchronous messaging library aimed at use in scalable distributed or concurrent applications. It provides a message queue, but unlike message-oriented middleware, a ØMQ system can run without a dedicated message broker.
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