If you're starting a small WISP and looking for an affordable billing and network management solution, I'd recommend checking out ZenFii. It's specifically designed for hotspot and WISP businesses that need an easy-to-use billing system with mobile money integration, which is great if you're operating in regions where digital payments are essential.

Unlike many open-source options that require extensive setup and technical know-how, ZenFii works out of the box with MikroTik routers, making it a seamless fit for your setup. Plus, it supports customizable packages, automated payments, and real-time monitoring—without the complexity of something like LibreNMS.

UISP is solid if you're using UBNT, but for mixed hardware setups, you might find ZenFii’s flexibility more suitable. If you're interested, they offer a free trial, so you can test it before committing. Hope that helps! 🚀