FreeNATS is completely free, now and forever. Released entirely under open source licences, it's free to use or modify as you like. We don't offer different editions or premium options, one free size fits all!

Wide range of tests over a number of protocols, as well as nodeside monitoring to collect metrics such as load, disk usage, RAM, etc. All can be configured to alert on given ranges, record historically, and you can write your own and plug straight in.

Be up and running in minutes through the easy web-based configuration interface. Just install the source code, or download our pre-built VM or docker container, and start adding or discovering nodes in no time.