There's mention of open source, but it looks like MQTTParty is itself closed source? (The phrasing "It’s an MQTTParty and you’re all invited" seems misleading h

There's mention of open source, but it looks like MQTTParty is itself closed source? (The phrasing "It’s an MQTTParty and you’re all invited" seems misleading here: I interpreted to mean "we made this and everyone can use it.")