Copyright 2019-2021, Budibase Inc.

Each Budibase package has its own license:

builder: GPLv3
server: GPLv3
client: MPLv2.0
standard-components: MPLv2.0

You can consider Budibase to be GPLv3 licensed. 

The apps that you build with Budibase do not fall under GPLv3 - hence why our components and client library are licensed differently.