Business Source License 1.1
Jordan Newell
Interleaf (the Obsidian message-bus plugin and related source)
Four years from the date each version of the Licensed Work is published
GPL Version 3.0 or any later version
Interleaf source is available for non-production use — read it, hack on it, self-host it for yourself. Production use of the Licensed Work is limited per the Additional Use Grant in the license text.
When the Change Date for a given version passes, that version is released under the Change License and becomes free software.