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cooltrblon Octotree – Proprietary Firefox extension contains AGPL-licensed code

Person A still have the IP of the software IMHO, so person A can do whatever with the software. Person B still have the latest-before-relicensed software, person B can fork or create new software based on latest-before-relicenced software.

Similarity like Qt software company doing the relicenced thing and Illumos project keeping latest-before-relicenced software.

cooltrblon Octotree – Proprietary Firefox extension contains AGPL-licensed code

The author IMHO can relicense their code to whatever their like.

Based on package.json only one author mentioned, Buu Nguyen <buunguyen@gmail.com>

[1]https://github.com/ovity/octotree/blob/master/package.json