they can just request a bunch of licenses from Atlassian, they provide free software for open source projects.<p><a href="https:&#x2F;&#x2F;www.atlassian.com&#x2F;software&#x2F;views&#x2F;open-source-license-request&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.atlassian.com&#x2F;software&#x2F;views&#x2F;open-source-license...</a>