It would be possible for people to fork the community edition (<a href="https:&#x2F;&#x2F;github.com&#x2F;JetBrains&#x2F;intellij-community" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;JetBrains&#x2F;intellij-community</a>) and try and rebuild the most popular ultimate features.