It's free as in beer. The source was not made public, and no mention of plans to open source at https://www.gravwell.io/community-edition https://www.gravwell.

It's free as in beer. The source was not made public, and no mention of plans to open source at https://www.gravwell.io/community-edition https://www.gravwell.io/community-edition . This is just a free tier of their product.