In August of 2023, HashiCorp changed its licensing model from MPL v2.0 (Mozilla Public License) to BSL v1.1 (Business Source License).
What does this mean? It means that HashiCorp products (Terraform, Vault, Consul, etc...) are no longer open source.
How does it affect us? Essentially, for typical end-users, HashiCorp integration partners, and HashiCorp commercial customers, there is no change. Products can be downloaded for free and used as needed. However, organizations that compete with HashiCorp will no longer be able to use the free community editions of HashiCorp products and instead will have to license the products.
How does the community feel about this? Feelings are mixed. For many organizations and individual users, there is no change, and so their view of HashiCorp hasn't changed much. For some organizations, the new BSL can be considered somewhat vague, and those organizations are forced to seek legal counsel. For organizations that have competitive offerings (and in some cases, have contributed to Terraform), there has been concern, confusion, anger, as well as fear. They contend that using the MPL as a way to grow a product line, and later changing to BSL, is dishonest, and exploits the open source community. In fact, they feel so strongly that several organizations have banded together to form the OpenTF Foundation. Their plan is to develop a Terraform fork called OpenTF. (No plans for other HashiCorp tools as of yet.)
As an advocate of open source software, I am always saddened when an organization chooses to change licensing from truly open source to something else.
As a user of HashiCorp products (including Terraform, Vault, Consul, Waypoint, Nomad, and Vagrant), I am unhappy, but not surprised. This move was contemplated for years and is not unprecedented. In fact, it has become a trend among tech companies over the past decade.
Like I say, I'm not surprised. The company has the word corp right in their name. They are a publicly traded company. They are in it to make money. But that doesn't make the pill any easier to swallow.
As of now, I will continue to use HashiCorp products for personal projects and with customers who use them. However, I will also keep an eye out for what OpenTF amounts to over the coming months/years. I will also keep an open mind about alternatives to HashiCorp products—Terraform especially. But ultimately, the decision for me is mostly defined by the products that my customers work with—the products that are heavily used in the field. Somewhat sad... but true.