The BSD License is a permissive free software license that allows software to be freely used, modified, and distributed. It originated from the Berkeley Software Distribution (BSD) operating system and is known for its simplicity and flexibility. The license imposes minimal restrictions on how the software can be used, making it popular among developers who want to encourage collaboration and innovation. One of the key features of the BSD License is that it allows proprietary use of the software. This means that developers can incorporate BSD-licensed code into their own projects, even if those projects are not open source. This has led to widespread adoption in various software projects, including those related to Linux, Apache, and FreeBSD.