Open source
Open source software has public source code that anyone can read, use, and modify under the terms of its license. Many AI tools and agent frameworks are released this way.
Also known as: open-source
With open source software, the code is published, so users and developers can inspect how it works, run it on their own machines, and contribute changes.
Open source software can cost nothing to download, but running it still takes setup, maintenance, and responsibility for security.