Apache OFBiz is suite of business applications that is flexible enough to be used across any industry. A common architecture allows developers to enhance or extend it to create custom features. It is an open source ERP that can also be used as a framework.
Yes Apache OFBiz is completely free. You can download and use it for free. You can find more details about the Apache 2.0 licence.
Apache OFBiz is a project that is part of the Apache Software Foundation (ASF). The ASF is a charitable foundation that produces software for the public good.
Apache OFBiz is maintained by its community. The community works together to identify and resolve any bugs or issues found. The changes are updated and if required backported to previous releases