I am the main author and maintainer of iPXE and wimboot.

For substantial work on iPXE or wimboot (such as adding a new feature, adding a new hardware driver, supporting a new cipher suite, or reviewing a substantial pull request) please email vendor-support@ipxe.org for a commercial quotation.

For small tokens of thanks for e.g. fixing a minor bug or reviewing a very short pull request, a one-time contribution to cover the cost of the coffee and/or cake consumed during the process is always welcome. 🙂