The Epeios project is a group of free (AGPL licensed) software components. Source code is hosted on GitHub :
Almost all Epeios software works with GNU/Linux (and probably other POSIX compliant operating systems), macOS and Windows, on IA-32, AMD64 and ARM (AArch32 and AArch64, like those on Raspberry Pi, Banana Pi, ODROID… devices) architectures. .
You can me hire as consulting engineer for the conception and development of your own software components.