The Oracle Enterprise Manager 13c Release 3 (13.3.0.0) is available for following Operating Systems:
- Linux x86-64 (64-bit)
- Windows x86-64 (64-bit)
- Solaris Operating System (SPARC)
- Solaris Operating System (x86-64)
- IBM AIX on POWER Systems (64-bit)
- HP-UX Itanium (64-bit)
Unfortunately the Documentation for Oracle Enterprise Manager 13c Release 3 (13.3.0.0) is currently not yet uploaded under https://docs.oracle.com/en/enterprise-manager/ . I hope it will be uploaded within the next days.