Does REVEN integrate with IDA or Ghidra?

Yes, REVEN has integration with both.

The integration takes the form of a one way synchronization from Axion to IDA/Ghidra. When a transition is selected in Axion, the matching instruction in IDA/Ghidra is automatically selected.

To get more information about the plugin you can watch this video that shows the IDA integration or read the documentation.

REVEN also provides a Python API (for Windows and Linux) that allows you to build analysis scripts to enrich the IDA/Ghidra views/databases. Some Python IDA script examples can be found here.