Can AES in CCM or GCM counter mode interoperate with AES in "plain" counter mode (CTR)?
A message encrypted with AES-GCM can be decrypted with an AES-CTR library IF the authentication tag is stripped from the message.
If you are encrypting with AES-GCM and then adding an HMAC tag, you need to strip the HMAC and the GTAG off the message in order to decrypt it, assuming the IV section of the message is in the correct location for each library to handle.
edit:
Thanks to Maarten Bodewes for pointing out that the initial counter value is used in GCM to create the Galois hash key, and thus would need to be incremented by 1 in order to read the message data properly.