Comparison of instant messaging protocols Table of instant messaging protocols Table of instant messaging protocols

| Protocol | Creator | License | Transport_Layer_Security | Bulletins_to_all_contacts | Batch_file_sharing |
|---|---|---|---|---|---|
| Gadu-Gadu | GG Network | Proprietary | Yes | No | Yes |
| IRC | Jarkko Oikarinen | Open standard | Yes, depending on individual server support | No | No |
| Windows Messenger service | Microsoft | Proprietary (Discontinued) | No | Yes | No |
| MSNP ( Windows Live Messenger , etc.) | Microsoft | Proprietary | No | No | Yes |
| ( Mumble ) | Thorvald Natvig | Open standard | Yes | No | Yes |
| OSCAR ( AIM , ICQ ) | AOL | Proprietary | Yes (Aim Pro, Aim Lite) | No | Yes |
| RVP ( Windows Messenger , etc.) | Microsoft | Proprietary (Discontinued) | No | No | No |
| SIP / SIMPLE | IETF | Open standard | Yes | Yes | Yes |
| Steam Friends | Valve Corporation | Proprietary | Proprietary | Yes | No |