3. WsprotoSans-IO WebSocket protocol implementation
4. Rfc3986A Python Implementation of RFC3986 including validations
6. PriorityA pure-Python implementation of the HTTP/2 priority tree.
7. H2HTTP/2 State-Machine based protocol implementation
8. H11A pure-Python, bring-your-own-I/O implementation of HTTP/1.1
9. certitudeA small library that makes the OS X keychain-based certificate store available to OpenSSL in a format that OpenSSL appreciates.