| Provider | HTTP/2 | TLSv1.3 | Powered By | Notes |
|---|---|---|---|---|
| JVM default | Java 9+ | Java 11+ | OpenJDK | |
| Android default | ✅ | Android 10+ | BoringSSL | |
| GraalVM | ✅ | OpenJDK | Only actively tested with JDK 11, not with 8 target | |
| Bouncy Castle | ✅ | Bouncy Castle | Tracking bug. | |
| Conscrypt | ✅ | ✅ | BoringSSL | Activated if Conscrypt is first registered provider. |
| OpenJSSE | ✅ | OpenJDK | OpenJDK backport. | |
| Corretto | ✅ | ✅ | OpenSSL | Amazon's high-performance provider. Tracking bug. |
All providers support HTTP/1.1 and TLSv1.2.