* http (much more friendly than [libcurl](https://curl.haxx.se/libcurl/)), h2/h2c (compatible with [grpc](https://github.com/grpc/grpc), will be opensourced soon)
*[redis](docs/cn/redis_client.md) and [memcached](docs/cn/memcache_client.md), thread-safe, more friendly and performant than the official clients
*[rtmp](https://en.wikipedia.org/wiki/Real-Time_Messaging_Protocol)/[flv](https://en.wikipedia.org/wiki/Flash_Video), for building live-streaming services.
*[streaming_rpc](docs/cn/streaming_rpc.md)
* all sorts of protocols used in Baidu: baidu_std, [streaming_rpc](docs/cn/streaming_rpc.md), hulu_pbrpc, [sofa_pbrpc](https://github.com/baidu/sofa-pbrpc), nova_pbrpc, public_pbrpc, ubrpc, and nshead-based ones.
