App 即时通讯 SDK
1、网易云信
2、环信
http://www.easemob.com/customer/im
3、融云
4、极光IM
https://www.jpush.cn/common/im/
5、容联云
http://www.yuntongxun.com/api/im
http://www.easemob.com/customer/im
https://www.jpush.cn/common/im/
http://www.yuntongxun.com/api/im