1、網易雲信
http://netease.im/
2、環信
http://www.easemob.com/customer/im
3、融雲
http://www.rongcloud.cn/
4、極光IM
https://www.jpush.cn/common/im/
5、容聯雲
http://www.yuntongxun.com/api/im
http://netease.im/
http://www.easemob.com/customer/im
http://www.rongcloud.cn/
https://www.jpush.cn/common/im/
http://www.yuntongxun.com/api/im