Based on several criteria and detailed analysis, here is the list of top 10 inapp Messaging Platforms that provide the best Chat API & Messaging SDK Solutions. 1.CONTUS MirrorFly 2.Twilio 3.PubNub 4.Cometchat 5.Sendbird 6.Apphitect IM 7.Qucikblox 8.Applozic 9.Agora 10.Mesibo