Slack, Microsoft Teams, Rocket.Chat, Wickr, Kik, Talkatone, Plus Messenger, Mattermost, WeChat, FaceFlow, Kosmi, Tango, Viber, Matrix.org, ICQ, Yahoo! Messenger, Threema, Camfrog, WhatsApp Web for Chrome, TeleGuard, Xabber, Tox, Spike, Spectrum Chat, GO SMS Pro, Axolotl, GroupMe, Messenger Lite, RebTel, Dasher Messenger, Handcent SMS, Priority Matrix, Crust Enterprise Messaging, Plumm, Empathy, Gitter, Chatzy, Zoho Cliq, Linkello, JayPad, Paltalk, KakaoTalk, Telegram X, AChatRoom, mySMS, textPlus, chompSMS, MXit, Tencent QQ, Olvid, Hack Chat, mjoy, Corteza Messaging, Voice Share, Phoner Second Phone Number, monocles chat, Carrot.io, Nimbuzz, Quill Messaging, ChatSecure, Conversations, Mini WA+, Databag, Tinychat, BlackBerry Messenger, Toky, Libon, SureSpot, dirc, GBWhatsapp, FluffyChat, ringID, YAATA SMS, ToTok, Tinode, WorldChat, qTeams, Ripcord, Telephone, Workchat, Say Hi!, Bettergram Messenger, Messenger for WhatsApp, Async, Done Hui, Pychat, Voxer, Mixsii, Engage Spaces, WowApp, Talkonaut, Delta Chat, Coco Voice, Skype Lite, QuteCom, Voxeet, Safe Text, uShare.to, Ziggs, Instantbird, Kiax, Cyanide, LeggoChat, HeyWire, Chat Rooms, WAToolkit, Wispi, AltME, KeeperChat, We-Talk, WhatsDock, Bleep, WhatsGreen Multi Messenger, Voip Stunt, HipChat, shMessenger, pttdroid, WWChat, Smithy, Chat Online Live, Talk2Me, Peerio, Jappix, Wassapp, HeyTell, Sicher, RemoteHQ, Crugo, GV Connect, AVAILO, Dingaling, Braid Chat, Tribe Messaging, SumRando Messenger, GYachI, goober Messenger, KNCTR, Jongla, Ayttm, yaxim, JuzFrens, Speak Messenger, BeejiveIM, QuickMSG, Cotap, Photo4Tune, Bopup Messenger, Sblack, Intraboom, Subrosa, Talkray, TribeScale, Bistri, Slenke, JANDI, Numbertank, Spotbros, PingPal Messenger, MyENIGMA, Spika, BlackBerry Messenger Enterprise, Tribecube, Lemon Group Messenger, EonPhone, Tkabber, forfone, Secret Messenger, Voxalot, QUGO, Instazzap for WhatsApp Web, Gaption, collAnon, Mi Airit, Adamant Messenger, VoicePing, Protonet SOUL, Cnectd, Skarpline, Bravis, Qnext, GAM Messenger, SeaFour.club, Fuse Chat, Secure Chat are some alternatives to Zulip.