楽天でんわ　-番号そのままで通話料がお得-

Text Free: Second Phone Number

Nextplus: Phone # Text + Call

Google Meet

Telegram

Smart Messages

Messenger

GroupMe

TextMe Up Calling & Texts

Google Voice

Firefox Fast & Private Browser

Messenger Kids – The Messaging

Phoner: Second Phone Number

Snapchat

Element Classic

Discord - Talk, Play, Hang Out

Skype

Pulse SMS (Phone/Tablet/Web)

Phone Call App & WiFi Call Any

WhatsApp Messenger

Marco Polo - Video Messenger

Microsoft Edge

Robokiller - Spam Call Blocker

Signal Private Messenger

Threema. The Secure Messenger