smack
SMSHub
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smack
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Turn your Android phone into SMS API gateway
Built something similar that runs on a Raspberry Pi: https://github.com/livioso/smack
SMSHub
What are some alternatives?
traccar-sms-gateway - Traccar SMS Gateway for Android
android-sms-gateway-server - Android App, which allows you to send and receive sms via REST-API
QKSMS - The most beautiful SMS messenger for Android
android-smsmms - Library for easily sending SMS and MMS for Android devices
pytunes - 🎵 Self-hosted music streaming service
gat-app - Android app for sending several types of SMS like Class 0 (Flash SMS), Type 0 (Silent SMS), Message Waiting Indicator
KalSMS - Simple SMS gateway running on Android
matrix-sms-bridge - Matrix bridge, that allows you to bridge matrix rooms to SMS with one telephone number only.
voipms-sms-client - Popular Android messaging app for VoIP.ms, a Canadian VoIP provider
sms-predator-scan - Scans all the SMS of an Android device for any known domain that is related with the spyware Predator by Cytrox / Intellexa.