What are some alternatives?
When comparing Mini WA+ and aTalk, you can also consider the following products
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Zulip - Powerful open source group chat
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Tinode - Tinode Instant Messaging
Dasher Messenger - Dasher lets you do more than just text message. It's messaging with benefits:
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.