If you want a messaging app with a lot of customization options and features like message archiving and snoozing, Texts is a great option. The app collects messages from multiple services like iMessage, WhatsApp, Telegram and others into a single inbox. It has search, archiving, unread flagging, snoozing and a customizable interface. It also has AI-powered chat summaries and canned responses, and it's a good option for personal and professional use.
Another good option is QuickBlox, which offers a highly customizable instant messaging foundation with APIs and SDKs that let developers build it into their web and mobile apps. It supports voice and video chat, push notifications, data storage and secure file sharing. It's geared for developers who want to build their own messaging foundation for things like businesses, schools and health care.
If you want to tap into AI in your messaging app, TextGPT brings ChatGPT right into iMessage so you can get expert advice and creative tools without having to open a separate app. The system lets you respond quickly and conveniently, and it's got a Canvas Creator tool to make custom wallpapers. It's a good option if you want AI built straight into your existing messaging app.