If you're looking for a GroupMe alternative, Sendbird is worth a look. The service lets developers create their own messaging experience spanning multiple channels, including chat, SMS and voice and video chat. It offers features like targeted messaging, group chat, AI-powered chatbot conversations and message translation, so you can use it for personal or professional purposes.
If you want to organize group conversations, Sendbird can be customized for your needs. It's got very abstracted APIs, SDKs and UI kits for different platforms, so it should be easy to integrate with most software. Sendbird also offers a range of pricing levels, including a free developer plan, that can be useful if you're testing or running a small project.
Another contender is Avoma, an AI Meeting Assistant designed to automate meeting coordination. It's primarily a tool for optimizing meetings and improving collaboration, but it can also help you organize group chats with its transcription, summarization and analysis abilities. Its integration with calendar tools and other meeting services could be useful for keeping track of and summarizing group chats.
These alternatives offer powerful features to help you organize and manage group communications.