Based on our record, opsdroid seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Have a look at https://opsdroid.dev/ it has Slack support, you can then bridge Slack/Discord with matterbridge or something to get functionality from both sides. Source: over 2 years ago
Hubot - Hubot is a standardized way to share scripts between everyone's robots.
Dialogflow - Conversational UX Platform. (ex API.ai)
Cog - Operable - Bringing the power of the command line to chat
BuildMaster - BuildMaster Software is an application release automation software that also specializes in release management. It was designed by Inedo, a software development company. Read more about BuildMaster.
Botpress - Open-source platform for developers to build high-quality digital assistants
Microsoft Bot Framework - Framework to build and connect intelligent bots.