Replika
Well-known AI companion app focused on long-term relationships and daily conversation.
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Pi by Inflection
Supportive, empathetic AI companion with a clean UX and voice; web and mobile.
JannyAI (formerly JanitorAI)
Large roleplay platform with extensive character catalog and user-created bots.
Character.AI
Chat with millions of AI characters or create your own; huge community and web/app access.