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Character.AI lets you create and chat with AI characters that have distinct personalities. From historical figures to fictional companions to helpful assistants, millions of users engage in creative roleplay and conversations with community-created characters.

Voiceflow is a collaborative platform for building AI agents and chatbots without code. Design conversation flows visually, integrate with LLMs, and deploy across web, mobile, and voice channels. Used by enterprises to create sophisticated customer-facing AI experiences.

Poe is an AI chat platform from Quora that gives you access to multiple AI models including GPT-4, Claude, Gemini, and open-source models in one interface. Create custom bots, compare model outputs, and explore thousands of community-created AI assistants.

Botpress is an open-source platform for building AI-powered chatbots and agents. Combines visual flow builder with natural language understanding and LLM capabilities. Self-host for full control or use their cloud for quick deployment.

Lindy AI is a personal AI assistant that automates work tasks through natural language. Create AI employees that handle email, scheduling, research, and custom workflows - connecting to thousands of apps without coding.

CrewAI is a framework for orchestrating multiple AI agents working together on complex tasks. Build teams of specialized AI agents that collaborate, delegate, and complete multi-step projects with defined roles and goals.

Google's autonomous AI coding agent that fixes bugs, writes tests, and adds documentation. Works asynchronously with GitHub repos, offering 15 free tasks/day.