Completely Free Autonomous AI Agents (Well-Reviewed)

• Manus AI - Manus AI, autonomously handles tasks like research and execution, highly customizable.
• OpenManus - Open-source alternative to Manus AI, autonomously handles tasks like research and execution, highly customizable.
• Auto-GPT - Uses GPT-4/GPT-3.5 to break down goals into subtasks, executes them autonomously, well-regarded in open-source circles.
• BabyAGI - Task management AI that prioritizes and executes tasks independently, praised for simplicity and effectiveness.
• AgentGPT - Browser-based, fully free autonomous agent for goal-driven tasks, noted for ease of use.
• Open Interpreter - Runs code and tasks via natural language locally, highly reviewed for developer utility.
• AgentGPT - Allows users to configure and deploy autonomous AI agents by simply naming the agent and defining its goal.
• Botpress - An open-source platform for building AI agents with a visual workflow design, extensive AI integrations, and multi-channel support.
• Rasa - An open-source framework for building conversational AI agents, providing tools for creating contextual and layered conversations.
• LangChain - An open-source framework designed to build applications powered by language models, facilitating the creation of context-aware and reasoning AI agents.

Autonomous AI Agents with Free Tiers

• SWE-Agent - Free tier for coding tasks, autonomously writes and debugs code, competitive with paid tools like Devin.
• NexusGPT - Free tier includes basic agent creation, praised for no-code automation, paid for advanced integrations.
• HyperWrite - Free tier automates browser tasks, well-reviewed for productivity, premium unlocks more features.
• ChatDev - Free tier simulates a software company with multiple agents, noted for collaboration, paid for scale.
• Cognosys 2.0 - Free tier for decision-making and analytics, appreciated for insights, paid for larger datasets.
• Fine-Tuner.ai - Free tier for basic AI agent creation, no coding needed, well-liked for accessibility, paid for customization.
• Voiceflow - Offers a free plan that allows users to create and deploy AI agents, making it suitable for businesses exploring AI without immediate investment.
• Relevance AI - Provides a platform to build and recruit autonomous AI agents, offering free templates and starter agents to get started.
• Zapier Central - A no-code AI agent builder that integrates with Zapier’s extensive catalog of apps, allowing for easy creation of AI agents without coding knowledge.
• Salesforce Agentforce - Offers a free tier for existing Salesforce customers, enabling the building and deployment of autonomous AI agents integrated within the Salesforce ecosystem.
• Taskade AI Agents - Provides AI-powered solutions for project management, productivity, and marketing, with free access to certain features.