Open source AI Agent frameworks

Bartosz Gonczarek Autor
Bartosz Gonczarek
Vice President, Co-founder
June 19, 2025

Open source AI Agent frameworks are publicly available software libraries and development platforms that provide foundational tools, APIs, and architectural components for building autonomous artificial intelligence systems. These frameworks offer pre-built modules for essential agent capabilities including natural language processing, decision-making algorithms, memory management, and external system integration, enabling developers to create sophisticated AI agents without building infrastructure from scratch. Popular frameworks include LangChain for language model orchestration, AutoGPT for autonomous task execution, CrewAI for multi-agent systems, and Microsoft’s Semantic Kernel for enterprise applications. Key features encompass modular architectures that support various language models, extensible plugin systems for custom functionality, and standardized interfaces for tool integration. These frameworks accelerate development cycles by providing tested components for prompt engineering, vector database connections, API integrations, and safety mechanisms. The open source nature enables community contributions, transparency in implementation, and cost-effective deployment compared to proprietary solutions. Enterprise adoption benefits from customization flexibility, vendor independence, and the ability to modify source code for specific requirements while leveraging community-driven improvements and security updates.