List of the Top 3 AI Agent Builders for CrewAI in 2025

FastAgency is a groundbreaking open-source framework designed to simplify the process of transitioning multi-agent AI workflows from initial prototypes to fully operational systems. It presents a unified programming interface that integrates seamlessly with various agent-based AI frameworks, empowering developers to implement agent-driven workflows in both experimental settings and live environments. With features like multi-runtime support, seamless external API integration, and a command-line interface for orchestration, FastAgency facilitates the development of scalable architectures for deploying AI workflows with greater ease. Currently, it is compatible with the AutoGen framework, and there are plans to extend this compatibility to include CrewAI, Swarm, and LangGraph soon. This adaptability allows developers to transition between different frameworks with ease, choosing the one that best fits their specific project needs. Furthermore, FastAgency offers a shared programming interface that enables developers to create vital workflows once and apply them across diverse user interfaces, significantly reducing the need for redundant coding and improving overall productivity in AI development. Consequently, FastAgency not only speeds up the deployment process but also promotes innovation and collaboration among developers, ultimately enhancing the AI ecosystem as a whole. This collaborative environment encourages developers to share insights and techniques, further driving advancements in AI technology.

AI Crypto-Kit provides developers with essential resources to build crypto agents, enabling seamless integration with leading Web3 platforms like Coinbase and OpenSea, thereby facilitating the automation of a wide range of crypto and DeFi activities. With just a few clicks, developers can design AI-based automation solutions that include trading agents, community reward systems, Coinbase wallet management, portfolio monitoring, market analysis, and yield farming techniques. The platform features tailored attributes for crypto agents, offering robust authentication management that supports OAuth, API keys, JWT, and automatic token refreshes; it enhances LLM function calling to ensure enterprise-grade reliability; and it maintains compatibility with over 20 frameworks such as Pippin, LangChain, and LlamaIndex. Furthermore, it connects with more than 30 Web3 services, including Binance, Aave, OpenSea, and Chainlink, while also providing SDKs and APIs for easy implementation in agentic applications built in Python and TypeScript. This groundbreaking solution not only streamlines the development journey but also enables users to fully leverage the capabilities of the decentralized financial landscape. By simplifying access to powerful tools and frameworks, AI Crypto-Kit fosters an environment where innovation in crypto technologies can thrive.

Dendrite is a flexible platform that functions independently from any particular framework, enabling developers to create web-based tools for AI agents that can authenticate, interact with, and collect data from various online sources. This groundbreaking system replicates human browsing behaviors, facilitating AI applications in exploring websites and retrieving information with ease. It includes a Python SDK, which provides developers with vital tools to build AI agents that can engage with web elements and extract pertinent data. The adaptable characteristics of Dendrite ensure it can integrate smoothly into any technology stack, making it an excellent option for developers aiming to enhance the web interaction capabilities of their AI agents. Furthermore, the Dendrite client securely syncs with authentication sessions already in place within your local browser, removing the necessity to share or store sensitive login credentials. The Dendrite Vault Chrome Extension also allows users to securely share their browser-based authentication sessions with the Dendrite client, adding another layer of convenience and security. In addition to these features, Dendrite is designed to be user-friendly, ensuring that developers can easily implement its functionalities. Ultimately, Dendrite equips developers with the tools to foster intelligent web interactions, simplifying the incorporation of AI into routine online activities.