Alternatives to Pipelex

Mirascope is an open-source Python library that turns LLM calls, tools, and prompt versioning into plain decorated functions.

Open-source LLM from UC Berkeley that turns natural language into API calls and tool-using agent actions.

Marvin is an open-source Python framework that turns ordinary functions into AI-powered tools using decorators like @ai_fn and @ai_classifier.

Open-source TypeScript framework for building durable AI agents and workflows, with a hosted platform for observability and cloud deployment.

Hermes Desktop is an open-source desktop GUI for the Hermes Agent, with a built-in learning loop that turns your tasks into reusable skills

Open-source Python library that turns messy text into typed, queryable Semantic DataFrames built on Polars

Open-source React toolkit for generative UI — let an agent render your own components from natural language

Zhipu GLM (Z.ai) ships the open-weights GLM-5.3 family, full-modality MaaS APIs, and autonomous agents like AutoGLM and GLM-PC.

Open-source multi-agent framework that assigns PM, architect, engineer and QA roles to LLMs for structured software tasks

Free MIT-licensed Python framework for multi-agent workflows with handoffs, guardrails, sandbox agents, and voice agents.

Open-source React framework for adding agent chat, generative UI, and shared state to any AG-UI backend.

Imbue is an open AI lab publishing modular, open-source coding-agent tools you run and inspect yourself.

Microsoft's developer framework for building, orchestrating, and hosting agentic AI on Azure, with Python, C#, and Go SDKs and a GA Agent Harness runtime.

Microsoft's open-source framework for building conversational and event-driven AI agents in Python and .NET.

Open-source TypeScript toolkit for building AI apps and agents across 100+ models with streaming, tools, and fallbacks

GitLab Duo is GitLab's agentic AI layer, adding specialized AI agents, code review, and policy-governed automation directly into DevSecOps workflows.

Open-source agentic data assistant: your LLM connects to databases, writes SQL and code, and runs analysis in sandboxes

Open-source Python library that constrains LLM decoding with finite-state machines so Pydantic, JSON Schema, regex, and grammar outputs come out valid every

Microsoft's open-source SDK for building AI agents and copilots with plugins, memory, and multi-agent orchestration.

Open-source Python library for constraining LLM output with regex, context-free grammars, and inline control flow — archived since October 2023.

BAML is a type-safe programming language for building AI agents and structured LLM output that compiles instead of guessing.

Microsoft's open-source, code-first Python framework for building stateful, data-intensive conversational AI agents.

Open-source, self-hosted AI agent whose SquillaRouter routes each step to cheap or flagship models to cut token cost.

OpenAI Cookbook is a free, MIT-licensed GitHub repository of example code and guides for working with the OpenAI API.

Eino is an open-source Go framework from ByteDance for building LLM apps, agents, and graphs in your existing Go backend.

Open-source, self-hosted AI agent that plans tasks, runs tools, and grows its own memory.

Open-source AI agent loop that iterates a task list in Docker Sandboxes and commits the results.

Open-source SuperAgent harness that researches, codes, and creates inside a persistent Docker sandbox — MIT licensed and self-hosted.

Open-source library of 817 structured cybersecurity skill files your AI coding agent loads on demand, mapped to MITRE ATT&CK and licensed Apache 2.0.

OpenUI is an open-source framework that lets AI agents stream interactive UI from your own React, Vue, Svelte or React Native components instead of raw JSON.