Top alternatives to Semantic Kernel

Semantic Kernel is a open source in AI Agent. Here are the strongest alternatives, ranked by an explainable 4-dimension score.

● Data-backed · 525 nodes · updated 2026-09-13
#AlternativeOverallPop.Mom.Cred.Eco.
1PydanticAI · Agent Frameworks
Type-safe Python agent framework from the Pydantic team.
8374938381
2deer-flow · Agent Frameworks
An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.
8674998685
3Haystack · Agent Frameworks
Open-source framework by deepset for building production LLM and agent pipelines.
8184678989
4SmolAgents · Agent Frameworks
Lightweight library for building agents that write and execute code.
8785938482
5Goose · Agent Frameworks
Block's open-source extensible AI agent that automates engineering tasks locally.
8474938584
6lobehub · Agent Frameworks
🤯 LobeHub is your Chief Agent Operator, organizing your agents into 7×24 operations by hiring, scheduling, and reporting on your entire AI team.
8054998685
7LangChain · Agent Frameworks
LangChain — Agent Frameworks · AI Agent.
7958759797
8/dev/agents · Agent Frameworks
Startup building a new operating system designed for AI agents.
7974937370
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