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FastGPT Alternatives in 2026

The best 8 open-source FastGPT alternatives in 2026, ranked by GitHub stars. Find free, self-hosted replacements for FastGPT.

8 Alternatives
100% Open Source
Free To Self-Host

What are the best FastGPT alternatives in 2026?

The best open-source FastGPT alternatives in 2026 are Langflow, Dify, Flowise, QAnything, MaxKB. These tools cover the same use cases as FastGPT — knowledge-based platform for building rag and ai workflows — with the advantage of being open-source, free to self-host, and backed by active communities. Top picks are ranked by GitHub stars and community adoption, so you can find a drop-in replacement that fits your workflow.

#1
Langflow ★ 153k+ Top Pick

Visual framework for building AI agents and RAG apps

agent workflow rag open-sourceMIT
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#2
Dify ★ 153k+ Top Pick

Open-source LLM app development and orchestration platform

agent platform workflow open-sourceApache-2.0
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#3
Flowise ★ 55k+ Top Pick

Drag-and-drop UI to build LLM workflows

agent workflow no-code open-sourceApache-2.0
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#4
QAnything ★ 14k+

NetEase's local knowledge base Q&A system

agent rag local open-source
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#5
MaxKB ★ 12k+

Open knowledge base Q&A system with RAG and agents

agent rag knowledge-base open-source
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#6
Bisheng ★ 12k+

Enterprise generative AI platform for intelligent workflows

agent enterprise workflow open-source
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#7
R2R ★ 8.0k+

Production-ready RAG framework with knowledge graph support

agent rag knowledge-graph open-source
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#8
n8n ★ 202k+

Low-code workflow automation with 400+ integrations and AI

automation workflow no-code open-sourceSustainable Use License
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Last updated: Aug 28, 2026 · Curated by AI Tools Hub Editorial · About · Contact · Privacy