Alternatives to FastGPT
A self-hostable platform for building knowledge-base question answering and AI workflows on top of LLMs. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
FastGPT
A self-hostable platform for building knowledge-base question answering and AI workflows on top of LLMs.
Replacements
Listings that take over the same core job as FastGPT.
MaxKB
An open-source, self-hosted platform for building knowledge-base question answering and AI agents.
MaxKB is an open-source, self-hosted platform combining RAG knowledge bases with agent building, though some of its material is primarily in Chinese.
RAGFlow
An open-source, self-hostable RAG engine with document ingestion, hybrid search and a visual agent builder.
RAGFlow is an open-source RAG engine with an ingestion pipeline for many formats, hybrid search with re-ranking and a visual agent builder with MCP support.
Kotaemon
An open-source, self-hosted RAG app for chatting with your documents using local or hosted models.
Kotaemon is an open-source, self-hosted RAG app for chatting with documents through a web interface, simpler in scope and without a visual workflow editor.
AnythingLLM
A desktop AI app that answers questions about your own documents, with no account and no API key needed.
AnythingLLM is an MIT-licensed desktop app bundling chat, vector database and document pipeline in one install, aimed at individuals rather than server deployments.
SurfSense
An open-source, self-hostable research agent and NotebookLM alternative that answers questions over your documents.
SurfSense is an open-source, self-hostable research agent that answers questions over your documents and connected sources, can run air-gapped and includes an MCP server.
LocalGPT
A self-hosted tool for asking questions about your own documents using local language models.
LocalGPT is an MIT-licensed tool for private document Q&A with hybrid search and Ollama models, but it has no packaged releases and is set up from source.
Also worth comparing
These listings name FastGPT as their own alternative, so the relationship runs both ways.
Dify
Self-hosted platform for building AI agent workflows and RAG pipelines.
FastGPT is a self-hostable knowledge-base Q&A platform with a visual workflow editor, though its licence terms are not stated and some features are in pro components.
Langflow
Visual builder for creating and deploying AI agent workflows.
FastGPT is a self-hostable platform with a visual workflow editor focused on knowledge-base Q&A, though its licence terms are not stated.
PrivateGPT
A self-hosted API layer for building private AI applications on top of local language models.
FastGPT offers knowledge-base question answering with a visual workflow editor on your own servers, though its licence terms are not stated and some features are pro components.
Similar software
Related functionality, not a direct replacement.
Khoj
Open-source AI second brain that researches across your documents and the web with any model.
Open Notebook
Self-hosted, open source alternative to Google's NotebookLM.
GPT Researcher
An open-source autonomous agent that researches the web and local documents and writes cited reports.
GPT4All
A local AI chat app with document chat built in, from Nomic AI. Stable, MIT licensed, but not updated since early 2025.
Local Deep Research
A self-hosted research assistant that runs multi-step searches with local or cloud language models.
