Is BotSharp free to use?

Yes. BotSharp has a free plan — Open-source, MIT-compatible license

Does BotSharp have memory?

Yes. BotSharp retains conversation memory across sessions.

What are the best alternatives to BotSharp?

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BotSharp Review

botsharp.readthedocs.io →

Open-source .NET/C# LLM application framework for building enterprise-grade conversational AI agents, chatbots, and multi-modal pipelines.

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Verdict

BotSharp is a modular, plugin-based AI framework targeting .NET enterprise developers who want to build LLM-powered chatbots and virtual assistants without relying on Python-centric tooling like LangChain. It covers the full stack — NLU, routing agents, vector storage, knowledge base Q&A, and channel integrations (Messenger, WeChat) — with a strong emphasis on typed-language safety and code refactoring ergonomics. The main tradeoff is its C#/.NET requirement, which limits the audience compared to Python-first alternatives, and its documentation is less mature than LangChain or LlamaIndex.

Best for

Enterprise developers and businesses looking to build custom conversational AI applications

At a glance

Free planYes

Login requiredNo

MemoryYes

VoiceNo

Image generationNo

Group chatNo

Mobile appNo

NSFW policyNot applicable

PricingFree — Open-source, MIT-compatible license

Pros & cons

Pros

Full enterprise AI stack in native .NET/C#
Highly modular — swap vector store, LLM provider, UI independently
Supports local LLM models via LlamaSharp
Built-in routing agents, conversation state, and knowledge base Q&A

Cons

Requires .NET and C# expertise — excludes Python-first developers
Documentation less mature than LangChain/LlamaIndex
Smaller ecosystem and community than Python alternatives
No hosted or managed deployment option

Related tools

Frequently asked

Is BotSharp free to use?: Yes. BotSharp has a free plan — Open-source, MIT-compatible license
Does BotSharp have memory?: Yes. BotSharp retains conversation memory across sessions.
Can BotSharp do voice or images?: Voice: no. Image generation: no.
What are the best alternatives to BotSharp?: Browse the AI Tools Directory for related tools.

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Notes from users

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