langchain/docs/explanation/cool_demos.md
2022-11-29 20:08:00 -08:00

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# Cool Demos
Lots of people have built some pretty awesome stuff with LangChain.
This is a collection of our favorites.
If you see any other demos that you think we should highlight, be sure to let us know!
## Open Source
### [ThoughtSource](https://github.com/OpenBioLink/ThoughtSource)
A central, open resource and community around data and tools related to chain-of-thought reasoning in large language models.
### [Notion Database Question-Answering Bot](https://github.com/hwchase17/notion-qa)
Open source GitHub project shows how to use LangChain to create a
chatbot that can answer questions about an arbitrary Notion database.
### [GPT Index](https://github.com/jerryjliu/gpt_index)
GPT Index is a project consisting of a set of data structures that are created using GPT-3 and can be traversed using GPT-3 in order to answer queries.
### [Grover's Algorithm](https://github.com/JavaFXpert/llm-grovers-search-party)
Leveraging Qiskit, OpenAI and LangChain to demonstrate Grover's algorithm
## Not Open Source
### [Daimon](https://twitter.com/sjwhitmore/status/1580593217153531908?s=20&t=neQvtZZTlp623U3LZwz3bQ)
A chat-based AI personal assistant with long-term memory about you.
### [Clerkie](https://twitter.com/krrish_dh/status/1581028925618106368?s=20&t=neQvtZZTlp623U3LZwz3bQ)
Stack Tracing QA Bot to help debug complex stack tracing (especially the ones that go multi-function/file deep).
### [Sales Email Writer](https://twitter.com/Raza_Habib496/status/1596880140490838017?s=20&t=6MqEQYWfSqmJwsKahjCVOA)
By Raza Habib, this demo utilizes LangChain + SerpAPI + HumanLoop to write sales emails.
Give it a company name and a person, this application will use Google Search (via SerpAPI) to get
more information on the company and the person, and then write them a sales message.
### [Question-Answering on a Web Browser](https://twitter.com/chillzaza_/status/1592961099384905730?s=20&t=EhU8jl0KyCPJ7vE9Rnz-cQ)
By Zahid Khawaja, this demo utilizes question answering to answer questions about a given website.
A followup added this for [Youtube videos](https://twitter.com/chillzaza_/status/1593739682013220865?s=20&t=EhU8jl0KyCPJ7vE9Rnz-cQ),
and then another followup added it for [Wikipedia](https://twitter.com/chillzaza_/status/1594847151238037505?s=20&t=EhU8jl0KyCPJ7vE9Rnz-cQ).