---
title: "Deploy LangChain Apps"
description: "Sample LangChain apps for search, text, document, URL, and news summaries."
category: "AI/ML"
url: https://railway.com/deploy/oE8sWo
---

# Deploy LangChain Apps

Sample LangChain apps for search, text, document, URL, and news summaries.

**[Deploy LangChain Apps on Railway](https://railway.com/template/oE8sWo)**

Machine-readable deploy manifest (JSON, validated by TemplateCI): https://railway.com/deploy/oE8sWo/manifest.json

- **Creator:** alphasec
- **Category:** AI/ML
- **Total deploys:** 246

## Template content

### langchain-text-summary

- **Source:** https://github.com/alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

### langchain-search

- **Source:** https://github.com/alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

### langchain-search-tavily

- **Source:** alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

### langchain-doc-summary

- **Source:** https://github.com/alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

### langchain-news-summary

- **Source:** https://github.com/alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

### langchain-url-summary

- **Source:** https://github.com/alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

### langchain-gemini-chat-pdf

- **Source:** alphasecio/langchain-examples
- **Start command:** `streamlit run streamlit_app.py`
- **Public domain:** Yes

## Documentation

### Template
This template deploys a collection of Streamlit apps that utilize the LangChain framework for interacting with large language models (LLMs).

### Search (langchain-search)
A sample Streamlit web application for live Google search queries using LangChain and SerpApi. Read more below:
* [GitHub repo](https://github.com/alphasecio/langchain-examples/blob/main/search)
* [Google Colab notebook](https://colab.research.google.com/github/alphasecio/langchain-examples/blob/main/search/langchain_search.ipynb)

### Search with Tavily API (langchain-search-tavily)
A sample Streamlit web application for live Google search queries using LangChain and Tavily Search API. Read more below:
* [GitHub repo](https://github.com/alphasecio/langchain-examples/blob/main/search-tavily)

### Text Summary (langchain-text-summary)
A sample Streamlit web application for summarizing text using LangChain and OpenAI. Read more below:
* [Summarize Text with LangChain and OpenAI](https://alphasec.io/summarize-text-with-langchain-and-openai/)
* [GitHub repo](https://github.com/alphasecio/langchain-examples/blob/main/text-summary)
* [Google Colab notebook](https://colab.research.google.com/github/alphasecio/langchain-examples/blob/main/text-summary/langchain_text_summarizer.ipynb)

### Document Summary (langchain-doc-summary)
A sample Streamlit web application for summarizing documents using LangChain and Chroma. Read more below:
* [Summarize Documents with LangChain and Chroma](https://alphasec.io/summarize-documents-with-langchain-and-chroma/)
* [GitHub repo](https://github.com/alphasecio/langchain-examples/blob/main/chroma-summary)
* [Google Colab notebook](https://colab.research.google.com/github/alphasecio/langchain-examples/blob/main/chroma-summary/langchain_doc_summarizer.ipynb)

### URL Summary (langchain-url-summary)
A sample Streamlit application for URL summaries using LangChain and OpenAI. Read more below:
* [GitHub repo](https://github.com/alphasecio/langchain-examples/tree/main/url-summary)

### News Search & Summary (langchain-news-summary)
A sample Streamlit application for Google news search and summaries using LangChain and Serper API. Read more below:
* [Summarize Google News Results with LangChain and Serper API](https://alphasec.io/summarize-google-news-results-with-langchain-and-serper-api)
* [GitHub repo](https://github.com/alphasecio/langchain-examples/tree/main/news-summary)

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