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https://github.com/justcodeit7/streamlit_apps

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https://github.com/justcodeit7/streamlit_apps

langchain ollama python streamlit

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# Streamlit Apps Collection



This repository contains a collection of Streamlit applications demonstrating various AI, data science, and utility functionalities. Each application showcases different capabilities including web content processing, machine learning, computer vision, natural language processing, and more.



## Prerequisites



- Python 3.x

- Streamlit: `pip install streamlit`

- Other dependencies as listed in each app's folder or requirements.txt if present.

- Some apps require OpenAI API keys for full functionality (especially LangChain versions)



## Quick Start



To run any app:

```bash

cd 

streamlit run .py

```



## Apps Overview



### 1. WebPage Chat (`01-WebPage_Chat/`)



A Streamlit application that loads web page content and enables users to chat with the loaded content.



**Features:**

- Fetches and processes web page content via HTTP requests

- Extracts text from HTML using BeautifulSoup

- Conversational interface for Q&A about page content



**To run:** `cd 01-WebPage_Chat && streamlit run 01_webpage_chat.py`



---



### 2. WebPage Chat (LangChain) (`01-WebPage_Chat_Langchain/`)



LangChain-based version of the webpage chat app with advanced document processing.



**Features:**

- Uses LangChain for text splitting and processing

- Vector storage using ChromaDB for semantic search

- Multiple versions available (v3, copy variants)

- Enhanced embeddings support



**To run:** `cd 01-WebPage_Chat_Langchain && streamlit run 01_webpage_chat.py`



---



### 3. Website Crawl Chat (`02-Website_Crawl_Chat/`)



Application that crawls websites and allows chatting about the content.



**Features:**

- Multi-page web crawling capabilities

- Content extraction from multiple pages

- Conversational Q&A interface



**To run:** `cd 02-Website_Crawl_Chat && streamlit run webpage_crawl_chat.py`



---



### 4. Website Crawl Chat (LangChain) (`02-Website_Crawl_Chat_Langchain/`)



LangChain version of website crawl chat with advanced document processing.



**Features:**

- LangChain integration for document processing

- Vector embeddings for semantic search

- Multi-page crawling with depth control



**To run:** `cd 02-Website_Crawl_Chat_Langchain && streamlit run 02_website_chat.py`



---



### 5. Stock Trading Algorithm Evaluator (`17-Streamlit_Stock_App/`)



Evaluates stock trading algorithms using yfinance and plotly.



**Features:**

- Real-time and historical stock data

- Interactive charts with Plotly

- Technical analysis indicators

- News integration for market context



**To run:** `cd 17-Streamlit_Stock_App && streamlit run stock_app.py`



---



### 6. Image Recognition App (`18-Image_Rec_App/`)



Recognizes objects in images using deep learning models.



**Features:**

- Pre-trained MobileNetV2 model for image classification

- Confidence scores for predictions

- Supports multiple image formats (JPEG, PNG, BMP, GIF)



**To run:** `cd 18-Image_Rec_App && streamlit run app.py`



---



### 7. News Aggregator Summarizer Chat (`News_Aggregator_Summarizer_Chat/`)



Aggregates news from various sources, summarizes content using AI, and provides chat functionality.



**Features:**

- Multi-source news aggregation

- AI-powered article summarization

- Sentiment analysis on articles

- Category-based filtering



**To run:** `cd News_Aggregator_Summarizer_Chat && streamlit run main.py`



---



### 8. Speech-to-Text Transcriber (`Speech_to_Text_Transcriber/`)



Transcribes speech audio to text using automatic speech recognition.



**Features:**

- Supports multiple audio formats (MP3, WAV, M4A, FLAC, OGG)

- Fast transcription processing

- Language selection support



**To run:** `cd Speech_to_Text_Transcriber && streamlit run stt.py`



---



### 9. Codebase Chat (`Streamlit_Codebase_Chat/`)



Chatbot for analyzing and discussing codebases.



**Features:**

- Code analysis capabilities

- Interactive chat interface

- Code understanding and explanation



**To run:** `cd Streamlit_Codebase_Chat && streamlit run main.py`



---



### 10. Facial Recognition App (`Streamlit_Face_Rec/`)



Recognizes faces in images using face recognition libraries.



**Features:**

- Face detection and recognition

- Known face database management

- Real-time face matching



**To run:** `cd Streamlit_Face_Rec && streamlit run app.py`



---



### 11. Object Detection App (`Streamlit_Object_Detection/`)



Detects objects using YOLO (You Only Look Once) deep learning model.



**Features:**

- Real-time object detection

- Multiple object class recognition

- Bounding box visualization



**To run:** `cd Streamlit_Object_Detection && streamlit run app.py`



---



### 12. Sentiment Analysis Dashboard (`Streamlit_Sentiment_Dashboard/`)



Dashboard for analyzing sentiment in text.



**Features:**

- Text sentiment classification

- Visual analytics dashboard

- Multiple analysis metrics



**To run:** `cd Streamlit_Sentiment_Dashboard && streamlit run sentiment_dashboard.py`



---



### 13. Stock Prediction App (`Streamlit_Stock_Pred/`)



Predicts stock prices using machine learning models.



**Features:**

- Time series forecasting

- ML-based price predictions

- Historical trend analysis



**To run:** `cd Streamlit_Stock_Pred && streamlit run stock_app.py`



---



### 14. Web Chat App (`Streamlit_Web_Chat/`)



General chat application for web content interaction.



**Features:**

- Interactive chat interface

- Web content processing



**To run:** `cd Streamlit_Web_Chat && streamlit run app.py`



---



### 15. TODO List App (`TODO_List_App/`)



Simple todo list application with task management.



**Features:**

- Add, complete, and delete tasks

- Persistent storage of tasks

- Simple and intuitive interface



**To run:** `cd TODO_List_App && streamlit run todo_app.py`



---



### 16. Web Search Chat Bot (`Web_Search_Chat/`)



Chatbot that performs web searches using DuckDuckGo.



**Features:**

- Internet search capabilities

- AI-powered result summarization

- Conversational interface



**To run:** `cd Web_Search_Chat && streamlit run web_bot.py`



---



## Common Dependencies



The following packages are commonly used across multiple apps:

- `streamlit` - Web application framework

- `requests` - HTTP library for web requests

- `beautifulsoup4` - HTML parsing

- `openai` - OpenAI API integration (for LangChain versions)

- `langchain` - LLM framework for advanced processing

- `chromadb` - Vector database for embeddings

- `yfinance` - Yahoo Finance data

- `plotly` - Interactive visualizations



## Environment Variables



Some apps require environment variables to be set:

- `OPENAI_API_KEY` - Required for LangChain-based applications and AI features



## License



See the LICENSE file in the project root directory.