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# Overview
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Khoj supports a variety of features, including search and chat with a wide range of data sources and interfaces.
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#### [Search](/features/search)
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- **Local**: Your personal data stays local. All search and indexing is done on your machine when you [self-host ](/get-started/setup )
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- **Incremental**: Incremental search for a fast, search-as-you-type experience
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#### [Chat](/features/chat)
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- **Faster answers**: Find answers faster, smoother than search. No need to manually scan through your notes to find answers.
- **Iterative discovery**: Iteratively explore and (re-)discover your notes
- **Assisted creativity**: Smoothly weave across answers retrieval and content generation
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- **Works online or offline**: Chat using online or offline AI chat models
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#### General
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- **Cloud or Self-Host**: Use [cloud ](https://app.khoj.dev/login ) to use Khoj anytime from anywhere or [self-host ](/get-started/setup ) for privacy
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- **Natural**: Advanced natural language understanding using Transformer based ML Models
- **Pluggable**: Modular architecture makes it easy to plug in new data sources, frontends and ML models
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- **Multiple Sources**: Index your Org-mode, Markdown, PDF, plaintext files, Github repos and Notion pages
- **Multiple Interfaces**: Interact from your Web Browser, Emacs, Obsidian, Desktop app or even Whatsapp
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### Supported Interfaces
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Khoj is available as a [Desktop app ](/clients/desktop ), [Emacs package ](/clients/emacs ), [Obsidian plugin ](/clients/obsidian ), [Web app ](/clients/web ) and a [Whatsapp AI ](https://khoj.dev/whatsapp ).
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![](/img/khoj_clients.svg ':size=400px')
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### Supported Data Sources
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Khoj can understand your org-mode, markdown, PDF, plaintext files, [Github projects ](/online-data-sources/github_integration ) and [Notion pages ](/online-data-sources/notion_integration ).
![](/img/khoj_datasources.svg ':size=200px')