docs: add ChatFrame client details and features to the overview (modelcontextprotocol#1630)

* docs: add ChatFrame client details and features to the overview

* fix: format key features list for improved readability

Author: razertory

docs/clients.mdx

@@ -26,6 +26,7 @@ This page provides an overview of applications that support the Model Context Pr
 | [BoltAI][BoltAI]                                 | ❌          | ❌        | ✅      | ❓                     | ❌         | ❌    | ❓            |
 | [Call Chirp][Call Chirp]                         | ❌          | ✅        | ✅      | ❌                     | ❌         | ❌    | ❓            |
 | [Chatbox][Chatbox]                               | ❌          | ❌        | ✅      | ❌                     | ❌         | ❌    | ❌            |
+| [ChatFrame][ChatFrame]                           | ❌          | ❌        | ✅      | ❌                     | ❌         | ❌    | ❌            |
 | [ChatGPT][ChatGPT]                               | ❌          | ❌        | ✅      | ❌                     | ❌         | ❌    | ❓            |
 | [ChatWise][ChatWise]                             | ❌          | ❌        | ✅      | ❌                     | ❌         | ❌    | ❓            |
 | [Claude.ai][Claude.ai]                           | ✅          | ✅        | ✅      | ❌                     | ❌         | ❌    | ❓            |
@@ -126,6 +127,7 @@ This page provides an overview of applications that support the Model Context Pr
 [BoltAI]: https://boltai.com
 [Call Chirp]: https://www.call-chirp.com
 [Chatbox]: https://chatboxai.app
+[ChatFrame]: https://chatframe.co
 [ChatGPT]: https://chatgpt.com
 [ChatWise]: https://chatwise.app
 [Claude.ai]: https://claude.ai
@@ -371,6 +373,17 @@ Chatbox is a better UI and desktop app for ChatGPT, Claude, and other LLMs, avai
 - Support both local and remote MCP servers
 - Built-in MCP servers marketplace
 
+### ChatFrame
+
+A cross-platform desktop chatbot that unifies access to multiple AI language models, supports custom tool integration via MCP servers, and enables RAG conversations with your local files—all in a single, polished app for macOS and Windows.
+
+**Key features:**
+
+- Unified access to top LLM providers (OpenAI, Anthropic, DeepSeek, xAI, and more) in one interface
+- Built-in retrieval-augmented generation (RAG) for instant, private search across your PDFs, text, and code files
+- Plug-in system for custom tools via Model Context Protocol (MCP) servers
+- Multimodal chat: supports images, text, and live interactive artifacts
+
 ### ChatGPT
 
 ChatGPT is OpenAI's AI assistant that provides MCP support for remote servers to conduct deep research.