Platform feature docs revamp (#3007)

docs/open-source/overview.mdx

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+---
+title: Overview
+icon: "eye"
+iconType: "solid"
+---
+
+<Snippet file="paper-release.mdx" />
+
+Welcome to Mem0 Open Source - a powerful, self-hosted memory management solution for AI agents and assistants. With Mem0 OSS, you get full control over your infrastructure while maintaining complete customization flexibility.
+
+We offer two SDKs for Python and Node.js.
+
+Check out our [GitHub repository](https://mem0.dev/gd) to explore the source code.
+
+<CardGroup cols={2}>
+<Card title="Python SDK Guide" icon="python" href="/open-source/python-quickstart">
+  Learn more about Mem0 OSS Python SDK
+</Card>
+<Card title="Node.js SDK Guide" icon="node" href="/open-source/node-quickstart">
+  Learn more about Mem0 OSS Node.js SDK
+</Card>
+</CardGroup>
+
+## Key Features
+
+- **Full Infrastructure Control**: Host Mem0 on your own servers
+- **Customizable Implementation**: Modify and extend functionality as needed
+- **Local Development**: Perfect for development and testing
+- **No Vendor Lock-in**: Own your data and infrastructure
+- **Community Driven**: Benefit from and contribute to community improvements