CrossPaste

CrossPaste is an open-source alternative to proprietary clipboard managers like Paste or MagicCopy that synchronizes clipboard content across multiple devices. It allows users to copy data on one machine and paste it on another, supporting a variety of content types beyond simple text. The application is available as a desktop client for Mac, Windows, and Linux, providing a unified interface that remains consistent regardless of the operating system.

The software operates using a serverless architecture that relies on the local area network for data transfer rather than a centralized cloud. It includes a companion Chrome extension that integrates the browser into the synchronization mesh, allowing users to copy web content on one device and paste it on any other connected device. This setup ensures that data remains within the user's own network environment.

Key features

• Real-time sharing of pasteboard content across connected devices
• Support for text, color, URL, HTML, RTF, images, and files
• End-to-end asymmetric encryption for data security
• LAN-only serverless architecture for local storage and privacy
• Local OCR for extracting text from images without network calls
• Automatic cleanup options for pasteboard storage management
• MCP Server integration to expose history to AI assistants
• Chrome extension for browser-based clipboard synchronization

Built with Kotlin Multiplatform, the application is designed for users who require a private way to move assets between workstations without relying on third-party cloud intermediaries. The integration of the Model Context Protocol (MCP) is a specific addition that allows the clipboard history to be accessed by external AI assistants such as Claude. The local OCR capability further enhances utility by allowing users to convert screenshots into editable text without sending data to an external server.

CrossPaste positions itself as a privacy-focused utility for cross-platform workflow synchronization, emphasizing local control and data encryption.