AltSendMe

AltSendMe is a cross-platform desktop application for peer-to-peer file transfer that uses Iroh to send files and directories over the Internet. It does not require user accounts and performs direct transfers between sender and receiver. All traffic between endpoints has end-to-end encryption using QUIC + TLS 1.3. Unlimited, fast, free transfer. Share files with complete control and privacy. Optional interoperability with the Sendme CLI tool.

★★★★★

5.0(1 ratings)

• Serverless transfer. Communication is established directly between the sender's and receiver's devices without intermediaries. Files are not stored on external servers during the transfer process. The peer-to-peer architecture eliminates dependencies on centralized services.
• End-to-end encryption. Implementation of QUIC + TLS 1.3 to protect all transmitted data. Encryption is applied before the information leaves the sender's device and remains until it reaches the receiver. Cryptographic security ensures confidentiality during transmission.
• Cross-platform compatibility. Native execution on Windows, macOS, and Linux operating systems. The application is distributed as a compiled binary specifically for each platform. The interface maintains functional consistency across different desktop environments.
• Automatic NAT traversal. Iroh manages NAT traversal without manual user configuration. The system automatically detects network restrictions and applies direct connection establishment techniques. When a direct connection is not possible, it uses relay as an alternative.
• Data integrity verification. Verified streaming with Blake3 during transfer. The algorithm calculates hashes in real-time for comparison with the expected value. Validation occurs during the reception of each data segment.
• Resumable downloads. Ability to continue interrupted transfers from the point of failure. The system maintains a record of download progress and verifies received segments. Resumption requires no user intervention beyond the request to continue.
• Cryptographic identifiers. Use of 256-bit node IDs for device identification. Identifiers are generated using cryptographic functions and are unique to each instance. This system prevents conflicts and impersonation on the network.
• React interface. Graphical interface development using React technology and modern web components. The interface architecture separates the presentation logic from the transfer core. Dynamic real-time updates of transfer status.
• CLI compatibility. Joint operation with the Sendme command-line tool. The same protocols and data formats allow interoperability between interfaces. CLI users can exchange files with graphical interface users.
• Directory transfer. Sending complete folder structures preserving the hierarchy. The application recursively processes all files contained in selected directories. Structure metadata is packaged along with the content.
• Minimal configuration. Operation with default settings covering most use cases. The application automatically detects network configurations and adjusts parameters. Interaction reduced to file selection and connection code exchange.
• Unlimited transfer. Absence of restrictions on file size or total data volume. The peer-to-peer architecture imposes no artificial limits on transfers. Performance primarily depends on the bandwidth available between devices.

The development of AltSendMe began in 2023 as a graphical interface implementation for Iroh technology. Tony Antony created the project to provide a visual alternative to existing command-line tools. The application is built primarily with TypeScript using the Electron framework for the desktop component. The integration with Iroh is implemented through specific bindings that expose the network functionality. Development continues with the addition of features while maintaining compatibility with the Sendme ecosystem.

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