LocalSend：あらゆるデバイスに対応する安全なオフラインファーストファイル共有

LocalSend is a secure, offline-first file transfer solution, purpose-built for professionals, teams, and organizations operating in high-trust, security-critical environments. With over 8 million downloads globally, LocalSend enables fast, encrypted peer-to-peer file sharing — without the cloud, without internet access, and without surveillance. Fully offline operation – transfer files over local Wi-Fi or LAN, no internet required End-to-end TLS encryption – full confidentiality and integrity of your data Cross-platform compatibility – available on iOS, Android, Windows, macOS, and Linux No tracking, no data collection, no ads Open-source & fully transparent – trusted worldwide in defense, critical infrastructure, and secure enterprise environments Designed for use cases where control, privacy, and operational integrity are non-negotiable. Ideal for deployment in corporate networks, mobile field units, temporary infrastructures, and air-gapped or connectivity-constrained environments.