量信 vs Link2Send

量信是以密码技术为核心的企业加密通讯与安全协同办公平台。构建以“用密码定义边界”为宗旨的数据安全防护体系，保障企业数据从产生、传输、存储、分类、共享、销毁全生命周期的数据安全。集成密话、密信、密会、密视频、密线、密文、密盘、密友通讯录等八大加密应用，结合零信任、数据防泄漏、安全沙箱等多种安全技术，对企业通讯和办公场景下的云、管、端数据进行全程加密保护。

Link2Send is a peer-to-peer file transfer tool for devices on the same Wi-Fi network. No cloud servers. No accounts. No internet required. Files travel directly between your devices with TLS end-to-end encryption. — Cross-platform — Works seamlessly between iPhone, iPad, Mac, Windows, Linux and Android. Send a screenshot from your laptop and it lands on your iPhone in seconds. — Privacy by design — • No telemetry, no analytics, no ad SDKs • Self-signed certificates, fingerprint-pinned trust • Files never leave your local network — Built for everyday transfer — • Drag-and-drop or pick from gallery • Resume interrupted transfers • Send multiple files in one shot • Browse received files in the iOS Files app • 2 MB chunked transfer for fast and reliable delivery — Discover devices instantly — Link2Send announces itself on your LAN via multicast and pairs in one tap. Once paired, devices remember each other across restarts. Privacy: https://link2send.com/en/privacy