ShardLock
Encrypted · Sharded · Delivered

Send files straight to the people you trust — encrypted end to end, split into shards, and delivered peer to peer. Nothing is stored on a server, and nothing is left behind.

Download & install ShardLock Create a free account

Run ShardLock.exe — it installs the app, drops a desktop icon, and keeps itself up to date every time you open it. (If Windows warns, click “More info” → “Run anyway.”) The app needs a free account. Need one? Click here.  ·  Portable ZIP

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End-to-end encrypted

AES-256 with per-transfer keys. Your files are unreadable to anyone but the recipient.

Direct peer to peer

Files move machine to machine. The server only helps your buddies find each other.

No trace

No files on any server, and every temporary shard is wiped the moment a transfer finishes.

Free tier includes 1 GB of transfers per month.
Windows app · installs in a couple of clicks · Download ShardLock  |  Need an account? Click here  |  Won’t connect? Port-forwarding guide