BIShare

Send large files to a phone, another computer, or someone else entirely.
BIShare is free, needs no account, and encrypts everything end to end.

Two ways to send, one app:

On the same Wi-Fi devices find each other by themselves and transfer at
local network speed, with nothing uploaded anywhere. Photos and videos
arrive as the original file: full resolution, metadata intact, no
recompression.

Anywhere else you get a link or a six-character code. The other person
opens it in any browser, on any device, with nothing to install and no
account to make. Up to 100 GB per transfer. Links expire after 24 hours, or
after a single download if you choose.

What you can send:

• Photos and videos, as the original file
• Documents, PDFs, archives, any file type
• A whole folder, sent as a single archive
• Text and clipboard content between your own devices

Privacy by default:

• End-to-end encryption on every transfer (X25519 + AES-256-GCM)
• Files are encrypted before upload; the key stays in the link and never

reaches the relay

• Local transfers never leave your network
• No account, no sign-up, no tracking

More:

• Transfer rooms: several people share into one code, in a meeting or a class
• An interrupted transfer resumes instead of starting over
• QR Beam: with no network at all, one screen plays animated QR codes and

another device's camera reads them

• Works with Android, iPhone, iPad, Mac and Windows, in any direction
• Free and open source under the MIT licence