Open Source | AGPL 3.0

Fastest file transfer experience on this planet

Direct, encrypted file transfers from your devices to anyone, anywhere - no accounts, no cloud storage in between.

Think of it like AirDrop for any device, any network.

AltSendMe app demo

Free, for files & folders of any size

AltSendme works by connecting sender and receiver directly, so there's no need to upload to a server, which means your transfers are truly private.

Fast

AltSendme can saturate a 4Gbps connection.

Resumable fetching

Interrupted downloads pick up where they left off.

Integrity checks

Data is automatically verified for correctness on both send and receive.

Secure & Instant. Works in 3 simple steps.

1. Drop a file or folder

AltSendme creates a secure one-time code (called a "ticket") for your file

2. Share the ticket

Copy ticket and send it via chat, email, or text to your recipient friend

3. They receive file

Your friend pastes the ticket in their app, and the transfer begins. file downloads directly.

Why People Love AltSendmeFor Everyday File Sharing

Send files directly. No middlemen.

Works seamlessly on local networks or across continents.

Transfer Anything. Any file. Any Format.

Send files or directories of any size or any format, verified with BLAKE3-based integrity checks.

No Size Limits. Truly unlimited.

Send KB's to 99GB's. Altsendme helps you to share files of unlimited size.

Blazing Fast & Reliable

Capable of saturating multi-gigabit connections for lightning-fast transfers.

End-to-End Encrypted

Protected by QUIC + TLS 1.3 for forward and backward secrecy.

Resumable Transfers

Interrupted? No problem. Transfers automatically resume where they left off.

Zero Personal Data

No accounts, No ads. No tracking, No training. Just private file transfers.

Free & OpenSource

Built by community. Open by Design. Transparency and private by default.

Partners

TestMu AI, formerly LambdaTest

Interested in Partnership?

We're always looking for organizations that want to collaborate and support open-source development.

Built To Outlive Us.

Open Source & Community Driven

AltSendme is built in public by contributors around the world. Every line of code is public. Every improvement is shared. Together, we're building a faster, more private way to send files directly between people.

8.2k stars

Join our Community

+ 65 Others

Open source is our way of giving back to the community and making sure what we're building outlives us.

Interact with us directly, suggest features, report bugs, get updates early, and help shape the future of file sharing.

Join us on Discord

Frequently Asked Questions

Send files anywhere | Frictionless, Fast, Private, Unlimited and Free