What is AlterSend used for?

AlterSend is a free, open-source app for sending files directly between devices with peer-to-peer end-to-end encryption, no accounts, and no cloud storage or size limits. It is a good fit for sending large files without cloud uploads and private transfers between your own devices.

Is AlterSend open source?

Yes. AlterSend is open source under a custom licence. Its source code is on GitHub at denislupookov/altersend and is written mainly in TypeScript.

Yes. AlterSend is open source, so the software itself is free to use under the terms of its own licence.

Can I self-host AlterSend?

Yes. AlterSend can be self-hosted on your own server or infrastructure.

What is AlterSend an alternative to?

AlterSend is an open-source alternative to WeTransfer and Send Anywhere. Other open-source alternatives to WeTransfer include AirDash, Filedrop and croc.

Is AlterSend actively maintained?

Yes. The most recent commit to AlterSend was on 1 October 2026, and the latest release is v2.0.0, published on 21 August 2026. The project has 1.8k stars on GitHub.

AlterSend: open-source alternative to WeTransfer

About AlterSend

AlterSend is an app for transferring files directly between your devices over the internet. Files go peer to peer with end-to-end encryption, with no cloud storage, no uploads, no accounts, and no size limit. The README frames it as a replacement for WeTransfer, Dropbox, or Google Drive links when you only want to move a file from one device to another. The input lists its license only as other.

It uses techniques such as hole punching to connect devices behind routers. Installers are provided, including Homebrew for macOS and Flatpak for Linux, and the repository has sections on how it works, development setup, internationalization, the tech stack, crash reporting, and security. It is written in TypeScript and was created in 2026.

AlterSend suits people who regularly share large files, such as video or backups, and want privacy without relying on a cloud intermediary. Both devices generally need to be online at the same time for a transfer.

Key features

Direct device-to-device file transfer
End-to-end encryption
No accounts and nothing stored
No file size limit
NAT hole punching
Homebrew and Flatpak installation

Good fit for

→Sending large files without cloud uploads
→Private transfers between your own devices

Built with: TypeScript
Tags: file-transfer; p2p; privacy; end-to-end-encryption; file-sharing; cross-platform; hole-punching; typescript

AlterSend: questions and answers

What is AlterSend used for?: AlterSend is a free, open-source app for sending files directly between devices with peer-to-peer end-to-end encryption, no accounts, and no cloud storage or size limits. It is a good fit for sending large files without cloud uploads and private transfers between your own devices.
Is AlterSend open source?: Yes. AlterSend is open source under a custom licence. Its source code is on GitHub at denislupookov/altersend and is written mainly in TypeScript.
Is AlterSend free?: Yes. AlterSend is open source, so the software itself is free to use under the terms of its own licence.
Can I self-host AlterSend?: Yes. AlterSend can be self-hosted on your own server or infrastructure.
What is AlterSend an alternative to?: AlterSend is an open-source alternative to WeTransfer and Send Anywhere. Other open-source alternatives to WeTransfer include AirDash, Filedrop and croc.
Is AlterSend actively maintained?: Yes. The most recent commit to AlterSend was on 1 October 2026, and the latest release is v2.0.0, published on 21 August 2026. The project has 1.8k stars on GitHub.