A free and open-source file transfer tool that harnesses the power of [cutting-edge peer-to-peer networking](https://www.iroh.computer), letting you transfer files directly without storing them on cloud servers.
Why rely on WeTransfer, Dropbox, or Google Drive when you can reliably and easily transfer files directly, end-to-end encrypted and without revealing any personal information?
Join our [Discord](https://discord.gg/xwb7z22Eve) to contribute
## Features
- **Send anywhere** – Works seamlessly on local networks or across continents.
- [**Transfer anything**](https://www.iroh.computer/proto/iroh-blobs) – Send files or directories of any size or any format, verified with BLAKE3-based integrity checks.
- **No accounts or personal info** – Transfer files without sign-ups or exposing personal info.
- **Peer-to-peer direct transfer** – Send files straight between devices, with no cloud storage in between.
- **Authentication** - Tickets contains cryptographic identity info for authentication.
- **End-to-end encryption** – Always-on protection with QUIC + TLS 1.3 for forward and backward secrecy.
- **Resumable transfers** – Interrupted downloads automatically resume where they left off.
- **Broadcast** - Share same file/folder with any number of peers.
- **Preview** - View and verify before downloading
- **Fast & reliable** – Capable of saturating multi-gigabit connections for lightning-fast transfers.
- [**NAT traversal via QUIC**](https://www.iroh.computer/docs/faq#does-iroh-use-relay-servers) – Secure, low-latency connections using QUIC hole punching with encrypted relay fallback.
- **CLI integration** – Interoperable with the [Sendme CLI](https://www.iroh.computer/sendme).
- **Free & open source** – No upload costs, no size limits, and fully community-driven.
- **Coming Soon** – Mobile and Web versions
## Installation
The easiest way to get started is by downloading one of the following versions for your respective operating system:
**Windows (Scoop)**
```bash
scoop bucket add extras
scoop install extras/altsendme
```
More download options in [GitHub Releases](https://github.com/tonyantony300/alt-sendme/releases).
## Partners
We're looking for Partners to join our mission! Partner with us and support while we push the boundaries of peer-to-peer file transfer.
[**LET'S CHAT**](https://www.altsendme.com/en/contact)
## Supported Languages
🇺🇸 🇷🇺 🇫🇷 🇨🇳 🇩🇪 🇯🇵 🇮🇳 🇹🇭 🇮🇹 🇨🇿 🇪🇸 🇧🇷 🇸🇦 🇮🇷 🇰🇷 🇵🇱 🇺🇦 🇹🇷 🇳🇴 🇧🇩 🇭🇺 🇷🇸 🇹🇼 🇰🇭
## How it works
1. Drop your file or folder - AltSendme creates a one-time share code (called a "ticket").
2. Share the ticket via chat, email, or text.
3. Your friend pastes the ticket in their app, and the transfer begins.
## Under the hood ⚙️🛠️
AltSendme uses [Iroh](https://www.iroh.computer) under the hood to enable peer-to-peer file transfer. It is a modern modular alternative to technologies like WebRTC and libp2p.
### Important concepts
- *Blobs*
- *Tickets*
- *Peer Discovery*, *Hole-punching* & *NAT traversal*
- *QUIC* & *End-to-end encryption*
- *Relays*
### 1. Blobs
Content-addressed blob storage and transfer. `iroh-blobs` implements request/response and streaming transfers of arbitrary-sized byte blobs, using BLAKE3-verified streams and content-addressed links.
- Blob: an opaque sequence of bytes (no embedded metadata).
- Link: a 32-byte BLAKE3 hash that identifies a blob.
- HashSeq: a blob that contains a sequence of links (useful for chunking/trees).
- Provider / Requester: provider serves data; requester fetches it. An endpoint can be both.
### 2. Tickets
Tickets are a way to share dialing information between iroh endpoints. They're a single token that contains everything needed to connect to another endpoint, or to fetch a blob in this case. Contains Ed25519 NodeIds: Your device's cryptographic identity for authentication.They're also very powerful. It's worth pointing out this setup is considerably better than full peer-2-peer systems, which broadcast your IP to peers. Instead in iroh, tickets are used to form a "cozy network" between peers you explicitly want to connect with. It's possible to go "full p2p" & configure your app to broadcast dialing details, but tickets represent a better middle-ground default.
### 3. Peer Discovery, NAT Traversal & Hole Punching
Peers register with an open-source public relay servers at startup to help traverse firewalls and NATs, enabling connection setup. Once connected, Iroh uses QUIC hole punching to try and establish a direct peer-to-peer connection, bypassing the relay. If direct connection is possible, communication happens directly between peers with end-to-end encryption; otherwise, the relay operates only temporarily as a fallback. This enables smooth reliable connections between peers within local-network and across the internet.
### 4. QUIC & Encryption
QUIC is a modern transport protocol built on UDP, designed to reduce latency and improve web performance over TCP. Developed originally by Google and now standardized by the IETF as HTTP/3's foundation, it integrates TLS 1.3 encryption directly into the protocol.
QUIC allows following super-powers:
* encryption & authentication
* stream multiplexing
* no head-of-line blocking issues
* stream priorities
* one shared congestion controller
* an encrypted, unreliable datagram transport
* zero round trip time connection establishment if you've connected to another endpoint before
### 5. Relays
AltSendme uses open-source public relay servers to support establishing direct connections, to speed up initial connection times, and to provide a fallback should direct connections between two endpoints fail or be impossible otherwise. All connections are end-to-end encrypted. The relay is “just another UDP socket” for sending encrypted packets around. [Read more.](https://docs.iroh.computer/about/faq)
## Roadmap 🚧
- Cross-platform Mobile versions
- Phrase-based Addressing via Iroh-gossip and PAKE
- Unthrottled, Reliable transfers with fully self-hosted relays
- Web version (Send and receive from browser)
- Better system/network insights into transfer process
[📫 Drop your Email to recieve updates](https://tally.so/r/ob2Vkx)
## Development Setup
### Prerequisites
- Rust 1.91+
- Node.js 18+
- npm or yarn
### Getting Started
1. **Fork and clone the repository**:
```bash
git clone https://github.com/your-username/alt-sendme.git
cd alt-sendme
```
2. **Install frontend dependencies**:
```bash
npm install
```
3. **Install Tauri**:
```bash
cargo install tauri-cli
```
4. **Run in development mode**:
```bash
cargo tauri dev
```
5. **(Optional) Setup android project**:
```bash
rm src-tauri/gen/android
cargo tauri android init
git checkout src-tauri/gen/android
cargo tauri android dev
```
6. **Build locally** :
```bash
cargo tauri build --no-bundle
```
7. **Install on Android** :
```
npm run android:build -- --debug --apk
adb install -r src-tauri/gen/android/app/build/outputs/apk/universal/debug/app-universal-debug.apk
```
## Testing Locally
Install [Sendme CLI](https://www.iroh.computer/sendme) tool and you can share files within same device to test the whole transfer process. Files don't leave your device it works like a copy operation.
## Join our [Discord](https://discord.gg/xwb7z22Eve) to contribute
The best way to contribute is to join our Discord and say hi. Introduce yourself and share what skills or interests you have - whether that’s coding, testing, design, or something else. You can also raise issues, suggest fixes, or pitch ideas. Maintainers are there to guide you every step of the way.
It’s the best place to get context, align on direction, and collaborate with the [community](https://discord.gg/xwb7z22Eve).
## License
AGPL-3.0
## Privacy Policy
See [PRIVACY.md](PRIVACY.md) for information about how AltSendme handles your data and privacy.
[](https://github.com/sponsors/tonyantony300) [](https://buymeacoffee.com/tny_antny)
## Contributors
## Contact
Reach me [here](https://www.altsendme.com/en/contact) for suggestions, feedback or media related communication.
Thank you for checking out this project! If you find it useful, consider giving it a star and helping spread the word.
## Built on
