Struggling to send multi-GB files? AltSendme is a free, open-source, cross-platform P2P tool with end-to-end encryption, no accounts, no file size limits, and resume support.
Ever felt frustrated trying to send a few gigabytes of files to a colleague? Cloud drives throttle your upload and download speeds, and the recipient has to register and sign in. It's a hassle. Now, an open-source tool called AltSendme solves this pain point with a peer-to-peer approach, letting you share files effortlessly across devices without any cloud server in the middle.
AltSendme is a minimalist, cross-platform application built for fast, secure, and private peer-to-peer file transfers. It lets you send files or entire folders directly between devices — no cloud servers, no accounts, and no personal information required.
✨ Features: Why Choose AltSendme?
🔄 1. True Peer-to-Peer Transfer
The core advantage of AltSendme is that files are transferred directly between sender and receiver, with zero third-party servers involved. This not only boosts transfer speed but also eliminates the risk of privacy leaks from data sitting in the cloud.
🔒 2. End-to-End Encryption
All communication is protected with end-to-end encryption using modern protocols like QUIC and TLS 1.3, ensuring only you and your recipient can access the file contents. BLAKE3 is also used during transfer to verify data integrity, automatically confirming the file is correct on both ends.
💻 3. Seamless Cross-Platform Support
AltSendme supports Windows, Linux, and macOS, delivering genuine cross-platform file sharing. No matter which device you use, you'll get the same consistent experience.
📊 4. No File Size Limits
Unlike traditional cloud drives or chat tools, AltSendme supports files of any size and format. Whether it's a multi-GB video or an entire folder, it handles the job with ease.
⚡ 5. Resume Support
In unstable network environments, AltSendme's resume capability is especially valuable. If a transfer is interrupted unexpectedly, it automatically picks up from where it left off once the connection is restored — no restart needed.
👤 6. No Account Required
Using AltSendme requires no account registration, sparing you from remembering yet another username and password. It's truly a frictionless file-sharing experience.
📊 Comparison with Similar Tools: AltSendme's Edge
Compared to other file transfer tools on the market, AltSendme excels in several areas:
| Feature | AltSendme | LocalSend | Send Anywhere | LANDrop |
|---|---|---|---|---|
| Transfer Method | P2P | LAN | P2P + Server | LAN |
| Encryption | End-to-End | Depends on LAN security | AES-256 | Optional E2E |
| Cross-Platform | Full Support | Full Support | Full Support | Full Support |
| Transfer Range | LAN or long-distance | LAN only | Supports Internet | LAN only |
| Open Source | Yes | Yes | No | Yes |
| File Size Limit | No explicit limit | Within 10GB | 10GB free tier | No explicit limit |
As the comparison shows, AltSendme stands out in security and privacy protection, while retaining the transparency of open-source software. Although tools like Send Anywhere support internet transfers, AltSendme uses built-in NAT traversal with an encrypted relay fallback, allowing it to reach devices almost anywhere.
🚀 Usage Guide: Three Steps to Lightning-Fast Transfer
AltSendme's design philosophy is simple, secure, and instant, and the workflow is equally intuitive — just three steps:
🖱️ 1. Drag & Drop to Generate a Ticket
Simply drag and drop the file or folder you want to send into the AltSendme window. The app automatically creates a one-time secure share code (called a "ticket"). This happens locally in an instant — the file itself hasn't started transferring yet.
📋 2. Share the Ticket
Copy the generated ticket code and send it to the recipient through any channel you like — instant messengers like WeChat or QQ, email, or even SMS. The ticket itself contains no file data; it's merely a secure access credential.
🚀 3. Receiver Starts the Transfer
The recipient pastes the ticket into their AltSendme app, a secure P2P connection is established instantly, and the file starts flowing directly. The entire process uses end-to-end encryption, ensuring no one other than sender and receiver can access the contents.
🚀 Pro Tips: Get the Most Out of AltSendme
🏎️ Maximize Transfer Speed
AltSendme can saturate multi-gigabit connections for blazing-fast transfers. For best performance:
- Close other applications that may be hogging bandwidth
- Use a wired connection instead of Wi-Fi for large files
🌐 Handling Unstable Networks
AltSendme's resume feature makes it shine in unstable network conditions. Even with frequent disconnections, the file will eventually complete without manual intervention.
📁 Batch Transfer
Beyond single files, AltSendme supports transferring entire directories, which is ideal for backing up or migrating project folders.
🔐 Ensuring Transfer Security
Although AltSendme already provides end-to-end encryption, when handling sensitive files you can also:
- Verify the authenticity of the recipient's device
- Transfer within a secure network environment
- Confirm file integrity on both sender and receiver sides after transfer
💻 Download, Install & Deploy
Installing AltSendme is straightforward — just a few steps:
📥 Download Links
AltSendme is completely free and open source. You can download it directly from the official GitHub repository:
- Official Website: https://www.altsendme.com/
- Direct Download: https://github.com/tonyantony300/alt-sendme/releases
🖥️ Platform-Specific Installation
Windows
- Download the
AltSendme_0.2.4_x64-Win.7zfile - Extract the archive
- Run
AltSendme.exeto get started
macOS
- Download the
AltSendme_0.2.4_x64-macOS.dmgfile - Open the disk image
- Drag AltSendme into the Applications folder
- Launch the app (you may need to authorize it since it comes from a third-party developer)
Linux
- Download the
AltSendme.debpackage - Run in terminal:
sudo dpkg -i AltSendme.deb - Once installed, find AltSendme in your application menu
💎 Conclusion
In an era where data privacy matters more than ever, AltSendme offers a secure, efficient, and free new way to transfer files. 🔐 It breaks down platform barriers, making file sharing across different operating systems simple and intuitive. Whether you're sending documents at work or sharing large files in personal use, AltSendme handles the task with excellence.
Its open-source nature means anyone can audit the code, ensuring no hidden backdoors or privacy risks. The peer-to-peer transfer model not only speeds things up but also maximizes protection of your data.
If you're tired of cloud drive speed limits and privacy concerns, give AltSendme a try and experience a truly autonomous, secure, and efficient way to transfer files.
Note: AltSendme's latest release is version 0.2.4, with major updates including folder-sharing UI fixes and macOS code notarization fixes. The team is actively developing mobile and web platform versions, which will support a broader range of devices in the future.
Note: This is the English translation of the original Chinese version.