Launching today
TransmitFlow
Instant file transfer — no upload, no cloud, no account
16 followers
Instant file transfer — no upload, no cloud, no account
16 followers
TransmitFlow is an open-source way to send files directly between devices in your browser—no account and no cloud upload step. Pair with QR code or room code, then transfer instantly with WebRTC and automatic fallback on restrictive networks. Built for reliability with adaptive chunking, missing-chunk recovery, SHA-256 integrity checks, and clear retry states. Works on desktop and mobile.
Hey Product Hunt! I’m Shubham, maker of TransmitFlow 👋
There are tons of file-sharing tools — but most still rely on uploads, accounts, or slow setup.
I built TransmitFlow for one simple use case:
→ open → pair → send instantly
No login. No upload. Files go directly device-to-device.
What I focused on:
• Fast pairing (QR + room code)
• Works on restrictive networks (STUN/TURN fallback)
• Reliable large file transfer (chunking + recovery + integrity checks)
• Clear retry flows instead of vague errors
Would love honest feedback:
– Did pairing feel instant?
– Did it work on your network?
– What felt slow or confusing?
Appreciate you checking it out 🙏
Really like the idea of skipping uploads completely.
Quick question — how does it behave if the connection drops mid-transfer? Does it resume or restart?
@samir_ubhare Thank you so much! We really love the efficiency of skipping the cloud-storage middleman too. 🙌
To answer your question: right now, if the connection completely drops mid-transfer, the transfer will restart. However, because we are already transferring files in smaller chunks under the hood, building true "auto-resume" for interrupted transfers is actually our #1 priority on the roadmap right now!
Since we just made the project fully open-source (MIT), we're excited to iterate on the WebRTC retry logic over the next few weeks. Would love to hear any other feedback you have if you get a chance to try it out!
ui is super clean. love that it's open source too, gonna dig through the repo later.
How you got the idea about this project?
@kedarnath_mane Thanks so much! We actually just switched it to an MIT license, so definitely let me know what you think when you look under the hood.
As for the idea—honestly, it came from pure frustration. I was constantly 'emailing files to myself' or using WhatsApp saved messages just to get a quick video from my phone to my laptop. AirDrop is amazing, but the second you try to send something to a Windows PC or Android phone, it's a pain. I wanted a tool that worked instantly on any device just by opening a browser tab. That led me down the WebRTC rabbit hole, and here we are! 😂
Been looking for an airdrop alternative for android to windows for ages. works surprisingly well so far 👏
@niharpatil_021 thanks! yeah that was the exact reason i built it. dealing with cables or emailing myself files was driving me crazy lol. glad it's helpful!