Zynk, a Fast, P2P Encrypted File Transfers and Messaging Across Devices
Hi HN, I’m Marc, founder of Zynk, an application being built by a small bootstrapped team. Zynk is a cross‑platform file transfer + messaging app designed around two things: reliability (auto‑resume) and privacy (end‑to‑end encryption). The project started because I felt it's still a pain to move files and folders across a Linux laptops, a Mac workstation, my phone, countless other devices, and to others. Some existing solutions don't cross ecosystems, cloud drives are slow/inefficient/fragile for big transfers, and a lot of tools fall over when you sleep a laptop or switch…
In plain words
Zynk is a cross-platform file transfer and messaging application that enables direct peer-to-peer transfers between devices and users with automatic resume capability if connections drop. It uses end-to-end encryption for privacy and works across Linux, Mac, and mobile ecosystems without relying on cloud storage. The application is designed for users who need to move large files and folders between multiple personal devices or share with others while maintaining connection stability even when devices sleep or switch networks.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hi HN, I’m Marc, founder of Zynk, an application being built by a small bootstrapped team. Zynk is a cross‑platform file transfer + messaging app designed around two things: reliability (auto‑resume) and privacy (end‑to‑end encryption). The project started because I felt it's still a pain to move files and folders across a Linux laptops, a Mac workstation, my phone, countless other devices, and to others. Some existing solutions don't cross ecosystems, cloud drives are slow/inefficient/fragile for big transfers, and a lot of tools fall over when you sleep a laptop or switch networks. Most don't preserve privacy fully either. What’s different / core features: - Direct device‑to‑device transfers (files + folders) of unlimited size with auto‑resume when a connection drops, also between users, rsync style - P2P first; if devices can’t connect directly after attempting to hole-punch through NATs/firewalls, we fall back to a cloud relay, but still maintaining E2EE - UI app for macOS, Windows, Linux, iOS, Android (incl. Android TV), Steam Deck - CLI for macOS/Windows/Linux/RPi/FreeBSD for scripting and servers - Web Drops / Share Links to share or request files with people who don’t have Zynk installed (limits depend on plan) There’s a lot of depth to the product beyond this, and details that together make a difference. It would be too much to list, I hope you’ll discover them through use and love it as much as we do. Pricing/limits (so it’s clear up front): personal use is completely free; the free plan includes unlimited direct P2P transfers, with generous monthly caps on relay, and size/expiry limits on Web Drop links; Pro increases those caps. It doesn't end here; we're obsessed about quality, efficiency, ease of use and utility and we're working hard on improving this and taking it to the max. There's a long road ahead with some pretty exciting new capabilities coming up soon. Try it out, send files and media between your own devices and other people. I’d love feedback on: 1. Onboarding and any friction points (what’s confusing / annoying?) 2. Reliability in your real-world network setup (esp. NAT/CGNAT) 3. What you’d want from the CLI/UI/workflows 4. Anything else we can improve and make better Thanks! I’ll be here answering questions. https://zynk.it/
Does the same job
all alternatives →
- IBI built a website to share files and messages without any server2024 · neighbor-share.vercel.app · ▲132
NeighborHoodShare: It is a p2p files and messages sharing platform without involvement of any server. It has end-to-end encryption, ensuring your messages and files remain confidential. These are some features: - Share photos, documents, videos, and more with ease, no matter the size. - Connect instantly with anyone for speedy and reliable file transfers, bypassing the need for centralized servers. - Get started in minutes with our intuitive interface designed for seamless communication. No registration. - Easily connect with others using QR codes, simplifying the sharing process further.…
More work this month
the category →
The app store for voice native apps that lives in your notch
Work · 28d ago · voiceos.com
Mac-native app for screenshots, recordings and collaboration
Work · 5d ago · cleanshot.com
Launched alongside, December 2025
the whole month →- GP
Life & fun · Dec 2025 · dosaygo-studio.github.io
- JG
Hi everyone! My name's Luke and I made the original Jmail here alongside Riley Walz. We had a ton of friends collaborate on building out more of the app suite last night in lieue of DOJ's "Epstein files" release. Please AMA!
Life & fun · Dec 2025 · jmail.world
PlanEat AI▲733AI turns your health goals into a 7-day menu & grocery list
AI · Dec 2025 · planeatai.com
- 2G
Community, All the HN belong to you. This is an archive of hacker news that fits in your browser. When I made HN Made of Primes I realized I could probably do this offline sqlite/wasm thing with the whole GBs of archive. The whole dataset. So I tried it, and this is it. Have Hacker News on your device. Go to this repo (https://github.com/DOSAYGO-STUDIO/HackerBook): you can download it. Big Query -> ETL -> npx serve docs - that's it. 20 years of HN arguments and beauty, can be yours forever. So they'll never die. Ever. It's the unkillable static archive of HN and it's…
Dev tools · Dec 2025 · hackerbook.dosaygo.com
