Open-source, zero-install cross-device productivity. Built for software developers, filmmakers, remote teams, and privacy-conscious users who demand fast, encrypted peer-to-peer file transfers and real-time clipboard synchronization without installing software.
Independent Creator Note · Updated for 2026
Like millions of engineers, designers, and students, my daily desk setup is a hybrid mix of operating systems: a MacBook for portable work, a custom Windows PC for development and gaming, and an Android phone in my pocket alongside an iPad.
For years, moving a 10GB 4K video clip or sending an authentication 2FA code across these devices was an infuriating chore. AirDrop refused to talk to Windows or Android. USB cables meant hunting for dongles or fighting buggy drivers. Cloud drives forced me to wait 20 minutes for a file to upload to a remote data center just to download it onto a computer sitting 10 inches away. Worse yet, like almost everyone else, I found myself creating single-person chats with myself on messaging apps just to sync a clipboard link—leaving sensitive text on third-party cloud servers.
When I tried existing local network tools, I ran into another wall: they almost all required installing 50MB desktop companion apps with administrator privileges. On locked-down enterprise laptops or guest computers, installing arbitrary software is simply not allowed.
That frustration sparked Textunnel. I designed it around three non-negotiable principles:
Today, Textunnel is completely free and open-source. Whether you are moving a batch of photos, an uncompressed video timeline, or a quick database connection string, I hope Textunnel saves you the same hours of friction it has saved me.
Transfers stream directly across your local Wi-Fi 6 router or mobile hotspot via WebRTC DataChannels, bypassing asymmetric cloud upload limits.
Files stream chunk-by-chunk directly into recipient device memory. Zero bytes are ever written, saved, or cached on remote hard drives.
Engineered with custom backpressure flow control and the Screen Wake Lock API to prevent memory overflows and sleep dropouts during overnight transfers.
Built on a 100% client-side serverless architecture. Zero expensive database hosting overhead guarantees Textunnel remains completely free.
Transferring a 5GB 4K video or copying an authentication OTP token between your iPhone and Windows laptop should not require installing heavy companion apps, plugging in fragile USB cables, or creating third-party cloud accounts.
We created Textunnel to eliminate the arbitrary barriers imposed by closed corporate ecosystems. By harnessing standard web technologies already present in Google Chrome, Apple Safari, Microsoft Edge, and Mozilla Firefox, we provide an immediate, hardware-agnostic bridge between iOS, Android, macOS, Windows, and Linux.
Traditional file-sharing platforms store your confidential data on remote servers, exposing it to potential data leaks, unauthorized scraping, and mandatory retention periods. Textunnel rejects this centralized paradigm entirely:
Our engineering philosophy prioritizes performance, open web standards, and radical simplicity:
Enables high-throughput bidirectional binary streaming with minimal protocol latency.
Streams multi-gigabyte datasets in small memory slices without exhausting browser heap limits.
We believe that software dealing with personal files and clipboard data must be open to independent verification. Textunnel is publicly open-sourced on GitHub. Anyone can inspect our code, verify our WebRTC signaling implementation, or contribute to upcoming features.
Textunnel is an open-source, browser-native productivity suite that enables instant peer-to-peer file sharing and real-time clipboard synchronization. Using WebRTC DataChannels, files and text stream directly across local Wi-Fi or cellular networks without intermediate cloud servers.
Yes. Because Textunnel uses a peer-to-peer architecture, your devices transfer data directly without burdening expensive central storage servers. This structural efficiency allows us to keep Textunnel completely free and open-source.
Textunnel utilizes DTLS 1.3 encryption and ephemeral in-memory processing. Your files and clipboard snippets never write to disk on third-party servers. The moment you close the browser tab, all session cryptographic keys and memory buffers are immediately destroyed.
Textunnel runs in all modern web browsers supporting WebRTC, including Chrome, Safari, Microsoft Edge, Mozilla Firefox, and Brave across Windows, macOS, iOS, Android, and Linux.
Yes. Textunnel features an advanced chunked streaming engine with browser backpressure control and HTML5 Screen Wake Lock integration, allowing seamless multi-gigabyte transfers up to 50GB+.
Textunnel is publicly open-sourced on GitHub. Developers can submit issues, propose pull requests, and contribute to WebRTC optimizations at https://github.com/haihiaen/Textunnel.
© 2026 Textunnel. Zero-cloud peer-to-peer productivity.