Features
Everything you need in one portable binary
Dual Pane
Two independent serial terminals side by side, each with its own port, config, and WebSocket connection.
Data Bridge
Forward data between panes with direction control (L→R, R→L, Both), regex extraction, and digits-only mode — synced across all clients.
Sequence Sender
Auto-generate and send data at configurable intervals using template variables:
{counter}, {random:N}, {hex:N}, {time}, {date}.Session Persistence
Serial sessions survive browser refresh. Reconnect and pick up data flow immediately — no lost context.
Multi-Client Sync
Open on multiple LAN PCs simultaneously. All clients see the same active sessions and bridge state in real-time.
XMODEM Transfer
Send and receive files using the XMODEM-CRC protocol with a per-block progress bar.
File Logging
Log all RX data to a file with start/stop control per pane. Never miss a byte.
Multiple Formats
ASCII, HEX, Binary, and Octal views — togglable per pane. Plus raw hex dump view.
On-the-fly Config
Change baud rate, data bits, parity, stop bits, and flow control without disconnecting.
Dark & Light Themes
Toggle with one click, persisted to localStorage. Comfortable for day and night use.
PIN Protection
Optional PIN gate on server startup for secure network sharing.
Bilingual (EN / ID)
Switch between English and Indonesian with the flag button. Persisted to localStorage.
Architecture
Rust backend + Vanilla JS frontend — clean, fast, no dependencies
┌─────────────────────────────────────────────────────┐
│ Browser (UI) │
│ ┌──────────┐ divider ┌──────────┐ │
│ │ Pane 1 │ ═════════ │ Pane 2 │ │
│ │ (WS) │ │ (WS) │ │
│ └────┬─────┘ └────┬─────┘ │
│ │ │ │
└───────┼──────────────────────┼──────────────────────┘
│ WebSocket (ws://) │
▼ ▼
┌─────────────────────────────────────────────────────┐
│ Rust Backend (axum 0.7) │
│ ┌──────────┐ ┌──────────┐ │
│ │ Session 1│ │ Session 2│ ... │
│ │ (serial) │ │ (serial) │ │
│ └────┬─────┘ └────┬─────┘ │
│ │ │ │
│ ▼ ▼ │
│ ┌──────────┐ ┌──────────┐ │
│ │ COM port│ │ COM port│ │
│ └──────────┘ └──────────┘ │
└─────────────────────────────────────────────────────┘
Download
Pre-built binaries from GitHub Actions — always the latest build
🐧 Linux
x86_64 · musl (fully static)
Requires libudev on glibc builds; static musl build has zero deps
↓ Download binary🍎 macOS Intel
x86_64-apple-darwin
Uses IOKit framework — built-in on all modern Macs
↓ Download binary👉 Go to Actions → Build → click the latest successful run → download for your platform.
Quick Start
Up and running in under a minute
STEP 1
Download
Get the binary for your platform from the GitHub Actions page.
STEP 2
Run It
Linux/macOS: chmod +x pangrango && ./pangrango
Windows: double-click or run .exe.
STEP 3
Configure
Choose your port (default 8080), bind address, and optional PIN.
STEP 4
Open Browser
Navigate to http://localhost:8080 and click Connect.