FastHTTP GUI

A minimal, fast, dark-native HTTP client for developers.
Built with Tauri · React · TypeScript · Rust

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Overview

FastHTTP GUI is a lightweight, cross-platform HTTP client designed to feel fast and stay out of your way. No bloat, no accounts, no telemetry — just you and your API.

The entire app fits in a few megabytes. The Rust backend handles every HTTP request natively, the frontend is pure React with zero UI libraries, and everything runs locally on your machine.

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Features

Request builder

• GET POST PUT DELETE PATCH methods with color-coded labels
• URL input with monospace font and keyboard shortcut (⌘ Enter / Ctrl Enter to send)
• Custom headers — add, toggle, delete per-request
• JSON body editor

Response viewer

• Syntax-highlighted JSON with colored keys, strings, numbers, booleans
• Response headers table
• Status badge with color by range — 2xx green · 3xx blue · 4xx red · 5xx yellow
• Elapsed time in milliseconds

Request history

• Persistent history across sessions (stored in localStorage)
• Real-time search by URL or HTTP method
• One-click restore — loads full request back into the form
• Clear history with confirmation

Code generator

• Generates ready-to-run Python + FastHTTP code from the current request
• Syntax highlighting for keywords, decorators, strings
• Copy button · Regenerate button
• Language badge: Python · FastHTTP

UI / UX

• Dark theme only — #0f1115 background, #151821 cards, #2a2f3a borders
• Collapsible history sidebar with smooth animation
• Monospace font throughout code areas (JetBrains Mono → Fira Code → system fallback)
• Custom scrollbars, hover transitions, focus rings — no browser defaults

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Stack

Layer	Technology
Shell	Tauri 2 — Rust-powered native window
Frontend	React 18 + TypeScript 5
HTTP engine	Rust reqwest
Build	Vite 5
Styles	Plain CSS (no UI library)
Distribution	GitHub Actions → GitHub Releases

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Installation

Go to the Releases page and download the build for your platform:

Platform	File
macOS (Apple Silicon)	.dmg aarch64-apple-darwin
macOS (Intel)	.dmg x86_64-apple-darwin
Windows	.msi
Linux	.AppImage · .deb

macOS note: the app is not notarized. On first launch: right-click → Open → Open anyway.

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Building from source

Prerequisites: Rust · Node.js 20+ · Tauri CLI prerequisites

git clone https://github.com/NEFORCEO/fasthttp-gui.git
cd fasthttp-gui

npm install
npm run tauri dev

Production build:

npm run tauri build

Installers land in src-tauri/target/release/bundle/.

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Made with obsessive attention to detail.