 Traffic Inspector |
 Repeater Workstation |
 Scope Sniper |
Unlike legacy, bloated proxies, Alastor was built to be the centerpiece of a developer's workflow. It combines Go's raw speed for packet processing with an ultra-fluid React interface, delivering a "Workstation" experience for debugging and API analysis.
The Vision: While born as a MITM Proxy, Alastor is evolving into a comprehensive API development platform, merging the best of traffic interception with advanced request management.
Total visibility into your network traffic.
- Deep Inspection: Analyze Headers, Cookies, and Body (JSON, Text) with professional syntax highlighting via CodeMirror 6.
- Automatic Prettify: Intelligent formatting of minified payloads in real-time.
- Ultra-low Latency: High-speed data streaming via Wails Bridge for a jank-free UI.
The functionality you love in tools like Postman, now natively integrated into your Proxy.
- Replay & Edit: Capture a live request and modify it instantly.
- Side-by-side Diff: Compare responses and validate behavioral changes in your endpoints.
Focus on what matters, ignore the rest.
- Smart Filtering: Built-in blacklists to ignore telemetry and noise (Google, Windows Update, Spotify).
- Extension Drop: Automatically discard static assets (.png, .woff2, .css) directly at the Proxy core.
Your work is an asset. Don't lose it.
- Native Sessions: Save complete captures in the
.alastorformat. - Offline Analysis: Load snapshots for later review without re-executing traffic.
Download the latest executable for your system from Releases.
To intercept secure traffic:
- Open Alastor and navigate to Settings > System & Certs.
- Install the generated
alastor-ca.crtcertificate into your system or browser.
Point your system or browser traffic to: localhost:8080
If you wish to contribute or build from source:
# Install dependencies
pnpm install
# Run in Development mode (Hot Reload)
wails dev
# Build for Production
wails build