Sonar

Sonar is a native tool for debugging webhooks. It captures incoming requests and

lets you inspect headers, body content, and query parameters in real-time.

Core Features:

Instant public URLs via ngrok integration for webhook testing

Real-time capture of incoming webhook requests as they arrive

Detailed inspection of headers, body content, query parameters, and metadata

Quick copy functionality including JSON, cURL, and HTTP formats

Clean Libadwaita interface that integrates perfectly with GNOME

Fast and lightweight native application with minimal resource usage

Advanced Features:

Request bookmarking and starring for quick access

Request replay to resend webhooks to custom URLs

Side-by-side request comparison to spot differences

Request templates for saving and reusing webhook patterns

Automatic webhook forwarding to multiple URLs

Advanced filtering by method, content-type, time range, and search

Persistent history with JSON storage