Firefox JavaScript Debugger Alternatives & Competitors

Sentry JavaScript Error Monitoring is a user-friendly tool that is created to automatically apply source maps to transform minified, compiled code back to its original form.

Key Sentry JavaScript Error Monitoring features:

Real-time Error Monitoring Detailed Error Reports Integration Capabilities User Experience Insights

Fiddler is a debugging program for websites.

Key Fiddler features:

Comprehensive Debugging Cross-Platform Compatibility Custom Scripting User-Friendly Interface

Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.

Key Netumo features:

Monitoring SSL Monitoring Twitter SMS notifications

Try for free freemium $9 / Monthly (Lite plan)

Deployment, Defacement, & Security Monitoring.

Key Fluxguard features:

Comprehensive Monitoring Automated Capturing Alerting System Visual Comparison

Inspect Element is a multi-functional tool that is introduced to get information about what makes the web tick, figure out what is broken in your sites, and mock-up what a specific color or font change would look like.

Firefox Page Inspector is a multi-featured tool that allows you to navigate through the components that go into rendering their pages, enabling you to achieve better performance, find bugs and check mobile views, and many others.

HTTP proxy / HTTP monitor / Reverse Proxy.

Key Charles Proxy features:

Comprehensive HTTP/HTTPS Debugging User-Friendly Interface Support for Various Platforms Throttling Feature