Best JSNLog Alternatives & Competitors in 2025

Rollbar collects errors that happen in your application, notifies you, and analyzes them so you can debug and fix them. Ruby, Python, PHP, Node.js, JavaScript, and Flash libraries available.

Unbloated, yet feature rich. CatchJS provides JavaScript Error Tracking the way it should be.

DCIM software reinvented.

Try for free paid Free Trial $600.0 / Annually (300 Assets)

JavaScript Error Monitoring from TrackJS gives you context about what's happening in your end-users' browsers.

Painless JavaScript Error Tracking

Backend Development and Utilities

Open Source

Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.

From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.

log4net is a tool to help the programmer output log statements to a variety of output targets.

Airbrake is the leading exception reporting service, currently providing error tracking.

paid Free Trial $19.0 / Monthly (25K errors per month)

NLog is a free logging platform for .NET with rich log routing and management capabilities.

Open Source

Not all bugs are worth fixing. Prioritize and fix software bugs that matter while improving software stability with every release.

freemium

ZeroLog is a JSON logging library that allows you to log messages in a structured, searchable, and easily parseable format and allow for customizable output.

Open Source

Don't let your users walk away in frustration.

Open Source