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Top 17 JavaScript Debugging / Profiling Projects
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SurveyJS
JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Keep full control over the data you collect and tailor the form builder’s entire look and feel to your users’ needs. SurveyJS works with React, Angular, Vue 3, and is compatible with any backend or auth system. Learn more.
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debug
A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers
Project mention: If you're building a JavaScript library and need logging, you would love LogTape | news.ycombinator.com | 2025-06-23It seems a lot of thought was put into the design of LogTape. I may integrate my logging tool with LogTape. My tool needs the callsite, so I don't think I can just write a LogTape sink; I think it would also have to wrap/extend LogTape itself.
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I built a DX-focused logging library on top of debug-js. Notable features of https://github.com/Leftium/gg:
- Automatic namespaces based on calling function + path to source filename/path.
- Can be inserted into the middle of expressions.
- Can output a link that opens the file in your editor/IDE of choice.
- Simple to disable
- Diagnostics/hints to help with installation/configuration
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I was surprised by the amount of logs already being output (by Vite) when I simply added https://github.com/debug-js/debug to my project.
Fortunately, debug-js output is very simple to filter via ENV and/or localStorage.debug
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What I look for in a logging library (with more focus on dev/debugging than production):
- Easy to add new logs.
- Easy to identify the location of the code that triggered the log. I noticed a lot of my logging was simply to indicate the start and maybe end of a function call. If needed, I might add additional logs between these.
- Easy to surgically disable/filter groups of logs. Should be easier than commenting/uncommenting calls to logger. Otherwise I end up with lots of uninteresting log chatter (or I delete log statements, only to add them again later...)
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0x: flamegraph generator for CPU profiling.
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why-is-node-running
Node is running but you don't know why? why-is-node-running is here to help you.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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swagger-stats
API Observability. Trace API calls and Monitor API performance, health and usage statistics in Node.js Microservices.
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thetool
thetool is a CLI tool to capture different cpu, memory and other profiles for your node app in Chrome DevTools friendly format
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NiM
Streamline Your Node.js Debugging Workflow with Chromium (Chrome, Edge, More) DevTools. (by june07)
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript Debugging / Profiling discussion
JavaScript Debugging / Profiling related posts
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If you're building a JavaScript library and need logging, you would love LogTape
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Interesting Project: why-is-node-running
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Why write a library?
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Conditional logging
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Looking for resources for profiling and debugging?
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Beginner’s Guide On Sending Automated Emails With Node.js, Nodemailer, and Cron Jobs
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Understanding and Preventing Memory Leaks in Node.js
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A note from our sponsor - Stream
getstream.io | 17 Jul 2025
Index
What are some of the best open-source Debugging / Profiling projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | node-inspector | 12,668 |
| 2 | debug | 11,300 |
| 3 | devtool | 3,754 |
| 4 | 0x | 3,418 |
| 5 | ironNode | 2,327 |
| 6 | why-is-node-running | 1,917 |
| 7 | leakage | 1,583 |
| 8 | Theseus | 1,333 |
| 9 | swagger-stats | 921 |
| 10 | jstrace | 383 |
| 11 | njsTrace | 374 |
| 12 | stackman | 252 |
| 13 | thetool | 222 |
| 14 | NiM | 196 |
| 15 | bugger | 157 |
| 16 | ctrace | 120 |
| 17 | vstream | 59 |
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