Dev tools · alternatives · 2026
24 alternatives to CLS Debugger
Test and debug Cumulative Layout Shifts, by ex-Google.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. CLS Debugger launched in 2022; newer entries below may have overtaken it.
- 1
CLS Checker▲60Visualise & debug layout shifts (CLS) in the browser
2021 · chromewebstore.google.com · its alternatives →
- 2AW
Hey HN, I wanted to show you a product a small team and I have been working on for 4 years. https://jam.dev It’s called Jam and it prevents product managers (like I used to be) from being able to create vague and un-reproducible bug tickets (like I used to create). It’s actually really hard as a non-engineer to file useful bug tickets for engineers. Like, sometimes I thought I included a screenshot, but the important information the engineer needed was what was actually right outside the boundary of the screenshot I took. Or I'd write that something "didn't work" but the engineer…
2024 · its alternatives →
- 3
CSS debugging tool with an unpronounceable name. Contribute to lucagez/Debucsser development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 4
An ebook with lots of tips and techniques on how to debug CSS the right way with easy and studied methods.
2020 · debuggingcss.com · its alternatives →
- 5
A simple Python debugger and profiler that generates animated visualizations of program flow, useful for algorithm learning. - CCExtractor/vardbg
2020 · github.com · its alternatives →
- 6
Hey HN, I just built an experimental VSCode extension called LLM Debugger. It’s a proof-of-concept that lets a large language model take charge of debugging. Instead of only looking at the static code, the LLM also gets to see the live runtime state—actual variable values, function calls, branch decisions, and more. The idea is to give it enough context to help diagnose issues faster and even generate synthetic data from running programs. Here’s what it does: * Active Debugging: It integrates with Node.js debug sessions to gather runtime info (like variable states and stack traces). *…
2025 · github.com · its alternatives →
- 7
Hey all, I've been working on this side project to get a Cypress.io-like experience, but for Ruby developers. It's plug-n-play with Capybara system tests, with the following features: - visualize assertions/commands as they happen - view all API requests, errors, and logs in the timeline - pause/continue on any step - rewind through history with a recorded video This is brand new, so looking for people to start trying it out and leave feedback.
2024 · github.com · its alternatives →
- 8
Your SSOT for debugging analytics implementations
2023 · analytics-debugger.com · its alternatives →
- 9
Whitespace▲137One-click bug reports straight from your browser
2024 · whitespace.dev · its alternatives →
- 10
First single-stepping debugger with everything you wanted
2023 · sentio.xyz · its alternatives →
- 11PD
A tool to debug PDF files
2023 · pdf.hyzyla.dev · its alternatives →
- 12
Fix flaky browser tests once and for all
2023 · replay.io · its alternatives →
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- 16
Hi HN, I built this because I got tired of the Claude Code CLI hiding details from me. Recent updates have replaced critical output with summaries like "Read 3 files" or "Edited 2 files". To see what actually happened, I was forced to use `--verbose`, which floods the terminal with unreadable JSON and system prompts. I wanted a middle ground: *Full observability without the noise.* `claude-devtools` is a local Electron app that tails the session logs in `~/.claude/` to reconstruct the execution trace in real-time. *Unlike wrappers, it solves the visibility gap in your native…
Feb 2026 · github.com · its alternatives →
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Hi HN! We’re Adrien and Kanav. We met at our previous job, where we spent about a third of our lives combating a constant firehose of bugs. In the hope of reducing this pain for others in the future, we’re working on automating debugging. We’re currently working on a platform that ingests logs and then automatically reproduces, root causes and ultimately fixes production bugs as they happen. You can see some of our work on this here - https://news.ycombinator.com/item?id=39528087 As we were building the root-cause phase of our automated debugger, we realized that we developed…
2024 · github.com · its alternatives →
- 19WM
2025 · npmjs.com · its alternatives →
- 20
Interactive, node-by-node debugging and visualization for TensorFlow - ericjang/tdb
2015 · github.com · its alternatives →
- 21
Visual Debug▲83A visual feedback tool for better client-dev communication
2023 · visualdebug.com · its alternatives →
- 22
Glance ▲87Real browser for Claude Code Test, Screenshot, Automate
Mar 2026 · glance.debugbase.io · its alternatives →
- 23
- 24AV
2015 · symbolflux.com · its alternatives →
Also compare
- CLS Checker alternatives
- A web debugger an ex-Cloudflare team has been working on for 4 years alternatives
- Debucsser, CSS debugging made easy alternatives
- I wrote a book about Debugging CSS alternatives
- Debugger that generates video visualizations for algorithm learning alternatives
- Letting LLMs Run a Debugger alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →