Side-by-side comparison of two listed Dev Tools — real listing data only, no paid placement.
On record, they differ in: unique tags (JS Visualizer 9000 3: #visualizer #education #debugging vs Make Bookmarklets 3: #bookmarklet #code-generator #browser-tool); category rank (JS Visualizer 9000 #14 vs Make Bookmarklets #22). Same pricing model (Free) and category (Dev Tools). Listing facts only — not a recommendation.
Visualize JavaScript execution step by step
JS Visualizer 9000 is a web-based tool that helps developers understand how JavaScript code runs by providing a visual representation of execution. It requires JavaScript to be enabled in the browser to function. The tool is designed for educational purposes, allowing users to see the flow of code execution in a clear, interactive way.
Published 2026-08-08 · Links checked 2026-09-06
Clean and easy bookmarklet generator
Make Bookmarklets is a browser-based tool for creating and testing bookmarklets. It automatically wraps JavaScript in an IIFE, provides linting, multiline cursor, intellisense, and minification. The tool works well on mobile devices and includes example bookmarklets for reference.
Published 2026-08-08 · Links checked 2026-09-06
| JS Visualizer 9000 | Make Bookmarklets | |
|---|---|---|
| Pricing | Free | Free |
| Category | Dev Tools | Dev Tools |
| Rank in Dev Tools | Position #14 of 77 | Position #22 of 77 |
| Alternatives listed | 11 → | 10 → |
| Shared tags | #indie #javascript | |
| Unique tags | #visualizer #education #debugging | #bookmarklet #code-generator #browser-tool |
| Source code | github.com/Hopding/js-visualizer-9000-client | Not detected on official site (checked 2026-09-20) |
| In their own words | — | A bookmarklet generator which is clean and easy to use. Create and test bookmarklets in your browser. Extend your browsing experience any way you see fit.— official site (homepage description), checked |
| Official website | www.jsv9000.app | make-bookmarklets.com |
| Site preview | ||
Rank = neutral rotation by listing ID, not a quality score · how it works
JS Visualizer 9000 is Free; Make Bookmarklets is Free. Both are listed in Dev Tools on ToolDock.
What they have in common: #indie · #javascript
JS Visualizer 9000 is listed as free; Make Bookmarklets is listed as free. Pricing label set at listing time; official pricing page linked where verified — see each official website for current details.
Both are Dev Tools listed on ToolDock, and they share the tags indie, javascript.
ToolDock keeps a tag-matched alternatives list for each: see JS Visualizer 9000 alternatives and Make Bookmarklets alternatives.