
Three.js
p5.js
PixiJS
Paper.js
D3.js
Anime.js
Konva
Pixi.js
Markdrop
BugHerd
Pastel
Webvizio
Three.js
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Markdrop's answer:
Markdrop combines powerful visual feedback, screen recording, and developer-ready bug reporting into a single, lightweight tool that feels invisible until you need it. Unlike bloated alternatives, Markdrop is fast, easy to integrate, and built for modern teams who care about speed and clarity with no Chrome extension or signup friction required.
Markdrop's answer:
Affordable, transparent pricing: Markdrop offers all the core features at a fraction of the cost of tools like Markup.io or Pastel.
Designed for devs and designers: Every comment can include logs, screen recordings, and environment data ready for developers to act on.
No friction for users: Share a link and anyone can leave feedback. No browser extensions, no accounts, no hassle.
Fast and privacy-respecting: Lightweight script, GDPR-compliant, and zero tracking bloat.
All-in-one: Combines comments, annotations, bug reporting, and async video so teams donโt need 3 different tools.
Markdrop's answer:
Markdrop is built for:
Founders and indie builders who want fast feedback without complex tools
Designers and PMs collecting client or stakeholder feedback
Developers who want bug reports with context, not vague screenshots
Agencies delivering websites and apps that need client review In short, itโs for lean product teams who value clarity and speed.
Markdrop's answer:
Markdrop was born out of frustration. As a solo founder building multiple products, I (Manuel) kept running into the same feedback pain, long email chains, vague bug reports, and overpriced tools that did too much or too little. So I built what I needed: a clean, no-fuss tool to drop comments directly on a site, see what users saw, and get back to shipping.
Markdrop's answer:
Which are the primary technologies used for building your product?
Frontend: Svelte 5 Backend: Cloudflare Workers, D1, and Durable Objects Database: Wrangler DB (D1) DevOps/Infra: Cloudflare Pages + R2 for static assets and file storage
Markdrop's answer:
Indie founders using Markdrop to launch and iterate faster
Agencies working with clients.
YC applicants using it to get fast design review
No-code builders collecting client feedback inside Webflow
Internal product teams replacing Slack screenshots with structured feedback
Based on our record, Three.js seems to be more popular. It has been mentiond 256 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
This looks like the usual https://threejs.org animation built by LLMs. I'm more interested in the source of the data and if it was reviewed for correctedness. - Source: Hacker News / 23 days ago
Frontend: Three.js for the 3D engine, Vite for a lightning-fast build. - Source: dev.to / 3 months ago
When a 360 viewer loads this image, it wraps it onto the inside of a sphere using Three.js and places the camera at the center. You drag to rotate, scroll to zoom, and the flat image becomes an immersive scene. - Source: dev.to / 3 months ago
Threejs - 3D animations on the browser, using WebGL in an intuitive way. - Source: dev.to / 6 months ago
3D Graphics: Three.js with @react-three/fiber โ for interactive 3D elements. - Source: dev.to / 6 months ago
p5.js - JS library for creating graphic and interactive experiences
BugHerd - BugHerd: The Website Feedback Tool for Agencies
PixiJS - Fast and flexible WebGL-based HTML5 game and app development library.
Pastel - Sticky note-based feedback collection tool for live websites
Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
Webvizio - This free website feedback tool & website review software allows managers and teams to collaborate on website revisions in real time. Join for free now!