
ScrollMagic
WOW.js
ScrollReveal
Lax.js
Josh.js
3D Parallax Editor by Webydo
Modelo
Anime.js
Revievv
GeometryViewer
GrabCAD Workbench
Online 3D Viewer
3D Viewer Online
3D Viewer Max
3DViewer.co
Open3D Viewer
Revievv lets engineering teams review 3D CAD models (STEP/STL), PDFs and images directly in the browser. Pin comments on specific points of a 3D model, track issues with severity levels, and share a review link — reviewers don't need a CAD license or even an account.
Upload a STEP file, invite your team or suppliers by link, collect feedback with precise visual context. No more screenshots in PowerPoint, no more "see page 3, top left corner" emails.
Key features: - 3D STEP/STL viewer in the browser — no plugins, no installation - Pin comments directly on 3D model surfaces - PDF and image review with annotations and measurements - Share review links — unlimited free reviewers on all plans - Issue tracking with severity, status and deadlines - Export review as PDF with all annotations - Wire tracing on electrical schematics
Free plan available. No credit card required.
RevievvRevievv's answer:
Reviewers don't need a CAD license, an account, or any installed software. Just a link. Most design review tools charge per seat or require everyone to have CAD software. Revievv gives unlimited free reviewers on every plan - so your suppliers, clients and cross-functional teammates can give feedback without any barriers.
Revievv's answer:
Some competitors costs six figures and takes months to deploy. Revievv starts at $0, works in 30 seconds, and does what engineering teams actually need: open a CAD file, pin comments on the 3D model, share a link, collect feedback. No procurement process, no IT department required.
Revievv's answer:
Mechanical and electrical engineers in teams of 5-50 people — product design, manufacturing, automotive, aerospace. Engineers who send STEP files by email, mark up screenshots in PowerPoint, and lose feedback in chat threads. Also useful for engineering managers who need documented, traceable design reviews instead of meeting notes in Excel.
Revievv's answer:
Built by an engineer with ADHD who got tired of the same broken design review process, also had problems with doing all those related topics — screenshots in PowerPoint, feedback lost in email threads, "see attachment page 3 top left corner." Every CAD collaboration tool was either enterprise-priced or view-only. Revievv fills the gap: real design review with 3D markup, simple enough to start in 30 seconds, affordable enough for a small team.
Revievv's answer:
Three.js for 3D rendering, OpenCascade for STEP/STL geometry processing, Next.js for the web application, and cloud infrastructure for file conversion. Everything runs in the browser — no plugins or desktop installation needed.
Revievv's answer:
Revievv is an early-stage product used by small and mid-size engineering teams. We're focused on onboarding our first 100 customers — teams that need fast, affordable design review without enterprise overhead.
Based on our record, ScrollMagic seems to be more popular. It has been mentiond 25 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.
ScrollMagic (14.8k ⭐) — A library for creating scroll interactions with JavaScript and CSS. It can trigger animations based on scroll position and pin elements within the viewport. It has over 11K stars on GitHub. - Source: dev.to / over 2 years ago
Several libraries and frameworks can help with this task, such as ScrollTrigger, ScrollMagic, Framer Motion, and the good ol’ Intersection Observer API. These tools provide more options and flexibility to create complex and interactive scroll-driven animations with ease. - Source: dev.to / over 2 years ago
By checking their source code, it looks like they're using DrawSvgPlugin for the SVG animations and ScrollMagic for the animations when scrolling. I'd start by checking these two libraries. Source: about 3 years ago
One library is called https://scrollmagic.io/ but you'll find plenty of tutorials and videos that implement this kind of scrolling. Source: over 3 years ago
ScrollMagic (there's a scrollMagic port for react too). These libraries take advantage of the intersection observer API (a standard built-in js web api). You may also be interested in the scroll event. Source: almost 4 years ago
WOW.js - Animate elements on-scroll to catch attention. Such Magic.
GeometryViewer - Free browser-based 3D model viewer for 3D printing enthusiasts and designers. Open STL, OBJ, GLB, GLTF, 3MF and FBX files instantly in your browser. Get a shareable link, view in AR on mobile, export a GIF, or embed it on Shopify or any website.
ScrollReveal - ScrollReveal is a tool to add scroll animations for web and mobile browsers.
GrabCAD Workbench - GrabCAD Workbench is a world’s most popular online community specially designed for mechanical engineers to share talent, expand knowledge and collaborate with the others.
Lax.js - Create beautiful & smooth animations when you scroll
Online 3D Viewer - Online 3D Viewer is an engine to visualize 3D models online.