Three.js
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D3.js
Anime.js
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Pixi.js
RepDB
RepDB is a one-time-purchase exercise dataset for developers building fitness and workout apps โ not a subscription, not a rate-limited API. You download the data once and own it: JSON (and SQLite on the higher tier), WebP images, and full EN/DE/ES translations, with no per-request billing and no dependency on our servers staying up.
A free tier includes 250 exercises with flat-style 512ร512 images, attribution-licensed for commercial in-app use. The Starter tier ($199) adds the full catalog in classic white-background style. Standard ($399) adds transparent 1024px images, looping animations, exercise relations (similar/progressions/regressions), workout templates, and embeddings โ exclusive to that tier.
Every exercise includes muscle-group highlighting, equipment/muscle icons, MET values, and safety/goal tags. Compared to GIF- or JPG-based competitor APIs, RepDB images are transparent WebP with no watermarks, so they drop into any app UI without a white box around them.
Three.js RepDBRepDB's answer:
RepDB is sold as a one-time download, not a metered API โ you own the JSON/SQLite data and WebP images outright, with no rate limits, no per-request billing, and no risk of the vendor cutting off access. It's also the only dataset in this space with EN/DE/ES translations, transparent (alpha-channel) images with no watermark, muscle-group highlighting, safety/goal tags, and looping animations on the higher tier.
RepDB's answer:
RepDB grew out of a consumer workout app its creator was building solo. Sourcing exercise images and data meant either paying for a subscription API with usage caps and no caching rights, or producing everything from scratch. The illustrated, multi-language dataset was built for us first, then split out as its own product once it became clear other indie developers had the same problem and preferred to buy the data outright rather than rent it through an API.
RepDB's answer:
Most alternatives are subscription APIs โ you pay monthly, you're capped on requests, and ExerciseDB's terms of use explicitly forbid caching or storing the data at all, so every image render is a live paid API call. RepDB is the opposite: pay once, download the files, self-host with zero ongoing dependency. It's also the only option offering true DE/ES localization and transparent images instead of a white box behind every exercise.
RepDB's answer:
Solo developers and small teams building fitness or workout-tracking apps (iOS, Android, web) who need licensed exercise images and structured exercise data, but don't want to build their own media pipeline or depend on a rate-limited third-party API.
Based on our record, Three.js seems to be more popular. It has been mentiond 257 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.
So I have a bunch of small games on my site. Ludo, tic-tac-toe, carrom, rock-paper-scissors. Nothing fancy, the kind of thing you'd think runs on a potato. They're built with Three.js, which is the standard library for drawing 3D graphics in a web page. I was testing them on my iPhone and the phone got genuinely hot. Hot to hold. And here's the part that bugged me: I wasn't even doing anything. I was just sitting... - Source: dev.to / 11 days ago
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 / about 2 months ago
Frontend: Three.js for the 3D engine, Vite for a lightning-fast build. - Source: dev.to / 4 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 / 4 months ago
Threejs - 3D animations on the browser, using WebGL in an intuitive way. - Source: dev.to / 7 months ago
p5.js - JS library for creating graphic and interactive experiences
PixiJS - Fast and flexible WebGL-based HTML5 game and app development library.
Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
Anime.js - Lightweight JavaScript animation library
Konva - Konva is 2d Canvas JavaScript framework for drawings shapes, animations, node nesting, layering, filtering, event handling, drag and drop and much more.
