Transcrypt
Brython
Skulpt
JavaScript
Pyjs
Bosque
asciinema
Kivy
RepDB
RepDB is a one-time-purchase exercise dataset with animations for developers building fitness and workout apps — 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 600+ exercises with flat-style 512×512 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 — 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.
Transcrypt RepDBRepDB's answer:
RepDB is sold as a one-time download, not a metered API — 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 — 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, Transcrypt seems to be more popular. It has been mentiond 5 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 is a laudable effort, but I'm not a fan of shipping the entire interpreter. I looked around a few weeks ago and found https://transcrypt.org, which compiles your Python script to JS, so size is minimal. It's great for shipping small, internal tools/apps, I love how maintainable they are by all the Python devs, plus they're very fast to load and execute. - Source: Hacker News / about 4 years ago
How is the Python being run by the browser? Several impressive projects bring Python to the browser, such as Brython, Transcrypt, Skulpt, Pyodide. PySketch uses Brython that compiles Python to JavaScript in the browser. You can take a look at this article about technologies and comparisons if you want to learn more. - Source: dev.to / over 4 years ago
I have a Python program that takes user input from the console and shows some results on the console, and I want the user to be able to type stuff into it instead of pre-recorded runs. How do I do that? I'm not really sure. You could have a copy of Python running on the server and have the front-end communicating with it, but you'd have to be sure it's secured -- there are a lot of dangerous Python commands... Source: almost 5 years ago
For web apps: in my experience, there are tools that convert Python into JavaScript or try to make Python run inside a web browser like Brython and Transcrypt. These have been VERY awkward or painfully slow, so I would strongly discourage their use in practical web development. Source: over 5 years ago
A while back, I posted about my initial foray into using Python to develop front-end web applications with React by using the Transcrypt transpiler. Python in the Browser Part of the initial learning process I went through was doing the official React tutorial, but using Python for the code instead of JavaScript. When I did that, I adhered to the structure of the application that was used in the tutorial... - Source: dev.to / almost 6 years ago
Brython - Brython's goal is to replace Javascript with Python, as the scripting language for web browsers.
Skulpt - Skulpt is an entirely in-browser implementation of Python.
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
Pyjs - pyjs is a Rich Internet Application (RIA) Development Platform for both Web and Desktop.
Bosque - The Bosque programming language is an experiment in regularized design for a machine assisted rapid and reliable software development lifecycle.
asciinema - Record and share your terminal sessions, the right way. Forget screen recording apps and blurry video. Enjoy a lightweight, purely text-based approach to terminal recording.