Dev tools · alternatives · 2026
24 alternatives to ECMA.app
The JS/TS playground that shows what your code does.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Pts is a javascript library for visualization and creative-coding.
2018 · ptsjs.org · its alternatives →
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Wing Playground▲253Iterate on cloud apps in milliseconds, not minutes
2024 · winglang.io · its alternatives →
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Codemap visualizes any codebase as a graph for software engineers to quickly understand the code architecture. Supports Typescript, Python, Java, PHP, Ruby, Go (Golang), and Terraform.
2020 · codemap.app · its alternatives →
- 5EC
2015 · ruanyf.github.io · its alternatives →
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QuickBEAM is a JavaScript runtime embedded inside the Erlang/OTP VM. If you’re building a full-stack app, JavaScript tends to leak in anyway — frontend, SSR, or third-party code. QuickBEAM runs that JavaScript inside OTP supervision trees. Each runtime is a process with a `Beam` global that can: - call Elixir code - send/receive messages - spawn and monitor processes - inspect runtime/system state It also provides browser-style APIs backed by OTP/native primitives (fetch, WebSocket, Worker, BroadcastChannel, localStorage, native DOM, etc.). This makes it usable for: - SSR…
Mar 2026 · github.com · its alternatives →
- 7RT
2014 · scoutapp.github.io · its alternatives →
- 8
Simple, fast way to find and try any MCP server. No setup.
Feb 2026 · its alternatives →
- 9
AppMaster.io▲383No-code app builder with code generation & export
2022 · appmaster.io · its alternatives →
- 10
Hey HN, I just built an experimental VSCode extension called LLM Debugger. It’s a proof-of-concept that lets a large language model take charge of debugging. Instead of only looking at the static code, the LLM also gets to see the live runtime state—actual variable values, function calls, branch decisions, and more. The idea is to give it enough context to help diagnose issues faster and even generate synthetic data from running programs. Here’s what it does: * Active Debugging: It integrates with Node.js debug sessions to gather runtime info (like variable states and stack traces). *…
2025 · github.com · its alternatives →
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Create and share simple web demos using TypeScript, CSS, and HTML. Prototype new ideas quickly.
2017 · codewich.com · its alternatives →
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- 15LI
Mengutamakan tampilan modern dan kemudahan navigasi, BUSUR4D menghadirkan pengalaman gaming yang terasa lebih sederhana namun tetap menarik. Beragam pilihan permainan dapat dijelajahi dalam satu platform dengan interface responsif dan desain visual yang nyaman, sehingga aktivitas gaming menjadi lebi
2011 · logio.org · its alternatives →
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- 17AP
2015 · fatiherikli.github.io · its alternatives →
- 18
Inspired by Compiler Explorer and other playground/fiddle websites like jsfiddle, db-fiddle, Go playground, and Rust playground, I thought it would be cool to have a playground for nearly any program so I've been working on Program Explorer: a playground for running programs from containers. I am inspired by these playgrounds because they are great educational tools for quickly experimenting and as communication tools by sharing shortlinks that reproduce bugs for instance. I would love for every open source project that publishes a container to get their own playground for free. I'm…
2025 · programexplorer.org · its alternatives →
- 19
An implementation of ECMA-262 in JavaScript. Contribute to engine262/engine262 development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 20
My favorite JS/TS job processing framework. Maybe yours too? [ARCHIVED] - eropple/taskbotjs
2018 · github.com · its alternatives →
- 21GP
2021 · go-playground-wasm.vercel.app · its alternatives →
- 22
VS Code extension for building web applications ("swings") using a interactive and editor-integrated coding environment - lostintangent/codeswing
2020 · github.com · its alternatives →
- 23
Open sourcing Ezno's checker and trying out / previewing the JavaScript type checker today
2023 · github.com · its alternatives →
- 24
If you've built any web-based app in the last 15 years, you probably used something like Datadog, New Relic, Sentry, etc. to monitor and trace your app, right? Why should it be different when the app you're building happens to be using LLMs? So today we're open-sourcing OpenLLMetry-JS. It's an open protocol and SDK, based on OpenTelemetry, that provides traces and metrics for LLM JS/TS applications and can be connected to any of the 15+ tools that already support OpenTelemetry. Here's the repo: https://github.com/traceloop/openllmetry-js A few months ago we launched…
2024 · github.com · its alternatives →
Also compare
- Pts.js – A library for visualization and creative coding alternatives
- ECMASyntax alternatives
- Wing Playground alternatives
- Codemap – Codebase Visualizer for JavaScript, TypeScript, and Python alternatives
- ES-Checker, a feature detection library for ECMAScript alternatives
- QuickBEAM – run JavaScript as supervised Erlang/OTP processes alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →