skulpt VS wasmtime

Compare skulpt vs wasmtime and see what are their differences.


Skulpt is a Javascript implementation of the Python programming language (by blockpy-edu)


A fast and secure runtime for WebAssembly (by bytecodealliance)
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skulpt wasmtime
1 97
4 9,293
- 13.5%
1.3 9.9
3 months ago 2 days ago
JavaScript Rust
GNU General Public License v3.0 or later Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of skulpt. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-03-26.


Posts with mentions or reviews of wasmtime. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-09-22.
  • Difference between cargo-vet and cargo-crev?
    2 projects | | 22 Sep 2022
    I really want to use the wasmtime audits but even though I can import this with cargo vet because there is nothing transitive I have to go into the config.toml to find all the other audits that BCA imported so I can configure them myself.
  • Wasmtime Reaches 1.0: Fast, Safe and Production Ready!
    5 projects | | 20 Sep 2022
    There's an RFC here: and Saúl Cabrera, the person who is leading this effort and implementing the compiler tier, has a work-in-progress draft PR here:
  • Wasmtime 1.0
    14 projects | | 20 Sep 2022

    It is strange to me to call it 1.0 without seamless threading support and while wasm & wasi still have standards to work out.

    Multithreading is a basic operation in everything I build right now. It allows me to make a highly responsive UI while doing massive computations without any user experience impact. It lets me make services which can handle thousands of requests a second. And with Rust, this all comes ergonomically. At this point, I can’t think of a single solution I would implement without doing some form of this.

    While I could treat a wasm application as a client server model (have one module for interfacing / managing, have X for processing where X is the number of available cores) then share memory between them, this creates a lot of boilerplate and makes the code less ergonomic, and can drastically increase friction. I don’t want to have to hack threading into an application with so much manual setup, and I don’t like when a runtime forces architecturally decisions because it lacks a basic capability.

    Anyway, congrats on the release. I will look forward to 2.0 of these runtimes.

    14 projects | | 20 Sep 2022
    I assumed that like most low-level runtimes it wouldn't be easy to just go and play with for fun, but the Example is impressively simple:

    Maybe I'll take it for a spin

  • What will you do with your jh7110?
    2 projects | | 30 Aug 2022
    See if I can get Wasmtime working
    2 projects | | 30 Aug 2022
    Someone's already working on it, and it looks almost done
  • Build script, link to a .rlib and use it as an external crate
    2 projects | | 27 Aug 2022
  • Suggestion for a backend?
    5 projects | | 11 Aug 2022
    cranelift ( is also an option.
  • Exploring .NET WebAssembly with WASI and Wasmtime
    8 projects | | 9 Aug 2022
    WebAssembly (Wasm) is something that the Cloud Native Advocacy team has been exploring. It has been around for a few years and has mostly been used within browser-based applications. There are many blog posts on what makes WebAssembly an ideal target for running applications (e.g., smaller footprint with .wasm files compared to containers, code isolation, and sandboxing). My colleague Steven Murawski wrote a blog series on getting started with hosting Wasm apps on an emerging PaaS platform called Hippo which is developed by folks at Fermyon. In Part 1 of the series, he introduces topics and define some of the acronyms like "Wagi" and "WASI". He also introduced a runtime called Wasmtime which implements the WebAssembly System Interface (WASI) standard. This article will walk you through how Steven and I went about getting a .NET console app running as a Wasm app on the Wasmtime runtime in a Dev Container. The .NET console app produced in this article has also been contributed as a csharp template in the yo-wasm repo which is also maintained by Fermyon; so you can quickly test it out for yourself later.
  • Hey Rustaceans! Got a question? Ask here! (31/2022)!
    11 projects | | 2 Aug 2022
    Check out Cranelift

What are some alternatives?

When comparing skulpt and wasmtime you can also consider the following projects:

wasmer - 🚀 The leading WebAssembly Runtime supporting WASI and Emscripten

SSVM - WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices.

quickjs-emscripten - Javascript/Typescript bindings for QuickJS, a modern Javascript interpreter written in C by Fabrice Bellard.

wasm-bindgen - Facilitating high-level interactions between Wasm modules and JavaScript

wasm-pack - 📦✨ your favorite rust -> wasm workflow tool!

trunk - Build, bundle & ship your Rust WASM application to the web.


mold - mold: A Modern Linker

wasm3 - 🚀 The fastest WebAssembly interpreter, and the most universal runtime

pybind11 - Seamless operability between C++11 and Python

PyO3 - Rust bindings for the Python interpreter

rust-raspberrypi-OS-tutorials - :books: Learn to write an embedded OS in Rust :crab: