copilot VS mrustc

Compare copilot vs mrustc and see what are their differences.


A stream-based runtime-verification framework for generating hard real-time C code. (by Copilot-Language)


Alternative rust compiler (re-implementation) (by thepowersgang)
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copilot mrustc
16 71
515 2,007
0.6% -
0.0 2.7
12 days ago 2 days ago
Haskell C++
GNU General Public License v3.0 or later MIT License
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 copilot. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-08.


Posts with mentions or reviews of mrustc. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-04-25.
  • GCC 13 and the state of gccrs
    4 projects | /r/rust | 25 Apr 2023
    Mrustc supports Rust 1.54.0 today
  • Any alternate Rust compilers?
    10 projects | /r/rust | 10 Apr 2023
  • Stop Comparing Rust to Old C++
    10 projects | /r/cpp | 31 Jan 2023
    There are three. The official one, mrustc (no borrow checker, but can essentially compile the official rustc) and GCC (can't really compile anything substantial yet). Only rustc is production-ready though.
  • “33% of GStreamer commits are now in Rust”, from the 1.22 release notes
    5 projects | /r/linux | 25 Jan 2023
    Otherwise you could try compiling to C using mrustc and going from there, but as mrustc is really only intended for compiler bootstrapping it won't be a fun experience. Mrustc mostly just assumes that the code you're compiling is valid, so you lose all the advantages of choosing Rust over C in the first place. It also targets x86-64 so the C it emits might need some work before it'll compile.
  • Am I dumb or does rust have a garbage collector?
    4 projects | /r/rust | 9 Jan 2023
    In fact, compiles code without the need for a borrow checker :-)
  • GCC Rust Front-End Cleared For Merging In GCC 13
    2 projects | /r/rust | 7 Dec 2022
    Instead of an independent re-implementation, a small niche implementation whose only purpose is to bootstrap, like mrustc. Since its a much smaller scope, and only intended to work on known correct code, its much simpler and easier to do. It doesnt need to do any type or borrow checking or much of anything, because the rust source is already known to be correct/checked by itself.
    2 projects | /r/rust | 7 Dec 2022
    There is also mrustc
  • Rust front-end approved for merge into GCC
    3 projects | /r/linux | 6 Dec 2022
  • Resources on Lifetimes
    3 projects | /r/rust | 19 Nov 2022
    Lifetime sigils couldn't change the structure of your program, they don't actually affect anything it it, in fact you can remove them from correct program, compile it with mrustc (which ignores lifetime marks) and it would still work.
  • A Brief Interview with Common Lisp Creator Dr. Scott Fahlman
    3 projects | | 12 Nov 2022
    Ideally, what Guix would want is similar to what does for Rust (a compiler, not written in Rust, for Rust).

    So for Dylan, we'd like to have a compiler for Open Dylan, not written in Dylan. (it can also require multiple steps to get up to Open Dylan--that would be fine)

    It's not in the interest of our users to use binary blob compilers for bootstrapping.

    We would also unbundle LLVM, clang and the bdw gc and use the ones from Guix.

What are some alternatives?

When comparing copilot and mrustc you can also consider the following projects:

Obsidian - Obsidian Language Repository

gccrs - GCC Front-End for Rust

gccrs - GCC Front-End for Rust

llvm-cbe - resurrected LLVM "C Backend", with improvements


gcc-rust - a (WIP) Rust frontend for gcc / a gcc backend for rustc

miri - An interpreter for Rust's mid-level intermediate representation

winlamb - A lightweight modern C++11 library for Win32 API, using lambdas to handle Windows messages.

cFS - The Core Flight System (cFS)

rustls - A modern TLS library in Rust

ponyc - Pony is an open-source, actor-model, capabilities-secure, high performance programming language

C-structs - C-Struct Types for Haskell