Mojo is now open source!(www.modular.com)

91 pointsby visheshdembla4 hours ago9 comments

SwellJoe2 hours ago
As long as it was proprietary, I could ignore it. Now, I guess I have to learn a little something about it.
setopt2 hours ago
Very exciting. Closed source was one of the main things making me not try it out yet.
Any good resources for getting started? And anything on doing NumPy/SciPy-like stuff in it?
- totalperspectiv2 hours ago
  https://mojolang.org is the best spot for getting started generally. numojo is the closest thing to numpy right now. You can check out more packages here: https://github.com/modular/modular-community/tree/main/recip...
- MohamedMabrouk2 hours ago
  NuMojo is the closest thing in the ecosystem to numpy and the final aim is offer numpy-like experience. https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo
  - vovavili2 hours ago
    Can't you just use Numpy directly in Mojo?
    MohamedMabrouk2 hours ago
    you can but through a python interpreter in the mojo process so you get the same numpy speed with mojo<->ptyhon interop overhead. NuMojo is native and also is now starting to support features that numpy can't really do like native GPU execution.
    vovavili19 minutes ago
    I wonder if the Python-to-Mojo overhead is significant enough where language-native bindings make more sense. I'd be interested in seeing some benchmarks.
mrbonner2 hours ago
So I think the permissive license like Apache 2 without opening up for upstream contributions would be the way of future open source development. In a very similar way of SQLite. It definitely will help shield off a bunch of AI generated contributions first and foremost and then, aligning mental model with the human contributions with Mojo leader team.
totalperspectiv4 hours ago
This is really exciting. I've been using Mojo off and on for side projects over the last two years.
(copying from some previous Mojo threads) It's got an ownership system adjacent to Rust, comptime similar to Zig, and a first class dependent type system. Even more exciting, is that uses LLVM (to the best of my understanding) in some novel ways and for more optimizations.
- dlahoda2 hours ago
  Hm, in docs they say that dependent type system is not first class seems.
  Is it even dependent? More like refinement types, which seems will be in Rust too.Also HN recently mentioned Rust building similar llvm based integration with GPU.
  But compared with Python, Julia, Matlab, R, Rust, C, C++ - Mojo feel relief for working with numerics.
melodyogonna3 hours ago
Such an exciting time for Mojo, I don't think people realize just yet the innovation being brought to fore here.
- vovavili3 hours ago
  The innovative potential of Mojo would be constrained to relatively niche and senior dev circles until they get a Windows release, which probably won't happen anytime soon. Python keeps the throne for now.
  - pjmlp23 minutes ago
    And Julia as well.
  - dloss2 hours ago
    They announced a partnership with Microsoft today.
    vovavili2 hours ago
    That's quite promising - https://www.modular.com/blog/modcon-announcements#:~:text=Wi...
melodyogonna4 hours ago
Related post with relevant pr: https://news.ycombinator.com/item?id=49347777
ModernMech36 minutes ago
"Modular Confidential (obviously), May 14, 2022"
lol, feels like espionage
https://github.com/modular/modular/blob/main/KGEN/docs/Desig...
Compiler walkthrough
https://github.com/modular/modular/blob/main/KGEN/docs/MojoC...
ChrisArchitect4 hours ago
Related:
Mojo 1.0
https://news.ycombinator.com/item?id=49261128
Lichtso4 hours ago
Technically soruce available now with the promise of accepting contributions (thus becoming fully open source) early next year. But since it is an Apache 2 license (like the rest of the LLVM project) you are already allowed to fork and contribute to your own fork right now, just no upstreaming.
For many the closed source nature of the compiler was a knock-out criterion. We will see if Mojo can gain traction now or if it has missed its window of opportunity.
- cube22223 hours ago
  It’s open source under the Apache 2 license, not source available.
  Accepting contributions is not required to be open source.
  SQLite doesn’t accept contributions from random people either [0] (though you could argue being public domain isn’t being open source).
  Anyway, this is great, I was waiting for this to take the language for a spin! Congrats to the Mojo team!
  [0]: https://simonwillison.net/2025/Dec/29/copyright-release/
- SwellJoe2 hours ago
  You're just making up your own definitions of things.
  If the complete source is available and distributable under an OSI-approved license, it is absolutely Open Source. Accepting outside contributions is nowhere in the definition of Open Source.
- fluffybucktsnek3 hours ago
  Technically, the criteria for open source is freedom to freely distribute and modify the source code, not to upstream changes. That's a different for thing.
  https://opensource.org/osd