What sort of mature, open-source libraries do you feel Rust should have but currently lacks?

1. futures-rs

   1 12 5,541 7.5 Rust

   Zero-cost asynchronous programming in Rust

   

   Rust lacks an implementation of ReactiveX. futures/futures-signals seems to be the the ecosystem equivalent but I'm sure there'd be a lot of interest in an actual implementation.

2. CodeRabbit

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3. not-yet-awesome-rust

   2 18 1,362 2.2

   A curated list of Rust code and resources that do NOT exist yet, but would be beneficial to the Rust community.

   

   Aside from that, there's always Not-Yet-Awesome Rust. (Check the issues too. The README is lagging behind.)

4. goreleaser

   3 63 14,373 9.9 Go

   Release engineering, simplified

   

   Coming from go ecosystem I would really like to have something like https://goreleaser.com/ for rust

5. neuronika

   4 19 1,056 0.0 Rust

   Tensors and dynamic neural networks in pure Rust.

   

   If you like autograd you will love neuronika

6. pjproject

   5 7 2,241 9.4 C

   PJSIP project

   

   When I look at stuff like pjsip, I get the impression, it would be huge amount of work. Am I mistaken?

7. viska

   6 4 88 0.0 Rust

   SIP framework built in Rust

   

   That said, there's this, which looks to be on the road already! https://github.com/vasilakisfil/viska

8. rxRust

   7 3 996 4.5 Rust

   Rust implementation of Reactive Extensions.

   

9. SaaSHub

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10. RxRust

    8 1 493 0.0 Rust

    The Reactive Extensions for the Rust Programming Language (by ReactiveX)

    

11. inkwell

    9 16 2,504 6.8 Rust

    It's a New Kind of Wrapper for Exposing LLVM (Safely)

    

    The high level crate is called inkwell.

12. memberlist

    10 9 3,763 5.5 Go

    Golang package for gossip based membership and failure detection

    

    An equivalent of golang's memberlist would be awesome.

13. pixie

    11 23 754 4.1 Nim

    Full-featured 2d graphics library for Nim. (by treeform)

    

    A 2d graphics library like Nim’s pixie

14. crates.io

    12 670 3,122 10.0 Rust

    The Rust package registry

    

    That's a great idea. https://github.com/rust-lang/crates.io/issues/4117

15. LiteDB

    13 11 8,813 8.5 C#

    LiteDB - A .NET NoSQL Document Store in a single data file

    

    A mature NoSQL embedded/flatfile database like LiteDB would be nice. There are some similar Rust libraries but they aren't very close to production ready and the API tends to not be too user friendly. I had trouble finding one of these for a small app I had to write recently.

16. Servo

    14 168 29,745 10.0 Rust

    Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.

    

    Well, I mean considering Rust was developed by Mozilla for Servo

17. node_crunch

    15 15 78 0.0 Rust

    Discontinued Allows to distribute computations across several nodes

    I'm currently working on node_crunch.

18. rfcs

    16 679 6,077 9.5 Markdown

    RFCs for changes to Rust

    

    I wanted to use logging in unit tests but having a setup/teardown for all tests is not yet possible https://github.com/rust-lang/rfcs/issues/1664 The current workaround is doing an init function that you call at the beginning of each tests

19. mun

    17 26 1,955 6.2 Rust

    Source code for the Mun language and runtime.

    

    It's also used by mun.

20. kuchiki

    18 3 466 3.4 Rust

    Discontinued (朽木) HTML/XML tree manipulation library for Rust

    

    Btw did you look at https://github.com/kuchiki-rs/kuchiki?

21. lzma-rs

    19 3 140 5.5 Rust

    An LZMA decoder written in pure Rust

    

    Pure-Rust LZMA decompression exists: https://github.com/gendx/lzma-rs

22. bzip2

    20 2 - -

    Bzip2 upstream started an incremental Rust port, but it seems the upstream maintainers are busy with other projects. Help would be welcome.

23. rust-async-coap

    21 1 49 0.0 Rust

    Discontinued A flexible, asynchronous library for using and serving CoAP resources in Rust.

    

24. Symphonia

    22 30 2,573 4.1 Rust

    Pure Rust multimedia format demuxing, tag reading, and audio decoding library

    

    That's a big undertaking, but https://github.com/pdeljanov/Symphonia is surprisingly far along when it comes to binary decoding, which is the most risky and security-critical part of the entire pipeline.

25. SaaSHub

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