Dev tools · alternatives · 2026

24 alternatives to An event loop for asyncio written in Rust

actually, nothing special about this implementation. just another event loop written in rust for educational purposes and joy in tests it shows seamless migration from uvloop for my scraping framework https://github.com/BitingSnakes/silkworm with APIs (fastapi) it shows only one advantage: better p99, uvloop is faster about 10-20% in the synthetic run currently, i am forking on the win branch to give it windows support that uvloop lacks

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Bringing multithreading to Python's async event loop▲82
This project explores the integration of multithreading into the asyncio event loop in Python. While this was initially built with enhancing CPU utilization for FastAPI servers in mind, the approach can be used with more general async programs too. If you’re interested in diving deeper into the details, I’ve written a blog post about it here: https://www.neilbotelho.com/blog/multithreaded-async.html
2024 · github.com · its alternatives →
2
Whirlwind – Async concurrent hashmap for Rust▲140
Hey HN, this is Will and David from Fortress (https://news.ycombinator.com/item?id=41426998). We use a lot of async Rust internally, and created this library out of a need for an async-aware concurrent hashmap since there weren’t many available in the Rust ecosystem. Whirlwind is a sharded HashMap with a fully asynchronous API. Just as dashmap is a replacement for std::sync::RwLock, whirlwind aims to be a replacement for tokio::sync::RwLock. It has a similar design and performance characteristics to dashmap, but seems to perform better in read-heavy workloads with tokio's…
2024 · github.com · its alternatives →
3
Async UI: A Rust UI Library Where Everything is a Future▲173
2022 · wishawa.github.io · its alternatives →
4
Performant intracontinental public transport routing in Rust▲167
I made a public transport route planning program that's capable of planning journeys across Europe or North America! There's only one other FOSS project I know of (MOTIS/Transitous) that can do transit routing at this scale, and in the testing I've performed mine is about 50x faster. I've spent a few weeks on this project now and it's getting to the point where I can show it off, but the API responses need a lot of work before they're usable for any downstream application. Example query (Berlin to Barcelona):…
2024 · github.com · its alternatives →
5
Rusteerio by Context.dev▲71
Keep your Cheerio code. Make it faster.
3d ago · github.com · its alternatives →
6
Python 3.5 Async Web Crawler Example▲28
Python3.5 async crawler example with aiohttp and asyncio - mehmetkose/tangrowth
2016 · github.com · its alternatives →
7
HTTP/2 Python-Asyncio Web Microframework▲173
2018 · gitlab.com · its alternatives →
8
Zaplib – Speed up your webapp with Rust+Wasm▲175
2022 · zaplib.com · its alternatives →
9
Robyn – A fast, extensible async Python web server with a Rust runtime▲103
Robyn is a Super Fast Async Python Web Framework with a Rust runtime. - sparckles/Robyn
2023 · github.com · its alternatives →
10
Chromiumoxid – An Async Headless Chrome API in Rust▲127
Chrome Devtools Protocol rust API. Contribute to mattsse/chromiumoxide development by creating an account on GitHub.
2020 · github.com · its alternatives →
11AF
Apache Fory Rust – 10-20x faster serialization than JSON/Protobuf▲67
Serialization framework with some interesting numbers: 10-20x faster on nested objects than json/protobuf. Technical approach: compile-time codegen (no reflection), compact binary protocol with meta-packing, little-endian layout optimized for modern CPUs. Unique features that other fast serializers don't have: - Cross-language without IDL files (Rust ↔ Python/Java/Go) - Trait object serialization (Box) - Automatic circular reference handling - Schema evolution without coordination Happy to discuss design trade-offs. Benchmarks:…
Oct 2025 · fory.apache.org · its alternatives →
12
rallyup – Lightweight Wake-on-LAN Scheduler▲141
Hi HN, I’ve wanted a simple solution to handle Wake-on-LAN sequences for my home and work labs to boot up servers in the right order. I was already dabbling in Rust and thought this would be an interesting project to dive deeper and see if it could work well for this kind of network tool. The result is rallyup. rallyup lets you set up server dependencies in a YAML file, so each service (e.g., firewalls, storage, VM hosts) comes online in the right order. It verifies each server’s status before moving to the next. Features: - Dependency-based WOL with VLAN support - Built-in health checks…
2024 · github.com · its alternatives →
13
Python can make 3M+ WebSocket keys per second▲83
:zap: Optimizing Python code by implementing a C++ extension - szabolcsdombi/optimization-demo
2023 · github.com · its alternatives →
14
Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)▲151
forkrun is the culmination of a 10-year-long journey focused on "how to make shell parallelization fast". What started as a standard "fork jobs in a loop" has turned into a lock-free, CAS-retry-loop-free, SIMD-accelerated, self-tuning, NUMA aware shell-based stream parallelization engine that is (mostly) a drop-in replacement for xargs -P and GNU parallel. On my 14-core/28-thread i9-7940x, forkrun achieves: * 200,000+ batch dispatches/sec (vs ~500 for GNU Parallel) * ~95–99% CPU utilization across all 28 logical cores, even when the workload is non-existant (bash no-ops / `:`)…
Mar 2026 · github.com · its alternatives →
15
SwimOS Rust – A framework for real-time streaming data applications▲71
2024 · github.com · its alternatives →
16
Sandboxing untrusted code using WebAssembly▲76
Hi everyone, I built a runtime to isolate untrusted code using wasm sandboxes. Basically, it protects your host system from problems that untrusted code can cause. We’ve had a great discussion about sandboxing in Python lately that elaborates a bit more on the problem [1]. In TypeScript, wasm integration is even more natural thanks to the close proximity between both ecosystems. The core is built in Rust. On top of that, I use WASI 0.2 via wasmtime and the component model, along with custom SDKs that keep things as idiomatic as possible. For example, in Python we have a simple decorator:…
Feb 2026 · github.com · its alternatives →
17
Rust macro utility for batching expensive async operations▲28
rust macro util for batching expensive operations. Contribute to hackermondev/batched development by creating an account on GitHub.
2025 · github.com · its alternatives →
18AC
Asdf Clone Written in Rust▲79
I think that asdf (https://asdf-vm.com) was a great idea for a project. It helps consolidate installing and running different programming languages into a similar UX. It also is built with a plugin interface that makes it easy to build support for new languages. However it is so slow. I was just testing `node -v` and it was taking ~900ms. That kind of overhead is completely unusable. My shell prompt uses runtimes inside of it for various things so this effectively makes every command take multiple seconds to complete. So I rebuilt it in Rust but using the same plugin ecosystem so…
2023 · its alternatives →
19
MCP-stama – An ultra-fast Rust MCP server with no dependencies▲73
An ultra-fast, single-binary MCP server written in Rust as a lightweight alternative to Node.js/Python. - StamManif/mcp-stama
Aug 2026 · github.com · its alternatives →
20
Await-Tree – Visualize Async Rust Task Execution in Real-Time▲28
Generate accurate and informative tree dumps of asynchronous tasks. - risingwavelabs/await-tree
2025 · github.com · its alternatives →
21
a Rust ray tracer that runs on any GPU – even in the browser▲95
I’ve been experimenting with Rust lately and wanted a project that would help me explore some of its lower-level and performance-oriented features. Inspired by Sebastian Lague’s videos, I decided to implement my own ray tracer from scratch. The initial goal was just to render a simple 3D scene in the browser at a reasonable frame rate. It evolved into a small renderer that can: • Run locally or on the web using wgpu and WebAssembly • Perform mesh rendering with a Bounding Volume Hierarchy (BVH) for acceleration • Simulate both direct and indirect illumination for photorealistic results • Be…
Nov 2025 · github.com · its alternatives →
22
Second State VM▲78
High performance secure & portable Rust functions in Node.js
2020 · secondstate.io · its alternatives →
23
Unbug – Rust macros for programmatically invoking breakpoints▲96
This project is inspired by some of the asserts in Unreal engine. Due to reliance on core_intrinsics it is necessary to develop using nightly Rust, but there are stubs in place so a production build will not require nightly. I recently released version 0.2 which includes no_std support and adds optional log message arguments to the ensure macro.
2024 · github.com · its alternatives →
24
An async traceroute(1) implementation in Rust▲9
I wrote a minimal traceroute(1) clone that leans on asynchrony to reduce the time spent tracing a route. Underneath, it uses ICMP to do its job. The plan is to add support for UDP tracing and a path maximum transmission unit discovery mechanism. Comments and suggestions are welcome!
2022 · github.com · its alternatives →

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