Dev tools · alternatives · 2026

24 alternatives to Await-Tree – Visualize Async Rust Task Execution in Real-Time

Generate accurate and informative tree dumps of asynchronous tasks. - risingwavelabs/await-tree

Await-Tree is a developer tool for visualizing async Rust task execution in real-time. It helps Rust programmers understand and debug asynchronous code by displaying how tasks are running and waiting. The tool is… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Async UI: A Rust UI Library Where Everything is a Future▲173
2022 · wishawa.github.io · 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
The cost of Rust async/await▲15
The cost of Rust async/await. Contribute to jkarneges/rust-async-bench development by creating an account on GitHub.
2020 · github.com · its alternatives →
4
Whalesync▲362
2-way sync Airtable, Webflow, Notion, Bubble, & Postgres
2023 · whalesync.com · its alternatives →
5
Coerce – Actor runtime for Rust using async/await and tokio channels▲155
Actor runtime and distributed systems framework for Rust - LeonHartley/Coerce-rs
2019 · github.com · its alternatives →
6
30ms latency screen sharing in Rust▲353
CLI Native WebRTC Agent in Rust. Contribute to bitwhip/bitwhip development by creating an account on GitHub.
2024 · github.com · its alternatives →
7
Monte Carlo ray tracer in Rust▲168
Monte Carlo ray tracer developed using Rust. Contribute to Dalamar42/rayt development by creating an account on GitHub.
2020 · github.com · its alternatives →
8
Lstr – A modern, interactive tree command written in Rust▲227
Hi HN, (First time poster!) I'm the author of `lstr`. I've always loved the classic Linux `tree` command for its simplicity, but I often found myself wanting more modern features like interactivity and Git integration. So, I decided to build my own version in Rust with a philosophy of being fast, minimalist, and interactive. It was also an excuse to help learn more about Rust\! Here's a quick look at the interactive mode: https://raw.githubusercontent.com/bgreenwell/lstr/main/asset... I've just released v0.2.0 with some features I think this community might find…
2025 · github.com · its alternatives →
9
I wrote a tool in Rust for tracking all allocations in a Linux process▲113
allocscope - a memory tracking tool. Contribute to matt-kimball/allocscope development by creating an account on GitHub.
2023 · github.com · its alternatives →
10
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 →
11
Async tasks in 350 lines of C▲146
Tasks are a primitive for asynchronous programming and an alternative to working with threads directly. Instead of creating a thread, performing work, then waiting on it using synchronization primitives, you only define a unit of work and let a scheduler decide when and where to execute it. The threads that the scheduler uses are created once and reused for many tasks throughout the program's lifetime. In most cases, creating and executing a task requires not even a single syscall and is a significantly faster operation than creating a thread, resulting in lower latency. Furthermore, tasks…
2024 · github.com · its alternatives →
12
Async – Claude code and Linear and GitHub PRs in one opinionated tool▲107
Hi, I’m Mikkel and I’m building Async, an open-sourced developer tool that combines AI coding with task management and code review. What Async does: - Automatically researches coding tasks, asks clarifying questions, then executes code changes in the cloud - Breaks work into reviewable subtasks with stack diffs for easier code review - Handles the full workflow from issue to merged PR without leaving the app Demo here: https://youtu.be/98k42b8GF4s?si=Azf3FIWAbpsXxk3_ I’ve been working as a developer for over a decade now. I’ve tried all sorts of AI tools out there including…
2025 · github.com · its alternatives →
13
Kneden – Transpile ES7 Async/await to ES6 Promise Chains (Babel Plugin)▲76
Transpile ES2017 async/await to vanilla ES6 Promise chains: a Babel plugin - babel/kneden
2016 · github.com · its alternatives →
14
Parallelise pipelines of Python async iterables▲71
Utility function to parallelise pipelines of Python asyncio iterators/generators - michalc/asyncio-buffered-pipeline
2020 · github.com · its alternatives →
15SA
Spart – A Rust library for fast spatial search with Python bindings▲31
Hi everyone, I've made an open-source library for fast spatial search in Rust. It's called Spart, and it currently provides the following features: - Five tree implementations: Quadtree, Octree, Kd-tree, R-tree, and R*-tree - Python bindings (`pyspart` on PyPI) - Fast k-nearest neighbor (kNN) and radius search - Bulk data loading for efficient tree construction Project's GitHub repo: https://github.com/habedi/spart
2025 · its alternatives →
16
Monitor performance for Node.js & Mongodb apps at run time▲12
A node asynchronous process and package monitor. Contribute to AsyncOptics/async-optics development by creating an account on GitHub.
2018 · github.com · its alternatives →
17
WebRTC Nuts and Bolts, A holistic way of understanding how WebRTC runs▲124
Hi HN! I’m so excited to show my first open-source project and first post here. I initially started this project to learn Go language, it is an experimental project. The main goal is to track the adventure of a WebRTC stream from start to finish, by debugging the project or tracking the output at console. By trying out this project, you will deep dive into the steps which are taken while starting up a WebRTC session, and more. It consists of a web UI (TypeScript) and a server back-end (Golang) projects. They can run on Docker containers, in development mode or production mode, you can find…
2022 · github.com · its alternatives →
18
SwimOS Rust – A framework for real-time streaming data applications▲71
2024 · github.com · its alternatives →
19
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 →
20
Asyncpal: Preemptive concurrency and parallelism for sporadic workloads▲28
Hi HN ! Alex here. I'm excited to show you Asyncpal (https://github.com/pyrustic/asyncpal), a Python library for parallelism [1] and preemptive concurrency [2] tailored for sporadic workloads [3]. I've been working on a private project where it would be convenient to have asynchronous versions of some operations without using `async/await` [4]. Besides `async/await`, which represents cooperative concurrency via the `asyncio` package, Python also provides preemptive concurrency through its `threading` package. Additionally, the `concurrent.futures` package builds…
2024 · github.com · its alternatives →
21
A SIMD-accelerated noise library in Rust▲73
SIMD noise library for Rust. Contribute to verpeteren/rust-simd-noise development by creating an account on GitHub.
2018 · github.com · its alternatives →
22
CXXStateTree – A modern C++ library for hierarchical state machines▲48
Hi HN! I've built [CXXStateTree](https://github.com/ZigRazor/CXXStateTree), a modern C++ header-only library to create hierarchical state machines with clean, intuitive APIs. It supports: - Deeply nested states - Entry/exit handlers - State transitions with guards and actions - Asynchronous transitions with `co_await` (C++20 coroutines) - Optional runtime type identification for flexibility It's ideal for complex control logic, embedded systems, games, robotics, and anywhere you'd use a finite state machine. I’d love feedback, use cases, or contributions from the…
2025 · github.com · its alternatives →
23
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 →
24
Pure C Asynchronous HTTP Framework▲80
Asynchronous C networking library with HTTP server, WebSockets, reverse proxy, HTTP/2 gRPC client, TLS and event loop. - Softmotions/iwnet
2022 · github.com · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →