Dev tools · alternatives · 2026

24 alternatives to I made a zero-copy coroutine tracer to find my scheduler's lost wakeups

A cross-language, zero-copy coroutine observability framework based on the cTP shared-memory protocol, utilizing lock-free ring buffers for ultra-low overhead state tracing. - lixiasky-back/coroTracer

This is a debugging tool designed to trace coroutine execution and identify missing wakeups in scheduler implementations. It uses zero-copy techniques to minimize performance overhead during tracing. 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
CodeTracer – A time-traveling debugger implemented in Nim and Rust▲334
Hey! We are presenting CodeTracer - a user-friendly time-traveling debugger designed to support a wide range of programming languages: https://github.com/metacraft-labs/codetracer?tab=readme-ov-f... CodeTracer records the execution of a program into a sharable self-contained trace file. You can load the produced trace files in a GUI environment that allows you to move forward and backward through the execution and to examine the history of all memory locations. They say a picture is worth a thousand words — well, a video is even better! Watch the demo below to see…
2025 · github.com · its alternatives →
2
Neco – Coroutine Library for C▲145
Concurrency library for C (coroutines). Contribute to tidwall/neco development by creating an account on GitHub.
2024 · github.com · its alternatives →
3
A “living” Linux process with no memory▲312
A "living" Linux process with no memory. Contribute to izabera/zeromaps development by creating an account on GitHub.
2020 · github.com · its alternatives →
4
Libconcurrent – Coroutines in C▲91
:copyright: Concurrent Programming Library (Coroutine) for C11 - sharow/libconcurrent
2016 · github.com · its alternatives →
5
Goroutine-analyzer: A visual goroutine stack dump debugging tool▲73
Helps analyze goroutines. Inspired by TDA for Java and goroutine-inspect for golang. - openziti/goroutine-analyzer
2022 · github.com · its alternatives →
6
Asymmetric stackful cross-platform Coroutines in pure C▲39
Single header stackful cross-platform coroutine library in pure C. - edubart/minicoro
2021 · github.com · its alternatives →
7
Code Podcast 3: Concurrency – Event Loop & Coroutines▲54
Concurrency in UIKits, browsers and web servers
2016 · soundcloud.com · its alternatives →
8SA
Sping – An HTTP/TCP latency tool that's easy on the eye▲178
I've frequently found myself using [nvitop](https://github.com/XuehaiPan/nvitop) to diagnose GPU/CPU contention issues. The two best things about it are: - It's easy to install if I can access pip in the container - It makes a compelling screenshot (which helps me communicate with coworkers.) With those two lessons in mind: Here is Sping! Purpose: Help observe and diagnose latency issues at layer 4+ (TCP/HTTP/HTTPS) Two good things about it: - It's easy to install if you have pip. (Available at…
2025 · dseltzer.gitlab.io · 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
Writing a C++20M:N Scheduler from Scratch (EBR, Work-Stealing)▲18
tiny_coro is a lightweight, educational M:N asynchronous runtime written from scratch using C++20 coroutines. It's designed to strip away the complexity of industrial libraries (like Seastar or Folly) to show the core mechanics clearly. Key Technical Features: M:N Scheduling: Maps M coroutines to N kernel threads (Work-Stealing via Chase-Lev deque). Memory Safety: Implements EBR (Epoch-Based Reclamation) to manage memory safely in lock-free structures without GC. Visualizations: I used Manim (the engine behind 3Blue1Brown) to create animations showing exactly how tasks are stolen and…
Feb 2026 · github.com · its alternatives →
11
Moustique – C++14 coroutine-based non-blocking IO on Linux▲68
C++14 high performance non-blocking network IO (based on epoll + boost.context) - matt-42/moustique
2018 · github.com · its alternatives →
12
Time-tracker that helps me with context switches and documentation▲122
Hi HN! I was feeling incredibly frustrated with my struggles in context-switching and writing documentation, so I decided to take action and find a solution. I wrote a simple tool for Alfred and Raycast that helps me be more mindful when switching between tasks, which can even prevent some of those switches. Plus, I can jot down quick notes on each task as I go, making it easier to document everything once I’m finished. This tool is really simple with only 5 commands - tsr, tsn, tsl, tsv, tse tsr writes a new record tsn writes a new note tsl shows you the current task tsv builds a static…
2023 · github.com · its alternatives →
13
O(log n) makes continuous profiling possible▲166
2021 · github.com · its alternatives →
14
Using C++23 <stacktrace> to get proper crash logs in C++ programs▲103
A simple way to output stack traces when a program crashes in C++, using the new C++23 <stacktrace> header - TylerGlaiel/Crashlogs
2023 · github.com · its alternatives →
15
C discrete event SIM w stackful coroutines runs 45x faster than SimPy▲69
Hi all, I have built Cimba, a multithreaded discrete event simulation library in C. Cimba uses POSIX pthread multithreading for parallel execution of multiple simulation trials, while coroutines provide concurrency inside each simulated trial universe. The simulated processes are based on asymmetric stackful coroutines with the context switching hand-coded in assembly. The stackful coroutines make it natural to express agentic behavior by conceptually placing oneself "inside" that process and describing what it does. A process can run in an infinite loop or just act as a one-shot customer…
Feb 2026 · github.com · its alternatives →
16
Goroutine Monitor Powered by eBPF▲75
An eBPF tool monitoring a goroutine. Contribute to keisku/gmon development by creating an account on GitHub.
2024 · github.com · its alternatives →
17
A fast, dependency-free traceroute implementation in pure C▲29
A fast, dependency-free traceroute implementation in pure C. - davidesantangelo/fastrace
Oct 2025 · github.com · its alternatives →
18
A thread hierarchy management library in C▲53
Non-preemptive Thread Hierarchy Manager. Contribute to gueststar/nthm development by creating an account on GitHub.
2020 · github.com · its alternatives →
19
I built a tool to un-dumb Claude Code's CLI output (Local Log Viewer)▲69
Hi HN, I built this because I got tired of the Claude Code CLI hiding details from me. Recent updates have replaced critical output with summaries like "Read 3 files" or "Edited 2 files". To see what actually happened, I was forced to use `--verbose`, which floods the terminal with unreadable JSON and system prompts. I wanted a middle ground: *Full observability without the noise.* `claude-devtools` is a local Electron app that tails the session logs in `~/.claude/` to reconstruct the execution trace in real-time. *Unlike wrappers, it solves the visibility gap in your native…
Feb 2026 · github.com · its alternatives →
20
Debugger that generates video visualizations for algorithm learning▲102
A simple Python debugger and profiler that generates animated visualizations of program flow, useful for algorithm learning. - CCExtractor/vardbg
2020 · github.com · its alternatives →
21AT
A Time-Sharing Scheduling Coroutine Script Language▲22
A script language of time-sharing scheduling coroutine in single thread
2023 · melang.org · its alternatives →
22
Threadprocs – executables sharing one address space (0-copy pointers)▲64
This project launches multiple independent programs into a single shared virtual address space, while still behaving like separate processes (independent binaries, globals, and lifetimes). When threadprocs share their address space, pointers are valid across them with no code changes for well-behaved Linux binaries. Unlike threads, each threadproc is a standalone and semi-isolated process. Unlike dlopen-based plugin systems, threadprocs run traditional executables with a `main()` function. Unlike POSIX processes, pointers remain valid across threadprocs because they share the same address…
Mar 2026 · github.com · its alternatives →
23
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 →
24
A simple, pretty alternative to strace written in Rust▲36
A pretty (simple) alternative to strace. Contribute to JakWai01/lurk development by creating an account on GitHub.
2022 · github.com · its alternatives →

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