Alternatives
Products that do what Dap-mux – Connect your editor and REPL to the same debug session does
I have been coding over four decades, in many languages, on many projects (including Firefox, Final Cut Pro, the Newton, and Fullwrite Professional if you can remember that far back; all these using my "dead-name"). I wrote something small and simple to scratch an itch. It's the UNIX philosophy: small "one-trick ponies", each *really* good at their one trick, then the user can hook them together to solve actual problems. I'm a CLI guy, and for almost everything, I already have this. But not for debugging. The itch I scratched was the connector that enables this philosophy for debugging. That…
- 1
- 2
- 3
- 4EC
I participated in the Nvidia + Vercel 2 hour hackathon in SF tonight, and built something I've wanted, but hadn't tried building. I implemented an MCP Server and VS Code extension to allow Claude Desktop to place breakpoints, step through code, and execute expressions (assuming language support). So you can ask it a question that requires actually stepping through the code and now it can actually do that - check values for you, etc. It's _definitely_ not perfect. Have improvements? Please make a PR!
2025 · github.com
- 5IV
So, I've never written a line of Rust in my life. I wouldn't know an `&mut this` from a mutandis. But I saw a tweet about a month ago that said, in this new era of AI, you'd be able to just take a library that you love, throw a TUI around it, and call it an app. So I spent about 200 bucks last month, here's what I came up with: Imbolc is a DAW that runs entirely in your terminal. It talks to scsynth over OSC and ships 58 instruments and 39 effects. VSTs are a work in progress, also GarageBand loops if you want to recreate "Umbrella". The codebase is about 60k? lines of Rust across 5 crates,…
Feb 2026 · github.com
- 6
I recently encountered a situation where JetBrains IDEs weren't working for a project, and I wasn't even sure I wanted to keep paying the yearly fee. I decided to de-IDE myself and as part of it I decided to look at my options. The more I saw of Emacs the more interested I got. However using the Doom emacs distribution kind of threw me in the deep end without actually understanding how Emacs operates. I was lost and bounced off quick. I decided to take the approach of starting with vanilla Emacs and trying to get it to work for me as an IDE one step at a time. This post was me documenting…
13d ago · github.com
- 7TC
Hi HN, I'm thrilled to share with you think, a command-line tool that I developed while diving back into the programming scene. For the past few years, my focus had shifted from hands-on programming to managerial roles, my last one being at Affirm (I started Affirm's Polish office). However, I recently left my job to revisit my passion for coding and see if I could still write code that works. Not to mention that with what is currently going on in AI if you are a developer this probably the best possible time for a sabbatical in human history :) My first attempt was with LangChain, but I…
2023 · github.com
- 8MS
Hello HN community ! Finally I have a "Show HN" post. I'm bootstrapping my first Mac app, it's a standalone Xdebug PHP debugger. It aims to help any PHP developers out there who don't want to use IDE to debug code. My app it's slimmer, faster to load and easy to work and setup :) Hope you guys like it Site: http://codebugapp.com/
2012
- 9DC
I built this tool a couple days ago to temporarily hide your prints & comments. I wanted to focus on the core logic without having to constantly delete/add prints and comments. Lmk if you like it ;)
2024 · marketplace.visualstudio.com
- 10IB
The main goal of this was to be able to not just run multiple Claude Code sessions at once, but actually manage them and keep track of what I was doing. Sometimes this is multiple attempts on the same task, sometimes I work several tasks at once. Really I was just sick of twiddling my thumbs waiting for the coding agent to finish, and I wanted it to be easy to work on/review/test another change while I waited.
2025 · github.com
- 11IM
I am excited to introduce my solo project, a platform built with the frontend development community in mind. It's an interactive environment aimed at refining debugging skills through exposure to real-world bugs. This project stems from the need for a hands-on, practical method of learning to debug. The site features a variety of intentional bugs for users to solve, mirroring the types of challenges faced in professional settings. Over the coming weeks, I will be adding many more exercises and new features to enhance your learning experience further. Check out CodeMender at…
2024 · codemender.io
- 12DB
My partner reviews a lot of P&IDs (piping and instrumentation diagrams) and the adjacent files involved (excel, docx, pdfs, acd/l5x, etc). In his company, these are usually done in Bluebeam. It's really hard to see the diff + keep track of all the revisions resulted by these iterations. They end up storing files like "rev3_final_redlined.pdf". We've been looking for something close to Github to do these reviews, but haven't found one easy enough for folks with no CLI experience to understand and use (happy to check out more tools if you know any). So I built withkord.com to help with…
Aug 2026 · withkord.com
- 13CL
Hey HN, this is a side-project I've been working on for my senior year independent work in CS. Would appreciate any comments or feedback. www.aperator.com Thanks!
2012
- 14SC
Sometimes, I come across a handy tool or a frustrating issue in my daily workflow. If it's both, I might write a small program in a language I’m comfortable with to solve it. Except for ELisp... For some reason, it annoyed me so much that I couldn't stop writing in it. First, it was simple config tweaks, then small patches, and before I knew it, I was enjoying it. I ended up creating a few packages, and of course, with each one, I’d hit a new problem, push the old one aside, and start fresh. Just hoping I don’t forget to go back to it later. Well, I didn't and I'm slowly revisiting,…
2024
- 15AA
I’ve had this idea for a new code editor chord grammar bouncing around in my head for over 2 years, and now I can finally release v0.1 of ane. You can run it one-shot from scripts or agents (`ane exec —chord…`) or use its full-on TUI editor. ane is pure Rust, and integrates tree-sitter and LSP to provide a pleasant and predictable terminal code editing experience. I’d love folks to try it out and give feedback! Thanks :)
May 2026 · github.com
- 16MP
My weekly(ish) video logs tracking my progress of building a completely sound statically typed language and structural editor. The motivation is to make lots of invalid programs unrepresentable.
2022 · petersaxton.uk
- 17LA
Hello HN, I am building a devtool to understand existing codebases. The idea originates from my time at big tech as well as various attempts to get involved in open source projects. When I was in college I wanted to improve my coding skills by contributing to opensource projects. I would pickup a bug or feature request but I always found myself stuck at the very first step. I did not understood where and how to begin contributing. I once submitted a patch in firefox which was labeled "Good first issue" but that was still very handheld. The assigner told me exactly which files I need to…
2024 · lucidcode.ai
- 18IB
Hi HN, I've been working on this for a while and it was hard to decide when to stop, either on the way information is presented or when to stop with adding entries. It's not meant as a blog, but rather as a reference that keeps growing. Link: https://thehardparts.dev Currently I've created 4 main section: - Failure Modes: ways project go wrong - Red Flags: early signals that are worth taking seriously - Tech Decisions: common and not so common trade-offs for hard choices - Playbooks - guided approach for situations that repeat I've also focused on creating links between them to…
Apr 2026 · thehardparts.dev
- 19PR
Hi HN, While building RAG agents, I noticed a lot of token budget was wasted on formatting overhead (HTML tags, JSON structure, whitespace). Existing solutions felt too heavy (often requiring torch/transformers), so I wrote this lightweight, zero-dependency library to solve it. It includes strategies for context packing, PII redaction, and tool output compression. Benchmarks show it can save ~15% of tokens with negligible latency overhead (<0.5ms). Happy to answer any questions!
Dec 2025 · github.com
- 20DA
I'd like to share a new workbench I've been working on called DiffCAD. Coming from a software engineering background, not having the ability to properly diff my CAD model changes was driving me crazy. This project scratches my own itch, and maybe someone elses', too! I'm open to feedback, ideas, and contributions. Cheers!
May 2026 · github.com
- 21LL
I've been developing SpiderFoot (an OSINT/recon tool) for 10 years now, so wanted to share my story and try to distill some lessons learned in the hope they might be helpful to others here who might be considering writing/open-sourcing their own tools. Here's the post: https://medium.com/@micallst/lessons-learned-from-my-10-year-open-source-project-4a4c8c2b4f64 And the repo if you want to check it out: https://github.com/smicallef/spiderfoot -- TL;DR version of lessons from the post.. Lesson 1: Writing open source software can be very…
2022
- 22CP
Hi HN! I've never posted anything on here before, but this project was too fun to pass up. I've been learning a lot about agents lately, and wanted to see if I could replicate some of the results of Windsurf and Cursor. Generally I love these tools, but when you're stuck behind an "enterprise" firewall, they don't work as well. This sad state of affairs motivated me to understand SWE agents more. Does it work? Yes. Is it as good as Cursor and Windsurf? Not quite, but it's pretty darn close, depending on the model you use. I'm lacking a few features like semantic indexing, MCP support, but…
2025 · github.com
- 23IL
VSCode was my daily driver for years, but once I started running several coding agents across multiple projects at the same time, it got in the way. One workspace with terminals in the bottom tray, no idea which agent was doing what and I found myself needing all the code editing tools less and less. So I built my own IDE around that workflow. Terminals are a first-class citizen, every project stays alive in the background with visual statuses. Close the workspace and come back weeks later, everything is still in its place. I've been using it for weeks and it's a big productivity boost. The…
Jul 2026 · github.com
- 24DD
2025 · blog.kuzudb.com
Ranked by how close each launch is in meaning, then by votes. Refine with a description →