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Products that do what I've built a BASIC interpreter with DOS-like features for the web does
Hi everyone, When the pandemic started, I put QuickBASIC in front of my kids and could see them enjoy toying with writing some simple programs. Since then, I've been working on a side project to build a similar experience using modern technologies, with the goal of having a tool to teach the foundations of programming to (my own) kids. This is what EndBASIC is: is a retro-looking, BASIC interpreter with DOS-like features -- built for the web. The environment is designed to be minimalist in an attempt to reproduce the computing experience of the 1980s where the computers were simpler to…
- 1PA
GitHub: https://github.com/mayuropensource/PuffinBASIC BASIC (Beginners' All-purpose Symbolic Instruction Code) is a general-purpose high-level language from the 1960s. PuffinBASIC is an implementation of the BASIC language specification. PuffinBASIC conforms most closely to GWBASIC. The purpose of this implementation is to learn how to write interpreters and resurrect an old programming language to work in modern ecosystem. The interpreter is evolving fast and in near future, I wish to apply modern interpreter building techniques to it. How it works? 1. PuffinBASIC's…
2020
- 2EA
Hello HN! EndBASIC has been featured a few times here before (https://news.ycombinator.com/item?id=31651881, https://news.ycombinator.com/item?id=37495166), but today I want to show you something different that I've been working on for the past 6 months: the EndBOX. The idea is to create a toy-like device that: * boots fast into EndBASIC, * feels playful and hackable, * and is focused purely in experiencing (graphical / game) programming in simple terms. Just you and a BASIC command line---with some DOS touches. You'll find pictures and full details in the…
2025 · endbasic.dev
- 3
I built LunarBasic because I wanted a modern recreation of BlitzBasic from back in the day. I wanted it to have good step debugging features, and I wanted it to compile down to a native binary with no external dependencies. I do know there's an open source BlitzBasic out there but I wanted something simpler and more concise. It does have a "pro" feature set, but for the foreseeable future, anyone joining up will have the pro version in perpetuity (eg I'm not trying to sell anything here). It's early (v0.8.0). Would love feedback on the language design and compiler output, especially from…
13d ago · lunarbasic.com
- 4LP
Hi! I am doing a learning project, attempting to build an imperative language (and interpreter). The end product will be useless for others, I just want to learn and better understand how to build imperative languages. :) If someone else shares this interest and want to give some good hints on good resources I would be grateful. Currently I am looking at an awesome text by Bob Nystrom. All suggestions and tips on resources are most welcome. I am very much a beginner in this, but I find this topic very fascinating. Mail me or post links here! Cheers! You can try a beta version Online at…
2020
- 5IL
I strongly believe that every developer is a teacher and likewise. Every time you are asked to help someone else understand your code, you’ll always be grateful to be able to share your own knowledge with others. Explain Code App is the place you can make this happen! I am eager to hear your thoughts on what I have put together so far. Would love to hear your feedback! Let me know if there are any other features you would like for this site, I’m open for ideas and would love the community feedback. Here is the link: https://www.explaincode.app/
2022
- 6WA
I've been working on a browser-based programming game where you write bots to explore procedurally generated dungeons in any WebAssembly-compatible language. It's like a minimalist roguelike where your character's brain is a program you write. There are pre-made libraries for C, Rust, Zig, Go, and AssemblyScript. The game mechanics are intentionally simple for now, but the challenge comes from building up your bot's understanding of the world from limited local information. Your code needs to handle mapping, pathfinding, and strategy while dealing with monsters and potentially hostile other…
2025 · shaneliesegang.com
- 7IM
heylo! open sourcing a plugin that I've been daily driving for a month. And I promise, I can't go back to vanilla Claude Code. I'm a heavy Claude Code user, and a couple of things kept bugging me. Claude really likes to jump into code. And its responses are too long. I'd skim past walls of text just to find the recommendation. Plan mode helps, but it didn't go deep enough. The questions it asked were still implementation questions, when what I actually needed was alignment on the problem. So I made it stop. Relay is a different output style and two Python hooks. When you describe what you…
Apr 2026 · github.com
- 8LA
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
- 9FI
Hi all! I built FlipJump, a programming language with just 1 opcode, yet capable of any computation. It started with thinking of the idea of the minimalistic language, but it's more than that - I had to set up the whole environment for it: I have written a macro-assembler, an interpreter for the binary, and a very extensive standard library. I also written about ~30 programs in it. Also, the standard library is tested. I also wrote an esolangs page: https://esolangs.org/wiki/FlipJump Tell me what you think!
2023 · github.com
- 10NT
I built a CLI tool that turns codebases and PRs into diagrams so you can quickly understand how things fit together. Originally made it because I couldn't follow my own AI-generated repos. Just shipped a big update: - Switched from D2 to Mermaid for rendering - Tree-sitter AST parsing + agentic flow instead of raw LLM calls. ~50x faster. - Works on any GitHub repo or PR, not just local - Dropped the web frontend, it's just a CLI now - Published as a pip package Still a ton to improve and I'm building fast. Feedback, issues, PRs all welcome.
Feb 2026 · github.com
- 11IB
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
- 12AN
Hello HN ! There’s been a lot of discussions [1,2] on how to build ReBAC [3] with Zanzibar and policy-as-code engines, but we (Permit) also think it’s important to talk about the interfaces on top of these implementations. We just launched a No-Code ReBAC interface - would love to know what you think. besides marrying the benefits of Policy as Code and Policy as Graph, the idea here is to create simple enough interfaces that everyone can use, so developers can set the stage and delegate the rest to others. We used Role-derivation as a concept to simplify a lot of the mechanics what should we…
2023
- 13GA
Hi All, I felt like I was re-inventing the wheel by bolting similar channel architectures onto different Go structs repeatedly so I decided to extract some common types into into one library so that they would be easier to re-use: - oneshot - spsc - spmc - mpsc - mpmc - broadcast - watch The types are inspired by Rust channels so if you're coming from Rust they should feel familiar. So far I'm really enjoying using them but it'd be great to get some external feedback if you have time! https://github.com/amorey/gochan Andres
May 2026 · github.com
- 14TO
Learn how to write Rules Engines with CLIPS in your browser! I found the Tour of Go super useful when learning Go, so I went for something similar for evangelizing the awesomeness of CLIPS. A few things I'm proud of with this project: - No front-end frameworks - Compiled WASM binary; your code isn't sent to a back-end server - Code editor/syntax highlighter written from scratch (that I'm sure you'll find bugs in ;)) This is my first attempt at this, and I'd like to expand on it in the future. Let me know what you think! About CLIPS: CLIPS is a programming language useful for building…
2022 · ryjo.codes
- 15AM
I recently finished a round of tweaks on my barebones mud-server and thought HN might be interested. https://github.com/endgame/MudCore It sits somewhere between socketmud and a full mud like tbamud in that it handles all the socket work and telnet negotiation, but it makes no assumptions about anything else. The other interesting thing is that it can talk to other services using ZeroMQ. I'm interested in reactions, particularly in terms of coding style, documentation quality and so on. It's my main "presentation piece" so far, in that it's some of the first code I actually feel proud to…
2012
- 16CL
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
- 17CCCodr.cc▲8
I finished building Codr.cc last night. Codr is a code snippets sharing website much like pastie or snipt.org, but with a few innovations. First is that it autodetects the language and highlights it accordingly. The second, killer feature, is that it allows you to create snippets from files on your computer. You can select a file using the file browser, or you can drag and drop it into the site. The app will read its contents and create a snippet from it - ready to share. -- Now, I'm a college student in need of some quick cash. Recently I sold wrttn.in rather quickly thanks to HN, and I…
2011
- 18MC
Hey HN, I’ve spent the last 2 years watching my cousin in Morocco struggle to learn Python. Not because he lacked the brains, but because every tutorial assumed fluency in English. Every new term meant 10 tabs of Google Translate. Turns out, he’s not alone. 75% of the world’s population doesn’t speak English, yet 95% of coding resources are English. So we built FIKR: coding courses taught natively in French, Dutch and German (with more languages coming). Yeah, you can find a random YouTube video explaining Python in French or Arabic. But stitching those into a learning path? It doesn't get…
2025 · fikr.net
- 19TA
Hi everyone! I built this because I wanted a little bit more organization around my Claude sessions, worktrees and plans while staying in the terminal and not relying on another SaaS tool. Since it's a command line tool, the added bonus is that Claude can use `td` directly. The td calendar was just a fun add-on but the Claude session stats have been pretty interesting! Let me know what you think!
Apr 2026 · github.com
- 20KY
Hey HN! I wanted to practice "vibe coding" and see how far and fast I can go by only prompting, without actual coding. I decided to make a simple CLI app that scrapes web docs into a single md file (I was annoyed that LLM keeps writing Tailwind 3 code for a Tailwind 4 project). In just a couple of hours, the CLI app was ready! Then iterated on arguments for another couple of hours. Result: https://github.com/vladstudio/web2llm Then I decided to go further and "productize" the CLI by making a web app for it. Another half-day, and the web app is ready!…
2025 · web2llm.dev
- 21IB
After years of struggling with onboarding to new projects, I got tired of spending weeks just trying to grasp the basics of a codebase. The README rarely tells the whole story, and "just read the code" isn't practical for large repos. I built RepoIQ to create personalized learning paths through any GitHub repository. It analyzes the codebase structure, identifies key components, and creates a step-by-step guide tailored to your learning needs.
2025 · repoiq.be
- 22PA
Hey HN, I'm Mo. I've been building Paseo, an open source environment for running Claude Code, Codex, and OpenCode across desktop, mobile, web, and CLI. It started last September as a push-to-talk voice interface for Claude Code. I wanted to talk to an agent while going on walks. Then I wanted to see what it was doing. Then text it when I couldn't talk. Then review diffs, run multiple agents, and manage work across machines. After a lot of iteration, it turned into a broader environment. The basic model is: - A daemon runs on your machine (MacBook, desktop, VPS, etc.). - Clients connect to it…
Mar 2026 · github.com
- 23BA
I started this in January and haven't written a line of the compiler myself. Coding agents write every line; I do design and taste. Wado is a Rust-flavored, GC'd language for WebAssembly Component Model. Try it in the browser, and ask me anything!
Jul 2026 · wado-lang.org
- 24OA
Hi, I’m the technical founder of OneGen. I've been a software engineer for over a decade, but it wasn't until the pandemic that I decided to take a leap of faith and build an innovative solution to designing data models. Most applications & SDKs support more than one platform. And for each platform, software engineers write and maintain the same (or similar) data models. I thought that if I could design data models completely independent of a database or a programming language in a way that allows versioning and collaboration and then generate the model code for whatever the technology stack…
2022 · onegen.io
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