HACKER Q&A
📣 totaldude87

What apps are you building?


I’m curious what people here are working on lately.

What are you building right now?

Apps, tools, experiments, weird side projects, anything. Would love to see what folks are making.


  👤 alquinsmiles Accepted Answer ✓
I have created a whitelist only email service at Supertopsecret.com. Only addresses the user provides can get into the inbox. All else is blocked. Landing page is a spy theme and would be interested if people think it's too sarcastic/off putting. Thank you. Detailed comments can go to hq@supertopsecret.com (which I set up to be non-whitelist only).

👤 aiagenta2z
We are building an AI Agent Designer web app-Craftsman Agent which can turn prompts into ready to use 3D/2D design, such as a Tesla car wrap, a Perler Beads Pattern, etc. You can use "Generate a blue and white yacht", "Generate a Argentina Football Team Theme Car wrap or Perler Beads Pattern" to generate lego 3D blueprint, step by step assembly charts, etc.

👤 gulugawa
I built a mini frontend framework with components, state management and backend data fetching.

It is designed to have a minimal learning curve, and has faster performance than React due to the use of web components.


👤 maguay
I'm building a writing app for perfectionists: Reproof (https://reproof.app/)

I've been a writer for over a decade and a half. I'll often rewrite intros and other sections a half-dozen times, or cut quotes and bits that don't quite fit, only later to wonder if an earlier take was better.

I built Reproof to solve this. Every paragraph is versioned, so you can rewrite paragraphs and switch between the takes to see which sounds better. There's a clipping pane on the bottom, to cut things and save them just in case you find a spot to include them later. And there are a bunch of writer-focused features: Write and copy text in either rich text or Markdown, open two documents side-by-side and find/replace between both, selective find/replace to edit only some of the results, command palette to search across everything, daily versioned backups, and more. And lots more to come.

Nearly every other writing app is a digital piece of paper with linear paragraphs. Reproof instead lets you explore the best way to write what you're trying to say.


👤 freakynit
For my Indian folks, I have just yesterday launched 100% free railway API. Truly free, no strings attached.

The rate-limits are good enough that you can build automations on top. It also comes with MCP server.

https://traintrack.stupidlabs.lol/

The API is open to all, not just in India. Feel free to use.


👤 dabinat
Working on a rewrite of my free app, Post Haste. The idea is that you setup a template folder structure and configure project files and such as you like, then when you want to create a new project you enter some parameters like project name and ID and it copies the structure across.

There’s more to it than that of course, and you can use variables, folder breaks, etc, to fully customize how it sets up the project.

It’s great for ensuring consistency in project structures, which is especially useful in a larger company with a lot of employees. It was originally created for video editors but it’s agnostic and can be used for any type of project.

Existing app is here: https://www.digitalrebellion.com/posthaste


👤 vunderba
I’m working on a 100% faithful adaptation of both QBasic and QuickBasic 4.5 that runs entirely in the browser running on a virtual CPU and hardware abstraction layer. It’s a love letter to everyone who learned to program on Microsoft’s BASIC interpreters in the ’80s and early ’90s. The whole project is fully open source.

The best compliment I’ve received so far is from friends who grew up in the same era I did: when I fullscreen the browser, a few of them assumed it was a virtual machine running the real thing.

I’ve tried hard to capture the spirit of what made QBasic great: built-in IDE help, an interactive, line-by-line interpretive environment, no compilation step, and a fast feedback loop. So far, every program you write in the simulator can be taken to an old 386 and will run exactly the same.

It started out as a bit of a mad scientist experiment, but I’ve already put close to a hundred hours into it.

Silly video demo (take a PEEK - see what I did there?)

https://mordenstar.com/share/qbasic-core-demos


👤 bzhang33
Working on Personal Tutor, an open-source skill that gives your coding agent a teaching toolkit for building structured, interactive courses that persist locally across sessions. Courses can include lessons, diagrams, quizzes, simulations, runnable coding exercises, glossaries, flashcards, and more.

This project originated out of two complaints that I have with trying to learn with AI: first, it becomes increasingly difficult to revisit previous ideas or concepts as sessions grow longer and second, richer learning experiences are often flattened into a wall of text.

Personal Tutor keeps course, progress, quiz results, coding attempts, etc. together locally so that the agent can see this history when building upon a course. It also ships a library of teaching components, SDK, CLI, and local UI so that agents can spend more tokens on teaching quality rather than component generation.

Would love to hear any feedback!

https://github.com/briannajzhang/personal-tutor