I made a data analysis app for the team before. Now there are AI and app like Dify so everyone can make apps easily🎉

bad_BANANA is the pet project I always return to — a personal adversarial-ML framework I’ve built up over time. It runs controlled experiments (evasion, poisoning, transferability), generates synthetic datasets, and produces reproducible reports. Every few months I revisit it, upgrade something, or add a new idea. It’s the tool that’s grown alongside my own learning.

sz - A simple tool to find size of binaries, I use it a lot.
link to repo

• Free background removal tool that works well enough, scans given directories for images and cleans backgrounds.
• Cross-platform killing process by port utility github.com/radarsu/kill-process-on....
• CLI collecting metadata about code from special comments.
• Unified consumer, validator and transformer of configuration passed by various inputs - env variables, process variables, flags for Node.js apps.

I worked on a library management Software and I built myself a small script that analyzes a backup file and checks for all sorts of constraints and pulls a lot of stats. Like how many Users lent a book that month and stuff like that.

Really cool prompt! I built a small CLI tool that helps me track and categorize my reading progress—a sort of personal “reading dashboard.” It’s not fancy, but it saves me from losing track of articles, books, and blog posts. I’ve added simple tags, and it syncs with a local file, so it’s portable. What about you—what made you start building your tool? vignesh156.aiskills.in/

What a fantastic question! 👏 I think the most interesting tools are the ones we build for ourselves—they don’t have to be polished or “product‑ready.”

For me personally, I made a small CLI script that scans my local project folders, looks for TODO comments, and generates a list of all pending tasks (grouped by file). I know there are big issue trackers out there, but this simple script helps me stay on top of my own little code‑cleanup goals without opening Jira or Trello every time.

It’s not the prettiest, but it serves exactly what I need. And honestly, every time I run it, it feels like a little win.

I can never stick to building for myself and not thinking about distributing 😭

I built a very basic CRM type of web app to track my freelance job applications so that I don't forget github.com/reyesvicente/job_tracker

Our company has a strict attendance system, so… I wrote a program for myself that shows a big “Clock-out reminder” every time it’s time to get off work.

For fun a friend and I built a Pomodoro Timer as a Progressive Web Application.

I built Piper, a tool that allows me to map and migrate no-relational data to Postgres with an okay-looking UI.

It was strictly made for my former company's usage because during that time, they were painfully and manually migrating data from dynamoDB to Postgres.

but now I'm trying to re-write it to give it more flexibility, allowing a wide range of migration not limited to just Postgres.

I built TabFolio for myself, super ugly at start 😅
But I thought other people may find it useful too, so I tried to make a decent design and publish it 😁

GOOD

A subsonic proxy and a music player app, which in combination, behave like I want music player to behave. No more Spotify, no more black-box-algorithm, and I support artists by buying music.

Most of the tools I created, I did for myself:

— just scrolls and expands collapsed sections

— meta ads analyzer

— parser

— another parser

— one more parser

— sequential link clicker

— bulk tech stack analyzer, up to 1,000 URLs/hour

An app that monitors my sitting habits while I work and reminds me to get up and move, it uses my mac camera and tracks how long I've been seated and sends me alerts via telegram to get up. I used @vladmandic/face-api

I built cellar, a cli to make and manage proton prefixes for my games. Didn't want to deal with steam and adding non steam games.

I built a Claude Code but for legacy code modernization as part of my thesis research. Feel free to support: L2M

A Model Context Protocol server that lets my AI write code, read docs, control my inference server, log semantic memory for persistence and just generally tell me I'm a nuff nuff.

I build github.com/AuthOneID/auth-one because existing tools are too complex or lack the features I need.

I've spent my career watching Product Managers (including myself) spend weeks writing user stories, acceptance criteria, and technical specs. After building several automations as part of my personal workflow, I decided to package them into a single product with shared context to be able to drive all my product decisions off of.
The tool simply takes the Product idea as input, and outputs Personas, Features, User stories, acceptance criteria, database schema, sitemap, page structure, wireframes, tests, and more to come. Better yet, it has full contextual awareness across the project so any changes are cascaded to relevant related entities. After finding some personal success building with it, I decided to package into a SaaS product which I'm currently still building (VibeMap.ai), but hoping it could help others as much as it helped me once it's done.

Here's mine:

I Built Offday.app — A Small Tool That Helps You Plan Longer Holidays with Fewer Leave Days

I built Textideo simply because I was too lazy to open Premiere Pro for every single blog post update. I just wanted to turn my text into a quick video automatically. It started as a personal automation script to save my weekends, and eventually grew into a full product!

I built Webfoundry, a complete visual app builder that boosts my productivity immensely but no one seems to care: webfoundry.app/ (no account creation necessary). Here's a video I recorded for another community showing a bunch of its features: vimeo.com/manage/videos/1139210368

Also MEATEOR, a Grindr alternative I just posted here: dev.to/guiprav2/a-completely-p2p-g... (really hoping this one takes off because Grindr freaking sucks and don't get me started on Planet Romeo).

For myself I built this to manage docker locally: github.com/malwarebo/dockstat/

An ongoing work for community, I am building this: github.com/malwarebo/conductor

Because I have the need for image to prompt, I wrote a tool myself, and the main functions are currently free