Ledger Room: I built a local invoice sorter, then measured exactly what the privacy costs
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built Ledger turns a folder of invoices and receipts…
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TenderLens: Turning WhatsApp & Gemma into an Autonomous Bid Assistant for Contractors
This article is submitted for the **Hacktoberfest Open-Source AI Challenge: Week 2 (Side Hustle) . Target Categories: **Overall Winner , **Best Use…
We made it on a leaderboard we'd stopped watching
A short update to the LongMemEval-V2 part of my last benchmark post . Part of The Organism Files. In August we kept checking the LongMemEval-V2 lead…
TapWait AI: Smarter Restaurant Operations and Marketing with Open-Weight AI
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built Every restaurant has two important jobs: delive…
The inspection machine was working. The order was still late. So I built FactoryGraph.
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle . What I Built A machine breaks down at eight in the morning…
RevanScript (RVS) Programming Language (RVS-Lang)
Introducing RevanScript (RVS) — My Own Programming Language Written in C Hello, developers! My name is Revan Babayev, and I am the creator and prima…
I'm building an open-source platform for your database, API, auth and apps
I'm Duc. Since May 2025 I've been building Excalibase on nights and weekends, next to my day job. It started as a GraphQL engine for Postgres, becau…
How I built read-only-by-default scheduled jobs for my AI companion: prompt hardening, a 500-char bound, and untrusted history
How I built read-only-by-default scheduled jobs for my AI companion: prompt hardening, a 500-char bound, and untrusted history My desktop companion…
Building BIS SmartAssist (MANAKAI): Zero-Hallucination AI for 23,800+ Indian Standards with OpenAI Codex
🇮🇳 The Challenge: Why Generic LLMs Fail at Regulatory Compliance When an MSME manufacturer, startup founder, or laboratory engineer asks an AI: "Wha…
Triglav: orchestrating Claude Code and Codex agents for long-running work and layered review
AI coding agents can write code. Longer tasks still need coordination and quality control. Someone has to keep track of the objective, settle the op…
The Math Behind Weighted Grades, in Next.js
I built a free grade calculator with Next.js, and the part that surprised me most was how little of it is framework code. Nearly all of the logic is…
What broke when AI agents started paying each other
I run MusedIn, a job network where AI agents apply to jobs, deliver, and get re-checked by other agents before the poster pays. After a few weeks wi…
I measured my AI search. The numbers were humbling 📏
In part 1 I built Because I liked : you describe something you loved and why , and it finds films, shows, books and games that match the why , then…
Can decision models like Jev and Laya route a coding agent?
We plugged Laya, a 421M-parameter decision model, into our coding agents as a model router. The plumbing worked in about 112 ms. Deciding when a big…
I made Prism, a free and open-source alternative to IDM (Internet Download Manager)
Hey! I'm 16 and I've been building Prism, a download manager like IDM. It's free, open source (MIT), and has no ads and no account. What it does: Sp…
How I built keyless OAuth sign-in for my AI companion: PKCE, a single-use loopback callback, and a token that never touches disk
How I built keyless OAuth sign-in for my AI companion: PKCE, a single-use loopback callback, and a token that never touches disk Ankita is my open-s…
I Built a Bilingual "Mini-Uber" for My Dad's Escalade Business
I Built a Bilingual "Mini-Uber" for My Dad's Escalade Business My dad drives a Cadillac Escalade. He's licensed in California (TCP permit — the real…
Ankita v2.6.0: chat through your own ChatGPT tab — no API key, no per-token billing
Every time I've wired an AI companion up to a model, the same bill shows up somewhere: a per-token API key, a cloud sandbox rental, or a second app…
Reading a locked Pet Index: verifying 199 Roblox pets without unlocking them
Steal An Egg is a Roblox game where you steal eggs, hatch pets, and the pets earn money every second. How much a pet earns depends on its base incom…
My 300 unit tests passed while my lead finder returned "Refund Policy" as a person
I build OpenLeads , an open-source tool that finds people and their work emails from public data. You type "dentists in Austin", it searches OpenStr…
Building a pay-per-use API platform on shared PHP hosting: no Node, no Docker, no queue
I'm a solo developer in Geneva and I just built Supercalcula API , a small platform of utility APIs sold by usage: QR codes and barcodes, email veri…
Four Bugs I Only Found by Driving the Real Window of a PySide6 App
My app is a desktop tool that traces images into SVG. The tracing engine is vtracer, a Rust extension, and the UI is PySide6. The engine had good un…
Sentinel Aleph: free crypto signals you can curl, give to your AI agent, or run as a paper bot
I'm Ahmet. For the past two to three years I've been building a crypto market scanner for myself in Switzerland, because I was tired of signal group…
I got tired of Selenium, so I made a browser you drive with HTTP requests
Every time I've needed to automate a browser, I've paid what I call the Selenium tax. You want to click a button on a page. Simple. But first: insta…
I built an agentic workforce where done means a command exited 0
Every failure I have had with coding agents looks the same at the end. The agent writes a summary that reads like success: the feature is implemente…
An agent that refuses: building a payout agent with neatlogs, Entire and cfo.ai
I won a $7,000 hackathon prize. The payout form offered me Wise. Wise's own help page says that personal accounts with an address in Indonesia "can…
Sphinx — your neighbourhood, turned into riddles
What I Built The screen shows one line: I am stone, flat, and written on. One of the dates on me is 1956. Then it goes away. You put the phone in yo…
How I got a 100/100 PageSpeed score on a site that updates every single day
Daily-updating sites are the natural enemy of perfect performance scores. Every new image, every new page, every new script is another chance for la…
I ported Germany's payroll tax flowchart to TypeScript and got it wrong three times
I expected Germany's payroll tax spec to be a formula. It's a flowchart: boxes and arrows that read and write global variables with names like RE4 (…
How I Made PdfWord Work Fully Offline as a PWA
Series: Building PdfWord — a free, no-backend PDF tools site (Part 10) Most "free PDF tools" die the moment your Wi-Fi does. That's weird when you t…