Networking Machinery for Software Engineers
After 10 years of working as a software engineer in web development, I joined a company in the energy industry. To be precise, in solutions for the…
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One AI Model for Everything? A Practical Guide to Task-Based Model Routing
One AI Model for Everything? A Practical Guide to Task-Based Model Routing When teams first add AI to an application, the architecture is usually si…
Why AND(0, ?) is 0: three values, snapshots and memory in a logic simulator
In my last post I planned a feature, and executing it turned up a bug: the simulator could not hold a bit with two gates. The first circuit in every…
Multi-Chain Crypto UX: Making Different Networks Feel Less Complicated
One thing I find interesting about blockchain development is that the user experience can become complicated long before someone makes their first t…
Tea Bro: a Telegram Mini App for tea-by-state matching and daily check-ins
Tea Bro is a free Telegram bot (and Mini App) built around a simple idea: a cup of tea is a low-friction reason to notice your state — and the produ…
I built a free, open-source platform with 180+ developer tools and 18 technical guides (Built with Astro)
Hey Dev community! I want to share a project I've been building: Th-Tech. It's a comprehensive, free, and open-source platform for developers. Why I…
Create an AI Dubbing Tool for Video Content
Why Build Your Own AI Dubbing Tool? If you’ve ever needed to localize a video, add a narration track, or simply replace a shaky on‑camera voice, doi…
10 Developer Tools That Make Vibe-Coded Apps Less Fragile
Vibe coding gets you to a working demo quickly. The problems arrive after that: a leaked key, a dependency that changed under you, a test that never…
Why Client Feedback Loops Are Broken (And How We Built a Zero-Login DOM Overlay to Fix Them)
If you’ve ever built a website for a client, you know the exact pain cycle: You spend two weeks building a pristine frontend in Webflow, Framer, or…
How I Built My Practice Website From Scratch With Revamp
When I set out to create a website for my medical practice, I started with the person who would be visiting it. Someone considering care should be a…
Building Privacy-First Patient Education Interfaces
Healthcare websites increasingly use interactive forms, educational questionnaires, visual explainers, and decision-support interfaces to make compl…
One .web.tsx in the whole app, and it is 196 lines of stack navigator that no phone will ever run
Munchable's phone app is also a website. Same Expo Router tree, same screens, exported with web.output: "single" and served at app.munchable.app . A…
Our audit log has 64 actions, 17 of them are also analytics events, and one field is deliberately dropped on the way
Nakodo has 77 call sites that look like this: await audit ({ action : " campaign.launched " , userId , entityType : " campaign " , entityId : campai…
Why Most Business Calculators Lie to You: The Mathematics of Integer Bounds and Capacity Value
By Engineering Team, JC TechLabs Published for DEV Community, Hashnode & Technical Publications Canonical URL: https://jctechlabs.com/tools/ Sou…
Proactive by Construction: Why the Next Generation of Agents Must Anticipate, Not Just React
Executive Summary: Current AI assistants are mostly reactive : they wait for a user’s message, run the model, and answer. This works for simple quer…
I Shipped 2,000+ Free Calculators With Zero Backend. Here's What I Learned.
When people hear "calculator website," they picture one page with a few inputs. Mine has over two thousand calculator pages — income tax, loan insta…
How I Built a Multi-Agent Micro-SaaS Orchestration Engine in n8n (Zero Cloud Subscriptions)
Building scalable, multi-agent AI systems usually means falling into one of two traps: drowning in the spaghetti code of Python-based orchestration…
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…
Just shipped something I've been building for devs who work with AI coding agents:
Meet Loly Companion — an intelligent, non-intrusive desktop companion & floating notch interface. No more chaotic terminals. Loly sits on your d…
I Built a Chess Tool That Turns My Lost Games Into Personalized Puzzles
One thing I've noticed about improving at chess is that solving puzzles is useful, but learning from your own mistakes is important too. When I lose…
Building a marketplace for Discord bots and templates: our Stripe Connect onboarding, step by step
We're building Botnexio, a marketplace where creators sell Discord bots, GPTs, vibe-coding templates and prompt packs. This is our thing, so treat i…
CrUX Now Counts SPA Soft Navigations. 5 Things I'd Check Before Search Console Switches
For years, the Chrome UX Report (CrUX) has had a blind spot. If your site is a single-page app, Chrome only recorded the first "hard" page load. Eve…
How to Fix "Stripe Webhook Signature Verification Failed" in Laravel
If your Laravel application suddenly throws "Stripe webhook signature verification failed" — the Stripe PHP SDK's SignatureVerificationException , u…
Wait, How Did Hackers Steal the Encryption Key Too?" 5 Supabase Security Traps I Fixed in Production
Introduction: The Headline That Made My Stomach Drop Almost every week, we see another headline about a major tech company or hot startup suffering…
Firefox Enterprise Is Here. How to Get Its AI Controls Free with policies.json
If you run plain Firefox, at home or on a fleet of laptops managed with a policies.json file, Firefox Enterprise takes nothing away from you. Mozill…
Building physics-based 3D dice in the browser (three.js + cannon-es, PWA, 11 languages)
I built 3DRoll, a free dice roller where the dice actually tumble. Here's how it works. Why physics instead of Math.random() The easy way is to choo…
Web Accessibility with Firefox DevTools: Auditing ARIA, Contrast, and Keyboard Navigation
Web accessibility ensures that websites work for all users — including those using screen readers, keyboard-only navigation, or other assistive tech…
I'm 13 and I built a free calorie tracker. It's live, and here's everything that broke.
Every calorie app I tried wanted my email and a card before it showed me anything. So I built one that doesn't. I don't write code by hand. I descri…
The link is the diagram: why I built FlowDiagram, a free diagram tool your AI can draw in
By Tuna, the maker of FlowDiagram Every engineering team I have worked with has the same graveyard: a Confluence page with an architecture diagram t…
I built a React library to generate editable Google Docs with JSX
I was building a contract-generation system when we reached a point where half the document lived in a Google Doc template and half in Google Apps S…