DEV Community • 2026-04-11 07:53

Top 5 Free Currency Converter APIs for Developers in 2026

If you've ever needed historical exchange rates for backtesting a trading algorithm, or wanted to convert currencies in an app without worrying about API limits, you know the pain of finding a reliable free currency API. Most free APIs give you current rates. Some give you a few years of history. Almost none give you 57 years. Here's the rundown of the top free currency converter APIs available ...

0 0
2m read
Tomato — Visual DAG editor for NixOS configurations
DEV Community • 2026-04-11 07:52

Tomato — Visual DAG editor for NixOS configurations

Visual hierarchical graph editor that generates configuration.nix and deploys via nixos-rebuild switch. Nodes are Nix fragments, Gateways descend into subgraphs (floors) NixOS merges the composed fragments automatically. One-click deploy to a real NixOS machine, OODN registry for ambient config (hostname, timezone, stateVersion...) Pre-built stacks (Grafana+Prometheus, Web Server, etc.) Built ...

0 0
1m read
DEV Community • 2026-04-11 07:48

Why does your Arduino project feel 'wrong' even when the code works?

Why does your Arduino project feel 'wrong' even when the code works? You've been working on your interactive project for two weeks. The code compiles. The wiring looks correct. The serial monitor shows everything is running as expected. But something is off. When you demo it to someone, they don't react the way you imagined. You built something technically correct — but it doesn't fee...

0 0
2m read
Why You Can’t Download Netflix Videos: A Deep Dive into DRM
DEV Community • 2026-04-11 07:43

Why You Can’t Download Netflix Videos: A Deep Dive into DRM

Netflix uses a DRM (Digital Rights Management) technology named Widevine by Google. Widevine isn't just a tool, but it's a whole architecture that makes sure that only authorized users and trusted devices can access the video content. Pre-requisite → Trusted Execution Environment (TEE) It's a small place in your system where all the sensitive information resides. It is separate from your OS, so...

0 0
2m read
DEV Community • 2026-04-11 07:39

How to Understand AI: Agents, Search, Machine Learning, and Deep Learning

Artificial Intelligence can feel confusing because it is often explained as separate topics like machine learning, deep learning, and search algorithms. This guide explains AI as one unified system by connecting intelligent agents, search, machine learning, and deep learning. Artificial Intelligence is often explained as a collection of separate topics: intelligent agents, search, machine learni...

0 0
7m read
DEV Community • 2026-04-11 07:35

When Your Node.js App Works Locally but Fails on a VPS

You build a Node.js application. It runs perfectly on your development machine. You deploy it to a VPS… and suddenly, it stops working. Same code. Same environment. Or so you think. If you’re a developer, chances are you’ve encountered this frustrating scenario. I recently faced this exact issue, and after three days of debugging, I discovered the unexpected culprit: PM2 was using a different N...

0 0
3m read
DEV Community • 2026-04-11 07:33

HTCPCP-2000 // COFFEE_OS

**What I Built I built the HTCPCP-2000 // COFFEE_OS, a hyper-intelligent, retro-futuristic, and entirely useless coffee pot simulator. It is strictly compliant with RFC 2324 (Hyper Text Coffee Pot Control Protocol) and is designed to solve the non-existent problem of "not having enough technical jargon in your morning brew." The OS features: AI-Driven Brewing: Uses Gemini AI to analyze your "Emoti...

0 0
2m read
DEV Community • 2026-04-11 07:33

EXPOSED: The Youdao Ads Influencer Marketing Scam - Technical Analysis & Red Flags

How sophisticated scammers are exploiting legitimate NetEase domains to target content creators and developers with fake influencer marketing campaigns How sophisticated scammers are exploiting legitimate domains and targeting content creators TL;DR Youdao Ads / InfunEase (infunease.youdaoads.com) is a confirmed scam operation targeting content creators, influencers, and developers...

0 0
6m read
WSL Dashboard v0.6.0: The Ultimate WSL Management Tool for Developers
DEV Community • 2026-04-11 07:30

WSL Dashboard v0.6.0: The Ultimate WSL Management Tool for Developers

Elevate Your WSL Experience with v0.6.0 As a developer, I've always wanted a powerful yet lightweight tool to manage my WSL (Windows Subsystem for Linux) instances. After months of development and listening to community feedback, I'm excited to introduce WSL Dashboard v0.6.0 - a modern, high-performance management dashboard built specifically for developers who work with WSL. ...

0 0
3m read
DEV Community • 2026-04-11 07:29

Choosing the Right Shortest Path Algorithm

Shortest path problems on LeetCode vary by constraint. Graphs can have weights, no weights, single source focuses, or all pairs requirements. Some have positive costs and others have negative costs. Each specific situation has a corresponding algorithm. Understanding the constraints of the graph dictates the strategy. Identifying the Graph Before writing code, verify the terrain. ...

0 0
3m read
DEV Community • 2026-04-11 07:27

Why We're Switching 7 Web Scrapers to Pay-Per-Result on April 17

On April 17, we're flipping the pricing model on seven of our Apify web scrapers from free-to-use to pay-per-result. Twitter, Facebook Ads, Reddit, Etsy, Instagram, LinkedIn Profile, and Amazon — all at once. This post explains why, what it means for you, and what we honestly expect to happen. The Problem With Subscription Pricing for Scrapers Most scraper pricing works like a gym mem...

0 0
4m read
El Ajedrez de la Obsolescencia: Cómo convertir el colapso de la cadena de suministro en tu mayor ventaja competitiva
DEV Community • 2026-04-11 07:25

El Ajedrez de la Obsolescencia: Cómo convertir el colapso de la cadena de suministro en tu mayor ventaja competitiva

La narrativa que domina los pasillos de las grandes empresas modernas está peligrosamente equivocada. Cuando una línea de producción, que fabrica equipos con márgenes millonarios, se detiene porque un minúsculo microcontrolador de dos dólares ya no está disponible, la reacción estándar de la junta directiva es culpar a la volatilidad del mercado. Los líderes operativos y financieros apuntan a la e...

0 0
8m read
DEV Community • 2026-04-11 07:23

The YC President Endorsed an AI Memory System With Fake Benchmarks. He Also Shipped His Own. We Read the Code.

Garry Tan is the president and CEO of Y Combinator. He has over 738,000 followers on X. Yesterday he publicly endorsed MemPalace, calling it "impressive." In the same post, he announced GBrain, his own AI memory project. There is one problem with the endorsement and one problem with the project. The Endorsement MemPalace reported Recall@5 retrieval scores as end-to-end QA accuracy. Wh...

0 0
3m read
I Built a GPS Tracker Without a SIM Card - Here's How
DEV Community • 2026-04-11 07:22

I Built a GPS Tracker Without a SIM Card - Here's How

Most GPS tracker tutorials hit you with the same wall: "You'll also need a SIM card, a GSM module, and..." - and suddenly a weekend project turns into a problem. I wanted to skip all that. Here's what I built instead. GPS Tracker with Seeed Studio XIAO ESP32-S3 The Setup Hardware: Seeed Studio XIAO ESP32-S3 Neo-6M GPS Module External patch antenna Breadboard + jumper wires Softwa...

0 0
2m read
Integrated Live Log Viewer Widget for Egui/Eframe Apps in WebAssembly Environments.
DEV Community • 2026-04-11 07:20

Integrated Live Log Viewer Widget for Egui/Eframe Apps in WebAssembly Environments.

Introduction Building egui/eframe applications, especially for WebAssembly (WASM) environments, often feels like debugging in the dark. The absence of a terminal in WASM means traditional logging methods are off the table, leaving developers scrambling for alternatives. This gap is where egui_tracing steps in—a drop-in live log viewer widget designed to address the critical need for a...

0 0
17m read
DEV Community • 2026-04-11 07:18

Jestronaut: Explore Your Jest Tests Like Never Before

Jest tells you what failed. Jestronaut helps you explore why. If you’ve ever scrolled through Jest output trying to understand failures, you’ve likely felt the limitation of static logs. As test suites grow, the default CLI output becomes harder to navigate. Identifying failures, understanding structure, and debugging efficiently takes more effort than it should. That’s exactly why I built Je...

0 0
2m read
DEV Community • 2026-04-11 07:16

How I Built a Design Review Tool for AI-Generated Frontends

How I Built a Design Review Tool for AI-Generated Frontends If you've used Claude Code, Cursor, Codex, or other AI coding agents to generate front-end code, you probably know this feeling: the page works, but it still doesn't look good enough. The layout is technically correct. The sections are there. The responsive behavior mostly works. But the visual result often feels cramped, flat...

0 0
5m read
DEV Community • 2026-04-11 07:15

Why I don’t trust my own deployments (and why you should audit your Security Headers)

As a Laravel developer, I’ve always felt pretty safe. Modern frameworks do a lot of heavy lifting, but here’s the cold truth: even the most secure backend can be undermined by a "leaky" frontend or a misconfigured Nginx. I caught myself constantly jumping between third-party tools every time I deployed a new feature just to make sure I hadn't messed up my Strict-Transport-Security or broken my Co...

0 0
1m read
DEV Community • 2026-04-11 07:01

The Pantheon of Tokens: Why Developers Rank AI Models Like Greek Gods and How It's Quietly Sabotaging Their Architecture

The Mythology of AI Models: Why They're Treated Like Greek Gods, and the Damage It Can Cause Last week I caught myself saying "Claude is better at reasoning" like I was talking about a person. That sentence should have scared me more than it did. We've created this weird mythology around AI models. And it's messing with our engineering choices in ways we don't often openly discuss. ...

0 0
3m read
𝚓𝚊𝚟𝚊𝚜𝚌𝚛𝚒𝚙𝚝 • 2026-04-11 07:00

Showoff Saturday (April 11, 2026)

Did you find or create something cool this week in javascript? Show us here! submitted by /u/AutoModerator [link] [comments]

0 0
1m read
Previous Next