Guides, tutorials, and spotlights on developer tools and Android apps.
These five browser-based developer tools save time on tasks you'll do constantly: formatting, encoding, generating, and converting data without leaving the browser.
Hash functions are everywhere in computing — from file integrity to password storage. Here's how they work, what the differences between MD5 and SHA-256 mean in practice, and where each belongs.
JSON is the universal language of web APIs. Here's what it is, how it works, and why a formatter saves you hours of debugging.
Base64 is everywhere in web development — email attachments, JWTs, data URIs, API keys. Here's exactly what it does and when you should use it.
JWT tokens are in every modern auth system. Here's how to decode them, what the three parts mean, and the common mistakes developers make.
Cron syntax is terse but powerful. Here's how each of the five fields works, with practical examples covering the most common scheduling patterns.
Not all random passwords are equally secure. Here's what entropy means, why length beats complexity, and how to generate passwords that actually resist attacks.
SSH and Telnet both give you a remote terminal. But they're separated by 30 years of security thinking. Here's what the difference means in practice.
Unix timestamps appear in logs, APIs, databases, and tokens. Here's exactly what they are, why every developer should understand them, and the gotchas to watch for.
Regex appears in every language and every editor. This practical guide covers the syntax you'll use daily, from basic character classes to lookaheads.
UptimeOwl is a free Android uptime monitor that checks HTTP and TCP endpoints in the background, sends push alerts when something goes down, and graphs response times.
TeslaScope is a free Android app that connects to your Tesla via a Bluetooth ELM327 OBD2 adapter and displays live CAN bus data, battery cell grid, gauges, and diagnostic information.
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