Arelvox is an independent technology project based in Spain. It started as a way to document real projects, like a Raspberry Pi home server, a network-wide ad blocker and first steps with Arduino, and it is growing into a library of practical guides and free tools for anyone who wants to understand the technology they use every day.
What you will find here
- Step-by-step guides on Linux, networking, programming, cybersecurity, electronics and Raspberry Pi.
- Free browser tools, such as the IPv4 subnet calculator and the chmod calculator. More are on the way.
- Clear explainers on topics like AI and PC hardware, written for beginners and curious hobbyists.
How the guides are written
Every guide aims to help you actually build, configure or fix something, not just read about it. That means real commands you can copy, short explanations of why each step matters, and honest notes about what tends to go wrong.
Technology changes fast, so guides are reviewed and updated over time. If you spot a mistake or something that no longer works, please let us know and it will be fixed.
News and security alerts
Besides evergreen guides, Arelvox covers technology news that affects ordinary users and small website owners: critical vulnerabilities such as PHP2Shell, problematic Windows updates, browser security releases and privacy changes. Each news article starts with a short summary, explains who is affected and ends with clear steps to check and fix the problem.
Editorial policy
Every news article is based on primary sources, such as official advisories, vendor release notes and reports from established security researchers, and those sources are linked at the end of each article. When sources disagree, the article says so instead of picking a side. Articles show a “Last updated” date and are revised when new facts appear, for example when a patch is released.
Arelvox uses AI tools to help research, draft and check articles and to build the free tools and games. Facts, version numbers and commands are checked against the linked sources before publishing. If you find an error, please report it and it will be corrected.
Free games
Arelvox also builds small free browser games, such as the stacking game Sky Stack and the daily puzzle Crack the Code. They run in your browser, need no account and do not collect personal data.
Ads and affiliate links
Arelvox is free to read. To keep it that way, some pages may show ads, and some guides include affiliate links to the products used in the projects. As an Amazon Associate, Arelvox earns from qualifying purchases. Affiliate links never change the price you pay, and products are recommended because they fit the project, not because of the commission. Affiliate links are always marked with a short note next to them.
Get in touch
Have a question, a correction or a topic you would like to see covered? Use the contact page. Suggestions from readers help decide what gets written next.