LineageOS (successor of CyanogenMod) is a very popular free and open-source operating system for various Android-based mobile devices (smartphones, tablet computers, and set-top boxes). It can make your idle, increasingly dull old Android-based phones or tablets shine again.

Aerialod is a very easy to use, free and open-source 3D terrain generation edge tool, developed by ephtracy (the author of MagicaVoxel). It can help you easily generate various types of terrains, render real satellite data, generate synthetic height maps, use HDR rendering, output maps up to 16K, and much more. This is enough to make it easy and fast for any user who doesn't know anything about modeling to create a 3D map.

Actual Installer is a small, fast, easy-to-use and professional tool for creating Windows software installation packages. Its functions are comparable to NSIS and Inno Setup, but it is not widely used yet. If you are looking for a powerful and friendly software setup packager for Windows-based programs, give Actual Installer a try.

Website's log file data is very valuable, because it shows exactly what happens when search engine bots visit your site. However, log files can be difficult to view and analyze without programming experience or the right tools. So, webmasters always need to use SEO tools to help improve their work efficiency at work.

PHP and MySQL remain the two most popular open-source Web development technologies. In PHP and MySQL Web Development, the authors share their experience with PHP and MySQL without reservation. This book is a definitive guide to building database-driven Web applications using PHP and MySQL, and has been a best-seller for more than a decade.