Using the three free, open-source and original system components (PHP, MySQL, and phpMyAdmin) to develop, test, and deploy Web applications locally is almost the only best option available at the moment. Thereinto, Apache Web server and PHP hypertext preprocessor are preinstalled on Mac. But they are not enabled by default, and the pre-installed version of PHP lacks many utility features. The MySQL needs to be installed and configured separately. Unless you are able to expertly use command lines in Terminal, installing the one-stop solution MAMP (PRO) is much simpler and more efficient.

VLC media player (VLC for short = abbreviation of VideoLAN Client) is a free, open-source and cross-platform multimedia player developed by VideoLAN from France. VideoLAN was originally a project plan of the students at École Centrale Paris (ECP) started in 2001, with members from all over the world. It originally consisted of VideoLAN Client (VLC) and VideoLAN Server (VLS) these two programs. However, because most of the VLS functionalities had been integrated into VLC, they eventually renamed this project VLC media player.

The advantage of using an email client is that you don't have to open a web browser and log in to your mailbox every time; supports for new email reminder; allows to send emails to third-party applications (e.g., Evernote, Todoist, etc.), and so forth. Therefore, users who need to send and receive emails frequently always tend to use a desktop email client, rather than any web browser.

To learn 3D game development with limited pockets, I guess you've tried many classic, free, open-source game development engines like TV3D (Truevision3D), OGRE and Irrlicht Engine. By contrast, the pros of TV3D are easy to learn and get started with; its cons are that it was built based on the ActiveX control and requires the RunTime DLL to be registered before running; OGRE is better than Irrlicht in that it has a capable and vigorous engine framework, and supports for extending new functionality in the form of plug-ins (this is better than Irrlicht); but its downside is that it's not easy to get started with.

Tiled (full name: Tiled Map Editor) is currently the most popular, powerful and flexible tiled map/level editor for all types of 2D games, developed by Thorbjørn Lindeijer in 2008 (written in Java, therefore it's cross-platform). It is identified as an edge tool for 2D game developers to quickly create game maps.