WPMU DEV - WPMU offers WordPress Plugins, WordPress Themes, WordPress Multisite and BuddyPress Plugins and Themes.
Attendify - Develop relationships at the events that you attend by creating smaller events with just a few people.
Firefox Developer Edition - Built for those who build the Web. The only browser made for developers.
CrowdCompass - CrowdCompass offers mobile app development for conferences, meetings, conventions.
MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
EventMobi - EventMobi is an interactive mobile event app, audience response and engagement platform for conferences and trade shows.