Background: I worked in the IT industry from 1991~2001. After that, I became a teacher in Japan. However, I still use technology every day in my job teaching English to Japanese students. Over the years, I've had the chance to use some of these technologies for software development and system administration. I'm not a master of any of these tools, but I have skills using each of them for various projects I've worked on in my experiences over the years. As the times have changed, the tools have also changed. Primarily I try to use those tools best fitted to get the job done.

Linux - Ubuntu, CentOS, Debian, Red Hat, Puppy Linux, OpenSUSE

Google Suite - Classroom, Docs, Sheets, Slides, Scripting, Query Language, GSuite Administration

Virtual Private Servers - AWS, Google Cloud, Softlayer, DigitalOcean, Sakura VPS, Linode

Web Services System Software - Apache2, NGINX, PHP-FPM, PHP, MySQL, red5

Learning Management Systems (LMS) - Moodle, edX, Blackboard, Manaba

Content Management Software (CMS) - Wordpress, Drupal, Joomla

Cloud Storage Software - Dropbox, Google Drive, Nextcloud, Owncloud, Amazon S3, Box
    Programming Languages - shell scripting, C/C++, Perl, Java, PHP, SQL, Lisp, Prolog, Ada, HTML (some of these are really old experiences)