I have added all my 16 plugins to this site downloads page [1], so you guys can grab the beta/development version of all my plugins easier.
All the plugins listed on that page are actually remote files each linking to the development version of the respective plugin over at WordPress Plugins Repository [2]
Do note that the plugins listed there will always be beta/development version because once a version is stable, I will release it to https://lesterchan.net/portfolio/programming.php [3] and http://wordpress.org/extend/plugins/profile/GamerZ [4], and then move forward to the next development version.