Firefox extensions

Add font preview to the fonts dialog.
Show RSS/Atom headlines on statusbar.
View Accesskeys
"View AccessKeys for the current page (like in Opera).

Windows softwares

Show a Japanese traditional clock, a Western clock, a Calendar, and the phases of the moon.
Jinro! Second Edition
A software of Werewolf for Game Master by using Skype.
Auto Rename for Skype + Jinro! SE
Automatically changes the Skype display name to the Jinro! SE entry name.
Howl Tool for Jinro! SE
Add howl at night into Skype's Werewolf.

Other softwares

Calendar for year 2015 (Heisei 27)
The PDF document of Japanese calendar for year 2015 (Heisei 27).