In the past... Tang Soo Do, Tae Kwan Do (I have a Blue tip), Shotokan, Shutokai and Kyo-Koshin Karates, Muay Thai, Western Kickboxing, Wushu, Wing Chun, Lo Ha Ba Fut, Choy Lee Fut, Lung Ying, and Hung Gar Kung Fu styles, a little Bando, JKD and Freestyle...
And a few more I may have forgotten!
Now, I do:
Shingen Ryu Batou Jutsu (teaches Daito, Shoto, Tanto and Naginata), various Aikido styles, Hockheim CQC, Knife and Archipelago Combatives (a flawless blend of everything that works, including Arnis De Mano, Modern Arnis, Bujitsu Kempo, Aiki-Jitsu, Kajukenbo, Ju Jitsu and Sadiq Kuntao Silat), Wayne Roy Ninjutsu (a modern, tactical version of Bujinkan Ninjutsu)...