PiyoShogi on the App Store

Shogi – Play Japanese chess online, Shogi rules, printable shogi boards and pieces, and all kinds of Japanese chess resources.

Classic Shogi Game by Cross Field Inc.

I'm not sure if this has been shared already but Stephen Tavener's program AiAi is a Java-based general game playing engine. Recently a lot of Shogi variants were added to AiAi. Some

Opening Showcase

Steam Community :: Shogi!

Piyoshogi — The best Shogi app for beginners, by Seigo Sato - Shogi player

Taikyoku shogi - Wikipedia

Ai Ai Dr Eric Silverman

Shogi and some variants now available in Ai Ai — play against AI or online!

AlphaZero: Shedding new light on chess, shogi, and Go - Google DeepMind