TRMPH
TRMPH offers online board game analysis tools that help you play out different lines of variations and share game records.
Breakthrough Board
(7×7 and 8×8)
Connect6 Board
(19×19)
Dots-and-boxes Board
(4×4 to 7×7)
Havannah Board
(size-4 to size-10)
Hex Board
(11×11, 13×13, and 19×19) (
HexWiki mirror
)
Slither Board
(9×9 and 13×13)