MeggieSoft Euchre and Ecarte

Euchre & Écarté is a dual-mode game which may be configured to play either Écarté or two-player Euchre, or even a hybrid of the two.

Écarté is a two-person card game which originated in France and was popular in Paris in the early 19th century. The origins of Euchre are much less clear, but the majority opinion is that both Euchre and Écarté were derived from a common root (possibly the Spanish game named Triumph). Other sources believe that Euchre evolved from Écarté. In any case, Écarté's popularity was initially established in Europe, and Euchre's in the USA (possibly via the Pennsylvania Dutch).

Euchre was initially a four-handed game, from which the two-player version was derived. Écarté has always been a two-player game. The standard rules of Écarté and two-handed Euchre are similar in many respects

http://www.bufton.org/meggiesoft/eucharte.htm