 If you liked
Zero no Tsukaima
|
 ...then you might like
Shinkyoku Soukai Polyphonica Crimson S
|
Both anime take place in school related to magic (pure wand style magic in ZnT and songs to command/strenghten spirits in Polyphonica). Both have pairs contracted by magic (a mage and human familiar in ZnT and human with very human-like spirit in Polyphonica).
Diffrences include: Znt is set in medieval-style magic world, while Plyphonica in alternate world with modern technology and spirits living alongside humans. ZnT is also much more harem/ecchi style. Moreover ZnT lacks definite ending, even if we include the other 2 seasons.