This is a collection of classic short stories written as parallel texts, i.e. each paragraph next to its translation. It's mainly in Spanish, English and French, but the UI is in Spanish.

https://albalearning.com/ListadoParalelos.aspx

This is my favorite short story, The Happy Prince by Oscar Wilde:

https://albalearning.com/TextosParalelos.aspx?id=7061&idB=70...