Dice tomato, onion and cucumber. Cut jalapeno in half and remove the seeds and ribs. Finely chop jalapeno. Chop cilantro. Dice pineapple. Toss all in a bowl. Squeeze 2-3 tablespoons of lime juice into mixture. Sprinkle with salt. Mix everything together.
This salsa is sweet and tangy with a little bit of bite. Add more jalapeno to make it hotter.