Where do i get a model program

Where do i get a model program

ive looked for it but i cant find on can someone tell me were to get one or do you have to pay for one

you can get milkshape or gmax (idk the link but just search it on google, well heres milkshape http://www.milkshape3d.com). there both free but milkshape has a 31 day use time and then you have to pay. The good programs like 3d studio are quite expensive.