does it's possible to install quartus programmer and flash programmer in a pc without quartus and eclipse/nios2 installed? if true, wich is the way to do this?

Hi Alfredo, Good day. The Flash Programmer is part of Intel Quartus Prime Programmer. So, you need Quartus Prime software in order to use Flash Programmer. For Quartus II Stand-Alone Programmer, you can refer link below. https://www.intel.com/content/www/us/en/programmable/downloads/software/prog-software/121.html Thank you.