Kali linux has tools for dictionary and brute force attacks on zips. download the LiveCD, burn to disc and boot from it on a spare machine plug in a thumbdrive with your zip file, let the machine do the work. Some tools let you wildcard your brute force attempts to save time in case you know something about the password. Kali is free. Dictionary attacks are hugely fast even with variation options compared to bruteforce. Some files have tools that use some exploit to remove passwords (PDFs are easy to remove protection). Kali is a great toolbox but not for computer newbs, though there are heaps of youtube and web tutorials for using kali on particular files. Its an all freeware tools Distroso you're not getting cracked "warez" files, I use it for penetration testing to secure networks rather than on files.
Simple zip cracking
tutorial.