What you typically do with proxies is run them on your machine, but you need a lot of RAM and CPU power.
CPU limiter
http://mion.faireal.net/BES/#download
I recommend 8gb of RAM to handle about 3-4 bots. This being said you have a i5 or i7 cpu and not a toaster. If you can't afford a high spec computer, I would suggest researching Runescape VPS solutions in google and check what they have to offer. There are some really shady VPS websites you have to look out for and make SURE you can cancel your agreement with them anytime. I do not recommend using RuneMate on a Linux OS as it is buggy.
http://virmach.com/powerful-safe-runescape-services/
I trust Virmach because they have an awesome team that helped me with my farming services. They answer their tickets within 24Hours and offer a free IP refresh if it so happens to get banned