TechSpot checks out third-party router firmware, you can read their article over here.
For most users a good wireless router is the one that you set up in a few easy steps and forget about it as long as it gets you online. But beyond the stock features that came with your router, there are many things that the hardware you bought might be capable of.
Luckily for you, people have been working on ways to get the fancy stuff running on your average $60-$100 device. After a relatively simple upgrade to a free third-party firmware, you'll be able boost your wireless signal, prioritize what programs get your precious bandwidth, and do lots of other stuff usually reserved for pro-grade wireless routers.