Free Lifetime Premier Membership at UsingMiles.com
This was posted 9 months 4 days ago, and might be an out-dated deal
Premier membership is normally $29.99/year but there's now free lifetime membership thanks to Lufthansa.
The site is designed for people to manage points from different Loyalty Programs, including heaps of Airlines and Hotel Chains. There's a list here: https://www.usingmiles.com/programs
Also, there are inbuilt search functions that take your point totals into account.