Computing Minimal Equal Sums Of Like Powers
Jean-Charles Meyrignac's distributed-computing project on equal sums of like powers and the place to look for the current status of the problem.
Equal Sums of Like Powers
Chen Shuwen's extensive collection of equal sums of like powers, especially those that are solutions to multigrade equations.
Overview of Mathematician Secret Room
Page keeping track of solutions of x^3+y^3+z^3 < 1000 and x^3+y^3+2*z^3 < 1000.
Sortedsums
D. J. Bernstein's collection of tools for enumerating small solutions to certain types of equal sums of like powers.
The Fifth Taxicab Number is 48988659276962496
David W. Wilson's article on his search for the smallest integer that can be expressed as a sum of two positive cubes in 5 distinct ways, up to order of summands.