Biblatex relies on BibTeX for sorting and generating a generic .bbl file. But Biber eliminates the need for BibTeX. It includes a pure perl BibTeX parser. Given the same data file as input, biber should output a functionally identical .bbl file as BibTeX. The advantages of biber are that you are no longer being dependent upon BibTeX include the following: full Unicode support, no memory limitations, and extensibility.