The BioCocoa framework provides developers with the opportunity to add
support for reading and writing BEAST, Clustal, EMBL, Fasta, GCG-MSF, GDE,
Hennig86, NCBI, NEXUS, NONA, PDB, Phylip, PIR, Plain/Raw, Swiss-Prot and
TNT files by writing only three lines of code.
The framework is written in Cocoa (Objective-C).

WWW: http://bioinformatics.org/biococoa/