From the authors' description, The ARB (ARB short for the Latin
arbor) program package comprises a variety of directly interacting software tools for sequence database maintenance and analysis controlled by a common
graphical user interface. Although it was initially designed for
ribosomal RNA data, it can be used for
nucleic acid and
amino acid sequence data. A central
database contains processed (aligned)
primary structure data. Additional descriptive data can be stored in database fields assigned to the individual sequences or linked via local or worldwide networks. A phylogenetic tree visualized in the main window can be used for data access and visualization. The package contains additional tools for data import and export, sequence alignment, primary and
secondary structure editing, profile and filter calculation, phylogenetic analyses, specific hybridization probe design and evaluation, and other components for data analysis. The latest version of the software was released in 2021. The newer version can run on
macOS. ==References==