The following utilities are written in JavaScript and should run on any browser having the JavaScript option enabled.

• Mongo Oligo Mass Calculator
  The ultimate oligonucleotide mass calculator, calculates also electrospray series, CID fragments, endo- and exonuclease fragments. Includes the possibility for calculating modified residues.

• Oligo II
  Oligonucleotide mass calculator, uses compositions as input.

• Oligo Composition Calculator
  Finds nucleotide compositions from a given mass. User defined residues can be included.

• MolE
  Calculates molecular masses and isotope ratios from elemental compositions.

• ElComp
  Calculates elemental compositions from a given molecular mass.

• SOS 1.0
  SOS (Simple Oligonucleotide Sequencer) is an interactive tool for manual sequencing of oligonucleotides. It has a graphical interface and allows to determine oligonucleotide sequences from CID MS/MS data. It uses mass/intensity lists as input. Allows to check for the presence of modified residues. Runs on Windows 3.xx, WIN95/98 and WINNT computers. Is available now!
  See: JASMS 2002, 13, 200-203.
  If you are interested in the program, please contact Jef Rozenski.