Where can I find software to allow me to edit the GO terms?

FAQ tags: 
  • Protege: Protege is a free, open-source ontology editor and framework for building intelligent systems. At this time, all ontology editors for GO use this program.
  • OBO-Edit - now deprecated: OBO-Edit was developed by the software group at the Berkeley Drosophila Genome Project (BDGP), specifically for ontology editing; it ensured that file syntax remained correct. Until recently, it was also used for editing GO, but its use has been deprecated.