Table 1.

Comparison of the features of existing RNA visualization tools (where PV = PseudoViewer)

	forna	VARNA	PV	jVizRNA	RNAfdl
Editing	✓	✓			✓
Pseudoknots	✓	✓	✓	✓
PDB files	✓
Struct. prediction	✓
Probing data	✓	✓
Custom coloring	✓	✓			✓
Color schemes	✓	✓
RNA-RNA pairs	✓	✓	✓
Circular RNA	✓
Annotations		✓
Circular layout		✓		✓	✓

forna provides at least three convenient features not found in other programs.