1. Arvestad, Lars, alv: a console-based alignment viewer, https://github.com/arvestad/alv, 2018
2. Jalview Version 2--a multiple sequence alignment editor and analysis workbench
3. SeaView Version 4: A Multiplatform Graphical User Interface for Sequence Alignment and Phylogenetic Tree Building
4. Sonnhammer, Erik, Belvu, http://sonnhammer.sbc.su.se/Belvu.html
5. NCBI, NCBI Multiple Sequence Alignment Viewer, https://www.ncbi.nlm.nih.gov/projects/msaviewer/