msaR is a an htmlwidgets wrapper of the BioJS MSA viewer javascript library. msa will pass alignments to the BioJS MSA.


You can install msaR from CRAN or github:



This is a basic example which shows you how to solve a common problem:


# read some sequences from a multiple sequence alignment file and display
seqfile <- system.file("sequences","AHBA.aln", package="msaR")
msaR(seqfile, seqlogo = T)

All contributions are welcome! Please feel free to submit a pull request.

Support and Suggestions

If you have any problem or suggestion please open an issue here


This project is licensed under the Boost Software License 1.0.

Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the software and accompanying documentation covered by this license (the “Software”) to use, reproduce, display, distribute, execute, and transmit the Software, and to prepare derivative works of the Software, and to permit third-parties to whom the Software is furnished to do so, all subject to the following:

If you use the MSAViewer on your website, it solely requires you to link to us