EMBOSS is "The European Molecular Biology Open Software Suite".
EMBOSS is a free Open Source software analysis package specially
developed for the needs of the molecular biology (e.g. EMBnet) user
community. The software automatically copes with data in a variety
of formats and even allows transparent retrieval of sequence data
from the web. Also, as extensive libraries are provided with the
package, it is a platform to allow other scientists to develop and
release software in true open source spirit. EMBOSS also integrates
a range of currently available packages and tools for sequence
analysis into a seamless whole. EMBOSS breaks the historical trend
towards commercial software packages.