Concerto is a set of tools to analyse SSL/TLS datasets. In particular, it can extract, analyse and browse certificates and chains.
Concerto has been originally developed at ANSSI, but new releases are not provided by the agency anymore.
Therefore, anyone who wishes to get upstream versions of the project must visit https://github.com/picty/concerto as this page now only serves archive purposes.
ANSSI is providing the last stable commited version of concerto as an archive on this website: