Requesting an update for gwyddion
Opensource: Yes
Link in the bottom
Link to source repository (sorry it uses svn): https://sourceforge.net/p/gwyddion/code/HEAD/tree/trunk/
Link to source tarball https://sourceforge.net/projects/gwyddion/files/gwyddion/2.55/gwyddion-2.55.tar.xz/download
Aside from language updates for Czech and Russian the following changes would be of benefit
Plenty of changes ranging from languages and to various functionsin the libraries and some new ones like resampling for images as well as volume rephrase and equiplane, overall packed with various new functions and modules.