Atlas (Automatically Tuned Linear Algebra Software)

xmds   (Compare Project)

Mostly written in C++

License: gpl

DOLFIN   (Compare Project)

Mostly written in C++

License: lgpl3

Gravit   (Compare Project)

Mostly written in C

License: lgpl

igraph library   (Compare Project)

Mostly written in C

License: gpl

lib2geom   (Compare Project)

License: lgpl21, mozilla_public_1_1

Scilab   (Compare Project)

License: Unknown

JMathLib   (Compare Project)

Mostly written in Java

License: lgpl

Maxima GPL CAS based on DOE-MACSYMA   (Compare Project)

Mostly written in Lisp

License: gpl

GNU Octave   (Compare Project)

License: gpl3_or_later

mjbWorld   (Compare Project)

License: Unknown