Are this software possible to install?

[Sniper]

Hi, i wonder if its possible to install this software in Manjaro?
I cant find them on the add / remove software.

Salome-Meca 2018.1
Code Aster v13.4
Impact 0.7.06.40
OpenFOAM v4.1.2
Helyx OS GUI
Elmer FEM solver & ElmerGUI
CalculiX 2.13 &
CalculiX Launcher 0.32
Code-Saturne 5.0.4
GMSH 3.0.6
MBDyn 1.7.3
Octave GUI
Scilab
Gerris flow solver
wxMaxima
R and RKWard
Paraview 3.10.2

KiCAD
LibreCAD
FreeCAD
SagCad
Freecad (+embedded Openscad)
PyCam
Camotics
Dxf2Gcode
Inkscape Gcodetools plugin
GCAM
cadpy
FlatCAM
F-engrave
Slic3r
Tetgen 1.5

ImageJ
ITK-Snap
javaprop
javafoil
XFLR5

[brahma]

i just randomly tried searching for some and find them, including in official repositories… other are in AUR, or as flatpaks

[Sniper]

sight
Forgot that i didn’t enable the AUR and Flatpak in the settings!