I have think it could be great if peoples here could suggest free full none trial legal softwares, to help into the creation of Solarus Games.
http://www.gimp.org (http://www.gimp.org)
Gimp is a software to create some images, it's similar to Adobe Photoshop. Since in all games it use some creations of images i think it could be some good suggestion.
http://inkscape.org (http://inkscape.org)
Inkscape is a software to create some vectoriel images.
http://lmms.io (http://lmms.io)
Lmms is a software to create some musics and some beats, as in games it also have some musics and sounds into it.
Hope that these links gonna help peoples of Solarus?
A+
There was a similar discussion here:
http://forum.solarus-games.org/index.php/topic,359.msg1484.html
For video editing, there's awesome kdenlive (Linux only unless something has changed) and DaVinci Resolve Free (it's free for both commercial and non-commercial use, however it is closed-source unlike kdenlive and has few minor features, mostly pertaining to 3D stuff, which can be done via greenscreen and blender anyway, then mixed in, removed compared to paid version).