I don't know about all these formats, but here http://libreprojects.net there
are a lot of projects that should use them so maybe you can find about
- [Trisquel-users] free save formats -- list adel . afzal
- Re: [Trisquel-users] free save formats -- list legimet . calc
- Re: [Trisquel-users] free save formats -- list mprodrigues
- Re: [Trisquel-users] free save formats -- list legimet . calc
- Re: [Trisquel-users] free save formats -- list Andrew Roffey
- Re: [Trisquel-users] free save formats -- list tegskywalker
- [Trisquel-users] Re : free save formats -- list magicbanana
- Re: [Trisquel-users] free save formats -- list legimet . calc
- [Trisquel-users] Re : free save formats -- ... magicbanana
- Re: [Trisquel-users] free save formats -- l... adel . afzal
- Re: [Trisquel-users] free save formats ... mikko . viinamaki
- Re: [Trisquel-users] free save for... adel . afzal
- [Trisquel-users] Re : free save formats -- list cedricm33