[Trisquel-users] GUI Compressor & Archiver with Compression Ratio

[pandyadeepp]

I am using Trisquel 7.0 LTS and I've used file-roller and xarchiver GUI  
Applications but they (GUI) have not features for compression ratio like:  
No-compression (store), Fast, Normal, Ultra etc. (such like present in peazip  
& 7zip GUI).

I want to use only 'free/libre' software. So, Suggest me good GUI (GTK+  
frontend) Application with such feature.