doublecontact
                                Offline DE-independent Qt-based contact manager primarily for phonebooks editing/merging. Beta.
                            
                        How to download and setup doublecontact
Open terminal and run command
                                            git clone https://github.com/DarkHobbit/doublecontact.git
                                        
                                        git clone is used to create a copy or clone of doublecontact repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with doublecontact https://github.com/DarkHobbit/doublecontact/archive/master.zip
Or simply clone doublecontact with SSH
                                            [email protected]:DarkHobbit/doublecontact.git                                    
                                    If you have some problems with doublecontact
You may open issue on doublecontact support forum (system) here: https://github.com/DarkHobbit/doublecontact/issuesSimilar to doublecontact repositories
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