How to download and setup ctk
Open terminal and run command
                                            git clone https://github.com/ctk-hq/ctk.git
                                        
                                        git clone is used to create a copy or clone of ctk 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 ctk https://github.com/ctk-hq/ctk/archive/master.zip
Or simply clone ctk with SSH
                                            [email protected]:ctk-hq/ctk.git                                    
                                    If you have some problems with ctk
You may open issue on ctk support forum (system) here: https://github.com/ctk-hq/ctk/issuesSimilar to ctk repositories
Here you may see ctk alternatives and analogs
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