How to download and setup qed
Open terminal and run command
                                            git clone https://github.com/CharlesHawkins/qed.git
                                        
                                        git clone is used to create a copy or clone of qed 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 qed https://github.com/CharlesHawkins/qed/archive/master.zip
Or simply clone qed with SSH
                                            [email protected]:CharlesHawkins/qed.git                                    
                                    If you have some problems with qed
You may open issue on qed support forum (system) here: https://github.com/CharlesHawkins/qed/issuesSimilar to qed repositories
Here you may see qed alternatives and analogs
slate neovim lime vim pell micro oni kakoune vis vim-anywhere vue-quill-editor substance KodExplorer abricotine iota PhotoEditor notepadqq massren amp AnExplorer react-lz-editor vue-codemirror Left ui-tinymce textor ZMJImageEditor fiduswriter phi de void