tree-core-ide
                                The next generation integrated development environment for processor design and verification.  It has multi-hardware language support, open source IP management and easy-to-use rtl simulation toolset.
                            
                        How to download and setup tree-core-ide
Open terminal and run command
                                            git clone https://github.com/microdynamics-cpu/tree-core-ide.git
                                        
                                        git clone is used to create a copy or clone of tree-core-ide 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 tree-core-ide https://github.com/microdynamics-cpu/tree-core-ide/archive/master.zip
Or simply clone tree-core-ide with SSH
                                            [email protected]:microdynamics-cpu/tree-core-ide.git                                    
                                    If you have some problems with tree-core-ide
You may open issue on tree-core-ide support forum (system) here: https://github.com/microdynamics-cpu/tree-core-ide/issuesSimilar to tree-core-ide repositories
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