acts_as_indexed
                                Acts As Indexed is a plugin which provides a pain-free way to add fulltext search to your Ruby on Rails app
                            
                        How to download and setup acts_as_indexed
Open terminal and run command
                                            git clone https://github.com/dougal/acts_as_indexed.git
                                        
                                        git clone is used to create a copy or clone of acts_as_indexed 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 acts_as_indexed https://github.com/dougal/acts_as_indexed/archive/master.zip
Or simply clone acts_as_indexed with SSH
                                            [email protected]:dougal/acts_as_indexed.git                                    
                                    If you have some problems with acts_as_indexed
You may open issue on acts_as_indexed support forum (system) here: https://github.com/dougal/acts_as_indexed/issuesSimilar to acts_as_indexed repositories
Here you may see acts_as_indexed alternatives and analogs
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