This extension will allow you to search by keywords.
Kitabmark plugin can be used for storing shorcut to the links. There are global Kitabmarks maintined by Kitabmark team and you can also add local kitabmarks.
Local created Kitabmarks will override the global Kitabmark url e.g. "go" can linked to "Google.com" as global kitabmark but "go" can also be created as local Kitabmark.
Local "go" Kitabmark can be linked to any site e.g. "Bing.com". When you will type "go" and press enter and if "Bing.com" is already opened in any Tab or Window it will be focused.
If the URL is not open in any Tab or Window then a new Tab will open with the URL.