GUIexpert/consultant required

i need a recommendation of a GUI/UI technology. this project is recommendations only, examples and maybe mockup the GUI can be a desktop or a web app. the GUI does the following 1) accepts user text 2) get text response from server in json format. 3) renders the resoponse on the textbox. replacing the original text. this isnt an ordinary text. 4) now, when the mouse hovers each word in the text box, a small dropdown is opened, with few alternatives, according to the resonses. 5) user can change the text using in the word specific dropdown. 6) when he finishes - text is gathered from the screen and sent again to server. from GUI perspective - the idea is take very complex text structures - and show only the minimum. if a user wants to access each word - a new menu will open only when he hovers on it. the specification for the complete app is attached. the GUI expert work is to suggest the technology that will be used for this app/gui, and to show some examples and maybe to build a mockup. ## Deliverables app specification is attached. for this project - the gui technology recommendation is importatnt - taking into account the other work required, as detailed in the spec.