There are many options platforms across both CeFi and DeFi. Each offer different options schedules (expiries, strikes). However, to compare the prices across exchanges you must use many different UIs which is not ideal for users. Arbitrium is an options aggregator which consolidates prices for both DeFi and CeFi options.
How It's Made
We used react on the frontend for the UI. for fetching prices we used both ethers and websockets to fetch prices across both centralised exchanges and decentralised exchanges. we didnt manage to finish the project by hooking the prices to the UI but we will continue this project.