Drimsim

Most marketplaces in this category work by showing you a list of plans from different providers and letting you choose one. Drimsim takes a different approach: a single eSIM profile connects automatically to whichever of its more than 400 partner local operators covers your current location, across a network Drimsim says spans over 190 countries, so the marketplace logic happens behind the scenes rather than at checkout.

That structure pairs with Drimsim's pay-per-megabyte billing, you buy the SIM once for around €10, then draw down a balance based on actual usage rather than a fixed package, which suits someone crossing several countries on one trip who doesn't want to manage a separate plan for each. The balance itself doesn't expire as long as you connect at least once a year. It isn't the cheapest option for someone using a lot of data steadily, since per-megabyte billing adds up fast under heavy use, but for light, sporadic use across a lot of different countries, the automatic network switching does the comparison-shopping work a traditional marketplace would otherwise leave to you.