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Feature checklists make every tool look equivalent. This table leads with the three things that actually differ — what it costs you before it works, whether your files leave your device, and where the free version stops.
| OpenStreetMapopenstreetmap.org | Citymappercitymapper.com | Flightradar24flightradar24.com | |
|---|---|---|---|
| What it does | A map of the world anyone can correct, and everyone else can reuse | Public-transport directions that tell you which carriage to stand in | Shows aircraft moving in real time, with the tail number and where it came from |
| What it costs you | No sign-upWorks the moment the page loads. No account, no email, no trial. | No sign-upWorks the moment the page loads. No account, no email, no trial. | Free tierA genuinely usable free tier with paid plans for volume or team features. |
| Your files | Runs on their server | Runs on their server | Runs on their server |
| Where it stops | It is a map and an editor, not a navigation app — there is no live traffic and no turn-by-turn guidance on the site itself. | Only about a hundred cities are supported — outside them it has nothing to offer. | The free tier carries ads and keeps only about seven days of flight history; longer playback, filters and weather layers need a subscription. |
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| Category | Maps & Travel | Maps & Travel | Maps & Travel |
| Last checked | 2026-07-29 | 2026-07-29 | 2026-07-29 |
| Open the site | Open | Open | Open |
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