# Reviews

### [Opensea](https://opensea.io/)

* the world’s largest and most popular NFT marketplace
* check the rarity of both Polygon and Ethereum NFTs

<figure><img src="https://3454170143-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiNImVijj05X0LEyWlQLW%2Fuploads%2FbglbnqLdgwaJgajndc5J%2FScreenshot%202023-05-09%20at%2015.42.40.png?alt=media&#x26;token=a6ec71cd-8843-4c20-8fc4-835871785fac" alt=""><figcaption></figcaption></figure>

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* pleasing-looking interface to determine trending collections and make an informed decision
* NFT rarity rankings are based on volume, floor prices, and other factors
* advanced filtering to find rare NFTs with very specific attributes
* overall rarity rank or rarity score isn’t available
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* [**Website**](https://opensea.io/)
* [**Twitter**](https://twitter.com/opensea)
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### [Polyrare](https://polyrare.com/)

* discover popular NFT projects on the Polygon blockchain
* view rarity rankings, volume, market cap, and more

<figure><img src="https://3454170143-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiNImVijj05X0LEyWlQLW%2Fuploads%2FS6Zl6yJZWojoW8yNHAU1%2FScreenshot%202023-05-09%20at%2015.53.04.png?alt=media&#x26;token=3b9efe0f-7615-4097-af7e-4b2ad795d0bb" alt=""><figcaption></figcaption></figure>

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* login via Discord
* filter Polygon collections' rarity by volume, market cap, floor and more
* filter individual collections by traits
* overall rarity rank or rarity score is available
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* [**Website**](https://polyrare.com/)
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