> For the complete documentation index, see [llms.txt](https://whitepaper.letmespeak.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.letmespeak.org/technology/building-blocks.md).

# Building blocks

There are several key components to the LetMeSpeak metaverse**:**

* Learning Apps ([Web](https://web.letmespeak.org/), [iOS](https://apps.apple.com/us/app/letmespeak-learn-english/id1478889848?l=en), [Android](https://play.google.com/store/apps/details?id=org.letmespeak)) 
* NFT characters and other NFT assets
* Decentralized marketplace 
* Decentralized token exchange 
* In-game / Governance tokens

<figure><img src="https://3129244495-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FO0xshu7tuQO3163f49b6%2Fuploads%2FjcWwhgiu03lijGtZsBC0%2FSolana.png?alt=media&amp;token=ca9f0531-45fe-4943-9805-cf7c7cac6a5e" alt=""><figcaption></figcaption></figure>