You would use Fluffy to interact with the Portal Network. This gives access to Ethereum data with very low CPU and memory requirements and near instant sync.
Fluffy is still in active developmenmt - it is not ready for production use!
You can download Fluffy from the project Github (opens in a new tab).
You can read the notes in the Github README (opens in a new tab)!
There you will find instructions for installing, running and interacting with Fluffy for your operating system.
Monthly development updates are made available on the project HackMD (opens in a new tab).