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