If you are able to spare the bandwidth and disk space required to run a full node, doing so helps keep the network stable and robust, and also affords you the maximum privacy Monero has to offer.
You have a choice of either the graphical user interface (GUI), which also includes a full node that is built into it, or a command-line interface (CLI) for dedicated or more lightweight systems.
You can read our guide on [running a Monero node](/getting-started/running), and the Monero core software can be downloaded from the [downloads page](/downloads).
The clients below are ideal if you are using Monero for the first time. They are also useful if you are on a device that cannot run a [full Monero node](/getting-started/running).