SAI’s line smoothing (stabilizer) is legendary. While other programs have copied it, none have replicated the "natural" feel of SAI’s engine. It removes jitter without lag, making line art clean and crisp.

**SAI 2,

A portable application is a self-contained folder that requires no installation, no admin rights, and leaves no trace on the host computer. It resides entirely on a USB stick, an external SSD, or a cloud-synced folder (like Dropbox or Google Drive).

This tells SAI to save all your settings (brushes, swatches, preferences) inside a local folder called "UserSettings" on the USB drive, rather than on the host computer.