Ultimaker Cura
Most popular 3D printing slicer by Ultimaker
Slicer bench notes
There is no universal “best slicer.” The better question is which one matches your patience, printer profile, and appetite for tuning. Here is the short version before you spend an evening moving the same Benchy through three apps.
Most popular 3D printing slicer by Ultimaker
Start here if you want the familiar default choice, huge community answers, and broad printer support.
Advanced 3D printing slicer by Prusa Research
Pick this if you like a tidy, engineering-minded workflow and want strong profiles without too much hand-holding.
Advanced slicer for power users with rapid development
Try this if you enjoy tuning, calibration helpers, and a faster-moving power-user slicer.
Cura is often the easiest first stop because it is widely used and there are many tutorials. PrusaSlicer is also friendly if your printer has a good profile. OrcaSlicer is powerful, but it makes more sense once you are comfortable changing settings.
Yes. Many makers keep two slicers around, but it is better to learn one well before comparing every setting across three apps.
The three slicers compared here are listed as free in the printer.tools directory.