✘ No parametric piping; manual placement of cylinders as pipes. ✘ No automatic clash detection. ✘ Limited to 8 GB RAM usage (32-bit version). ✘ No longer officially supported, but stable.

✘ Free version requires academic proof. ✘ No commercial use. ✘ Large installer (~2 GB).

✔ Very lightweight. ✔ Good for schematics + basic 3D.

✘ No dedicated ISO extraction (manual isometric views). ✘ Steep learning curve for piping logic. ✘ Slower with large plant models (100+ pipes).

✘ Not for pipe stress or large equipment.