While you may see "free download" links for version 1.6.1 on third-party sites or Google Docs, it is important to note:
Cell Fluids is a paid commercial addon . The current official price is $25 (recently increased from $20 with the release of version 2.0) . Cell Fluids V1.6.1 For Blender Free Download
is a popular Geometry Nodes-based addon for Blender created by developer Shahzod Boyhonov (Specoolar) . It is designed for fast, "semi-realtime" fluid simulations using a 2.5D height-field approach rather than traditional, heavy particle-based systems . Version 1.6.1 Overview While you may see "free download" links for version 1
covers the latest updates and technical breakthroughs in Specoolar's development. CG Channel for version history and release notes for 1.6 and beyond. within the Cell Fluids domain? Cell Fluids addon: Review & Tutorial Cell Fluids V1.6.1 For Blender Free Download