
Fluid Painter
by Mk3dLab
Fluid Painter is a Blender add-on that uses Geometry Nodes to paint fluids over any 3D surface with a curve. It ships with 30+ presets compatible with Eevee and Cycles.
by Inlet·VFX
Images © Inlet. Used for product review; image policy.
Particle Groups For Particle Systems earns its place in the superhive library for turning several particle systems into one copyable group, with shared values that propagate across copies and the option to ungroup when a group needs its own settings.
Particle Groups For Particle Systems is a Blender add-on from Inlet that gathers several particle systems into a single group. Instead of adjusting each system on its own, you work with the group as one unit that can be modified, duplicated, and looped.
Within a group you can set when certain particles start, define the total length of the Particle Groups, and create a loop. To change a specific particle system, you edit the original one used to build the group, and that feeds through to your results. Copies made from a group inherit the same values as the original, and editing any value on a copy or the original updates all the linked groups at once. When you want a group to stand on its own, you can ungroup a selected group so it follows its own new values.
Documentation is included, and a demo video is available. The add-on runs across Blender 2.79 through 4.5 and is distributed under the GPL license.
Particle Groups For Particle Systems is best for blender artists building visual effects who want to group, duplicate, and loop multiple particle systems as a single unit.
Particle Groups For Particle Systems is completely free to download and use.
Particle Groups For Particle Systems supports Blender versions 2.79 through 4.5, so it covers a wide span of releases from older builds to current ones. If you're running a version within that range, the add-on is designed to work with your setup. For confirmation on the exact build you're using and any version-specific notes, the developer's page is the best place to check before installing. The listing is distributed under the GPL license.
Particle Groups For Particle Systems is listed as free here in the catalog, though it carries a GPL license on the developer's side. Licensing terms and any current pricing can change over time, so the developer's page is the most reliable source for the latest details before you download. The GPL license generally allows use and modification within its terms. If licensing matters for your project, review those conditions directly on the developer's page rather than relying on this summary alone.
Particle Groups For Particle Systems lets you edit an individual particle system by modifying the original one you used when combining systems into a group. That original acts as the reference, so adjustments flow from there. Copies you make from a group inherit the same values as the original, and changing any value on a copy or the original updates all the linked groups together. If you need a group to follow its own settings, you can ungroup a selected group so it becomes a new, independent group.
Particle Groups For Particle Systems reached version 1.5, which brought a couple of specific changes. The 'Generate and Bake All' action no longer deletes particle systems that weren't added by the script, so systems outside the tool stay intact during that operation. Data-linked copies of Particle Groups also no longer need to be unlinked to spawn at different times, since their start times are now independent of one another. Earlier releases added an 'add new' button to the Target particle group and refined how the data is structured.

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Fluid Painter is a Blender add-on that uses Geometry Nodes to paint fluids over any 3D surface with a curve. It ships with 30+ presets compatible with Eevee and Cycles.

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