
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 Haseeb Ahmed·VFX
Images © Haseeb Ahmed. Used for product review; image policy.
Open Video Tracker is a photogrammetry based approach to video tracking in Blender, listed in the Superhive library, with support spanning versions 3.6 through 4.5 and coverage of the Blender Internal, Cycles, and Eevee render engines.
Open Video Tracker is a photogrammetry based video tracker released as an add-on for Blender by Haseeb Ahmed. It is listed as Blender extension compatible and supports Blender versions 3.6 through 4.5, covering a range of releases of the software.
The add-on works with the Blender Internal, Cycles, and Eevee render engines and is distributed under the GPL license. Documentation is provided, and a demo video is available for reference.
Within the Superhive library, Open Video Tracker is listed as a photogrammetry based tracking add-on for Blender. If you work across Blender 3.6 through 4.5 and want a tracker that fits that version span, the render engine coverage and included documentation are the details worth checking on the developer's page before installing.
Open Video Tracker is best for blender users working with photogrammetry based video tracking across versions 3.6 through 4.5.
Open Video Tracker is completely free to download and use.
Open Video Tracker supports Blender versions 3.6 through 4.5, so it covers that span of releases. It is also listed as Blender extension compatible and is distributed as an add-on. If you run a version within that range, it is meant to work with your setup. For versions outside 3.6 to 4.5, check the developer's page for the latest compatibility details before installing, since support can change with new releases of the software.
Open Video Tracker works with the Blender Internal, Cycles, and Eevee render engines. That coverage spans the engines listed for the add-on. If your project relies on Cycles or Eevee, the add-on names both among its compatible engines, alongside Blender Internal. For any specifics on how it behaves with a particular engine in your Blender version, the developer's page and included documentation are the places to look before you commit to it.
Open Video Tracker is listed as free here in the catalog, and it is distributed under the GPL license. Licensing terms can change over time, so for the current arrangement and any details around usage rights, check the developer's page directly. The GPL license also governs how the add-on can be used and shared, which is worth reviewing if you plan to modify or redistribute it as part of your own Blender workflow.
Open Video Tracker comes with documentation, which is listed among what the add-on provides. A demo video is also available for reference. Between the documentation and the demo video, you have material to look at before and during setup. For the most current versions of both, along with any guidance specific to your Blender release from 3.6 through 4.5, the developer's page is the place to start.

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