
LayerGenerators
by Motion Boutique
LayerGenerators is a collection of three tools for After Effects that automate the creation of layers. It carries a student and faculty discount and supports a broad range of After Effects versions.
by Creative Impatience·Workflow
Images © Creative Impatience. Used for product review; image policy.
Spanning After Effects CS6 through 2020, CI Master Thumbnailer covers a broad range of versions and includes preset-based naming and folder-structure replication for output.
CI Master Thumbnailer is a script from Creative Impatience for After Effects that generates thumbnails for compositions, layers and video clips. Output can be produced at a resolution expressed in pixels or as a percentage of clip dimensions, and at various proportions or as a center crop.
Frames can be captured at the start of the clip, at the end, at comp or clip markers, or at a given time expressed in seconds, frames or a percentage of total length. Thumbnails can also be spaced by a given amount of frames, seconds or percentage of total length, or divided into a number of equally spaced frames per clip. Output can be named with a custom scheme that can be saved as a preset, and saved to a given folder or subfolders replicating the project folder structure.
A recent addition lets you render composition layers to separate files and folders. Version 1.2.3 supports a wide span of After Effects releases, from CS6 through After Effects 2020, and a demo video is available.
CI Master Thumbnailer is best for after Effects users who need to generate thumbnails from compositions, layers and video clips.
CI Master Thumbnailer is completely free to download and use.
CI Master Thumbnailer lists compatibility with After Effects 2020, CC 2019, CC 2018, CC 2017, CC 2015.3, CC 2015, CC 2014, CC and CS6. That span covers older CS6-era projects through the 2020 release, so most timeline workflows across those versions are covered. Note that rendering at comp markers requires After Effects version 14.0 and higher, per the changelog. Check the developer's page to confirm the current version against your installed release of After Effects.
CI Master Thumbnailer can capture at the start of the clip, at the end, at comp or clip markers, or at a given time in the clip expressed in seconds, frames or as a percentage of total length. It can also space thumbnails by a given amount of frames, seconds or percentage of total length, or divide a clip into a number of equally spaced frames. These options give you several ways to control which frames become thumbnails.
CI Master Thumbnailer names thumbnails with a custom scheme that can later be saved as a preset, so you can reuse a naming pattern across projects. Output can be saved to a given folder, or to subfolders replicating your project folder structure. A recent addition also lets you render composition layers to separate files and folders. Together these options let you organize generated thumbnails to match how your project is arranged.
CI Master Thumbnailer is listed as free in this catalog. Licensing terms can change over time, so check the developer's page at Creative Impatience or its aescripts listing for the current details before you download. Version 1.2.3 was last updated on 2020-07-25, and that release included a fix so a comma in a composition name no longer causes the render to fail. A demo video is also available for the tool.
Also in Workflow for After Effects.

by Motion Boutique
LayerGenerators is a collection of three tools for After Effects that automate the creation of layers. It carries a student and faculty discount and supports a broad range of After Effects versions.

by Ciaran Duffy
SnapKey is an After Effects tool for capturing, blending and reusing animation states. Save a complex setup across multiple layers as a single Snap, then recall or blend between saved states at any time.

by Victoria Nece
Take This is an After Effects script that stores and swaps layer transforms and expressions. It offers a straightforward way to capture transform and expression data and reapply it across layers.

by The Drawing Room
Obsessive Layers 2 is a layer-trimming tool for After Effects that trims layers to keyframes, markers, track mattes, parents, children, selection, visibility, and composition bounds. It has been discontinued in favour of Fresh Trim.

by Casey Baker
Smart Selector is an After Effects plugin for picking layers by clicking directly on what you see. It sees through bounding boxes, adjustment layers, precomps and layer transparency to find the layers you point at.

by Salt Media
BlenderAe2 by Salt Media transfers 3D data and objects between Blender and After Effects in both directions, covering vertices, 3D layer transforms, camera data and layer synchronization.

by MAXON
Maxon One from MAXON bundles tools like Cinema 4D, ZBrush, Redshift, Red Giant and Maxon Studio into a unified ecosystem, letting artists move between applications and Adobe hosts such as After Effects and Premiere Pro without friction.

by MotionLand
AEVIEWER 2 is a media browser for After Effects and Premiere Pro from MotionLand. Preview, apply, and import projects and media files in one click. Listed here as free.

by MAXON
Maxon Teams Annual Subscription Licensing is a one-year named-user plan for teams working across After Effects, Cinema 4D, and Premiere Pro. It provides access to Cinema 4D, Redshift, ZBrush, and Red Giant's creative tools.

by Motion Array
Motion Array is an extension for After Effects and Premiere Pro that brings its library of templates, stock video, royalty-free music, and more into your Adobe Creative Cloud apps for one-click download and import.

by Thomas Zagler - pixelsucht.net
Free Stock Search is an extension for After Effects and Premiere Pro that searches unsplash.com, pixabay.com, and pexels.com for free stock photos, then downloads and imports a chosen image with one click.