Path Visualizer is an After Effects plugin from Plugin Everything that draws vertices, beziers and handles based on your text or paths. The drawing updates live with any animation. It lends itself to technical and blueprint styles.
The plugin supports a wide range of After Effects versions, from CS6 through the 2026 release. It first shipped in 2019. A later update added a Solo Vertex stroke option and support for multi-frame rendering in After Effects 2022. Version 1.2.1 introduced a universal binary for Apple Silicon (M1 and later) along with a bug fix, and version 1.2.2 updated the license framework.
Path Visualizer is listed here as free, and a demo video is available. For current licensing details, check the developer's page.