meshoptimizer
A C++ mesh processing library for vertex-cache and fetch optimization, simplification, meshlet generation, quantization, compact compression, and analysis of real-time geometry.
Why use it
It can measurably reduce vertex work, memory bandwidth, and download size in custom engines, glTF pipelines, and build systems for large or streaming worlds.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
Optimization order and error thresholds affect silhouettes, skinning, and attributes; establish per-asset benchmarks and visual regression, and ship a matching runtime decode path for compressed data.