mui/material-ui

Prefer this fork only if you specifically want its older experimental MUI/Pigment CSS direction and custom demo tooling. For most adopters, upstream is the better choice because this fork is stale and materially behind current maintenance.

Choose this fork only if you need its custom theming/docs behavior and can afford ongoing merge work. If you want the safest, most up-to-date MUI baseline, upstream is the better default.

Choose this fork only if you want an older, highly customized Material-UI snapshot and value the Framer/benchmark artifacts more than ongoing upstream compatibility. For most adopters building a modern React product UI, upstream is the safer choice.

Choose this fork if you want a customized, older MUI base with extra docs/theme/demo workflows and can absorb significant merge debt. Avoid it if you want to stay close to current upstream Material UI or depend on fast upstream updates.

Choose this fork only if you explicitly need a frozen legacy Material-UI base or its custom design/benchmark assets. For most adopters, upstream is the better choice because it is actively maintained and far ahead in fixes, tooling, and ecosystem support.

Choose this fork only if you need the older, customized Material-UI snapshot and can own the maintenance burden. For new work, the stale activity and major divergence make upstream a much better starting point.

Choose this fork only if you specifically need its older baseline or Framer-oriented customization path. For most adopters, upstream MUI is the better choice because it is current, actively maintained, and far less risky to adopt.

Choose this fork only if you need its healthcare-specific behavior and can accept a frozen, deprecated codebase. For most adopters, upstream Material UI is the safer and more maintainable baseline.

Choose this fork only if you specifically need its early Joy/customization work or want to continue from an old MUI snapshot. For most adopters, upstream is the better default because it is far more active and much more current.