Is this project still maintained and if not what are some alternatives?

[favna]

This project has an increasing amount of issues and PRs, various of which go unanswered by @iamhosseindhv. It is unclear to the users in which state of maintenance this library is and as it is the only third party library currently recommended by the Material-UI documentation (https://mui.com/material-ui/react-snackbar/#notistack) that is very concerning because many people with gravitate to this library.

It would be good for everyone that there is a clear vision on the future of this library. If the intention is to keep maintaining it then can @iamhosseindhv please chime in here. If the reason for the lack of maintenance is lack of time, I would strongly recommend looking for other developers who can take some of the weight of the shoulders of the current developer(s).

[erisnuts]

I consider to migrate to https://github.com/fkhadra/react-toastify