Photopea looks like a clone of Adobe Photoshop imo;and, it's a raster editing software and it's quite impressive to be fair.

https://scissor.studio/ is rather a vector first software that support raster editing as well; Also, it's not a replica/clone of an existing software. it has similar concepts and shortcut (for sake of helping user) however Scissor has many original Ideas (e.g. Isometric grid and grid shape maker, Perspective Grid, ... )