Editing Point Cloud for Bare Earth Model

Has anyone been able to find a free online software for editing a point cloud to produce a bare earth model? Pix 4D seems to be sort of cumbersome for editing a point cloud to this extent.

Dear Calen, 

You can have a look at our Classification Tool. It is still in beta, but will allow you to sort the points from the point cloud in two groups: object and terrain. You can then generate a Digital Terrain Model

https://support.pix4d.com/hc/en-us/articles/202560579

Best regards,