What is the difference between gems CanCan and Sipsap?

What is the difference between these two gemami?
I understand CanCanCan is supported by the user community?
September 19th 19 at 00:26
1 answer
September 19th 19 at 00:28
The first died and is not supported by 4 rails. The second works everywhere.
I understand CanCanCan - is the same as the first, only developed by the community. - eriberto_Homenick52 commented on September 19th 19 at 00:31

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