Since TotalFinder does not launch with System Integrity Protection under El Capitan.
I decided to compile a list of alternatives for users who are looking for a replacement.
The direct alternative XtraFinder has the same problem as TotalFinder. It won’t run without SIP disabled.
I came across this brand new file manager Commander One, which looks promising, give it a try!
Path Finder is 50% OFF for TotalFinder users
The promotion works by entering the coupon code
TOTALFINDER at their online store: https://store.cocoatech.com. Available until the end of October 2015.
I plan to update this post with more alternatives. Please don’t be shy and propose your own tips.