I've used these and have in the past recommended them. They are still good, solid 'work-horses' for a User having limited desires and an older computer which might struggle with newer Puppys. But there are now newer, more capable Puppys better suited for most needs. Although they appear in the Mainline Section, they are no longer maintained and some of the repositories their Puppy Package Managers once were able to access are now archived. Their continued presence in the Mainline Section can only serve to confuse those new to our Forum that they are still generally recommended. New Users guessing wrongly waste their own time and that of Forum participants trying to obtain an operating system meeting their needs.
Of course, this is rockedge's Forum. I don't know how difficult it might be to move all associated threads from the Mainline to the Mainline>Legacy Section. So, of course, he should have the last word.
The Puppys I have in mind are:
Bionic, both 32 and 64 bit
dpup-Stretch
TahrPup, both 32 and 64 bit
XenialPup, both 32 and 64 bit.
Other than that the S15Pups are still maintained, I am not sufficiently familiar with the older Slackos to suggest whether or not they also should be moved.
What do you think?