Kovah

If you would like to keep all your data private, self hosting is a good option.

- LinkAce (https://www.linkace.org)

- Linkding (https://github.com/sissbruecker/linkding)

- Wallabag (https://github.com/wallabag/wallabag)

- Buku (https://github.com/jarun/Buku)

- Linkwarden (https://github.com/Daniel31x13/link-warden)

tga
My favourite self hosted option so far because it's fairly minimal but does offline archiving:

- Shiori (https://github.com/go-shiori/shiori)