GNU Taler seems totally obsoleted by something like Monero. Can anyone enlighten me on the advantages of Taler?
It requires a central authority.
It seems distinctly less useful than bitcoin. And I despise bitcoin.
The technical differences are too many for me to enumerate here. They are completely different technologies that make different efficiency-privacy-decentralization tradeoffs.
Functionally, Taler (and other forms of chaumian cash) are payment systems and not currencies. It requires a bank to implement it, in this sense it is less de-centralized, but likely much more efficient as there is no need for network consensus (because it depends on a central entity's blind signatures, etc. anyway). It has different (possibly better) privacy charichteristics than monero. They are both free and open source projects.