How could a free (i.e. free content) alternative for MathSciNet and Zentralblatt be created?
Comments
Some mathematicians have stopped writing reviews for MathSciNet because they feel their output should be freely available. (The Pricing for MathSciNet is not high, but it is not the point.)
Two related questions: Are there any good websites...Are there any good websites... and Errata database?Errata database?; see also r-forum, nLab and wikademic.
What can be done (based on answers below)
One thing that can be really useful and doable is to create (and maintain) a database of articles (and maybe abstracts), where you can find all the articles that were referring to a given one.
Once it is done we can add lists of errors --- it will add something new and valuable for the project (but this will take a while).
The above two things might be already enough for practical purpose. It will be even better if it will attract enough reviewers to the project.