Currents was customizable in terms of content selection and was a minimalist reader for my chosen content.
The database right generally requires the use of a substantial part of a database or, where only insubstantial parts are used, that the use is repeated and the systematic character is equivalent to the use of a substantial part.
The depth of chronological coverage varies; beginning in 2008, the entire content of the back to its founding in 1851 has been available.