Journal impact factor (JIF) - calculates the average frequency that an article in a particular journal has been cited in the 2 years since its publication. Based on Web of Science content.
Eigenfactor - provides Eigenfactor scores for journals based on JIFs and Article Influence scores; this system sums all scores to 100 and provides an individual journal score that measures its influence
SNIP (Source Normalized Impact per Paper) - one of several indicators provided by Leiden University; SNIP takes into account differences in citation practice between disciplines and also provides a stability index to show how the indicator varies over time for a specific title. Based on data from Scopus.
SciMago journal rank (SJR) -also based on Scopus, this ranking system weights citations based on the prestige of the citing journal - read more here.
Altmetrics: Scholars are used to traditional metrics like citation counts and journal impact factors - alternative metrics (altmetrics) are a suite of tools and measures that seek to define the influence and impact of a scholarly work in other ways which often includes social media.