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Altmetrics & Academic Social Media: Academic Social Networking/Open Access

Feature comparison

 





Strengths/Focus

mainly Arts & Humanities

Sciences

Physics, Mathematics, Computer Science, Nonlinear Sciences, Quantitative Biology and Statistics

 It's up to you

Sign in/Link with Facebook?

Yes

Yes

No

No

Cost

Free

Free

Free

Free

Mobile

No

No

No

No

Tagging/Following

Yes

Yes

Yes

Yes

Year launched

2008

2008

1991

2011 (?)

Current membership

2,626,807

2.7 million 7+ million (?) could not verify

Number of documents

1,649,326

10+ million 837,694 could not verify