Altmetrics are a way of evaluating impact based on more than just citation counts.
Altmetrics can help researchers understand how their outputs are being shared and discussed via social media and online and may supplement the information gained from traditional impact metrics.
Some of the companies developing altmetric tools and products are listed on this page.
Altmetric.com watch a range of social media sites, newspapers, government policy documents and other sources for mentions of scholarly articles. Altmetric tracks what people are saying about papers online.
ImpactStory is an open-source, web-based tool that helps researchers explore and share the diverse impacts of all their research products, from traditional ones like journal articles, to emerging products like blog posts, datasets, and software.
Impactstory is now a subscription product, charging an annual or monthly fee (from August 2014)
Plum Analytics is aimed at helping institutions understand the influence of their researchers’ work by using newer alternative metrics, called altmetrics, alongside traditional measures of research impact
Plum Analytics tracks more than 20 different types of 'artifacts', including journal articles, books, videos, presentations, conference proceedings, datasets, source code, cases, and more.
Plum Analytics is a subscription based product, and in January 2014, was bought by EBSCO.