To celebrate Thunken's 2nd anniversary and our love of hypertext, we're extracting all citations from the Usenet Archive into Cobaltmetrics. Short service interruptions might occur during this period, and the number of search results for some queries might change as the corpus grows.

Altmetrics for all

Use any URL as an identifier, and summarize the attention surrounding your content.

Are your metrics alt- enough?

There is a severe lack of diversity in altmetrics, so we are setting the new standard for citation tracking.

The web is our corpus, and we index URIs and identifiers as first-class citations. We help you report on all types of content: publications, books, patents, trademarks, clinical trials, financial statements, security vulnerabilities, etc.

We go deeper than other altmetrics providers to produce a corpus that is balanced and inclusive. We mine data in over 180 languages, we unroll short URLs and proxy URLs from over 175 services, and we crack open URLs to extract persistent identifiers.

Login or register to get started, or see our statistics to learn more about Cobaltmetrics.

URI Transmutation!

Cobaltmetrics normalizes and converts types of URIs and persistent identifiers. Try it out!

 Cobaltmetrics stores identifiers as URIs, so every search term should consist of a scheme, a colon, and a value. For example, to search for RFC 3986, enter rfc:3986. All URLs are URIs, so you can also enter any URL into the search bar, and we will do our best to extract identifiers from it. For each term in the search bar, this widget displays all identifiers known to be equivalent to that term.

Cobaltmetrics API

Our API delivers clean, structured, and stable data, which you can integrate quickly and easily into a wide variety of software applications, including monitoring services and business intelligence solutions.

Our API allows you to extract normalized, machine-readable citation data from our databases. It also allows you to tap into the power of our URI transmutation engine on your own data. Login or register to dig into our data, or see the API documentation.

Bulk access to unfiltered data feeds is also available. Contact us for details.

Cobalt Papers

Do you want to know where Cobaltmetrics stands in the altmetrics movement, and what we want to push for?

Check out our latest stories on Medium: "Supporting Sci-Hub, one URL at a time", and "Altmetrics for all".