CCB » Software » Kraken2

Kraken 2 Databases

As of September 2020, all available Kraken2 indices will be hosted on the following Amazon Web Services site: This website will be frequently updated with the most widely used Kraken2 indices.

Kraken 2 Code Download

  • Source (99 KB): Kraken2's source code and README. The current official version of Kraken 2 is v2.0.8-beta (released April 25th, 2019). However, additional fixes/changes are in the newest github version.
  • The source code for the current release and the newest version are both available at the Kraken 2 GitHub repository.

Pre-built Kraken 2 Databases

These additional databases have been provided by non-CCB labs: