UFBoot (ultrafast bootstrap approximation) is a software tool for bootstrapping phylogenetic trees and phylogenetic data resampling. UFBoot is in the IQ-TREE package.


Phylogenetics;Sequence analysis;Evolutionary biology


  • Operation: Phylogenetic tree analysis

  • Software interface: Command-line user interface

  • Language: C++, Python

  • License: GNU General Public License v2

  • Cost: Free

  • Version name: Latest: 2.2.0, Stable: 1.6.12

  • Credit: Vietnam National Foundation for Science and Technology Development, Austrian Science Fund—FWF.

  • Input: -

  • Output: -

  • Contact: Bui Quang Minh minh.bui@univie.ac.at, Le Sy Vinh vinhls@vnu.edu.vn

  • Collection: IQ-TREE

  • Maturity: Mature


  • UFBoot2: Improving the Ultrafast Bootstrap Approximation.
  • Hoang DT, Chernomor O, von Haeseler A, Minh BQ, Vinh LS. UFBoot2: Improving the Ultrafast Bootstrap Approximation. Mol Biol Evol. 2018 Feb 1;35(2):518-522. doi: 10.1093/molbev/msx281. PMID: 29077904; PMCID: PMC5850222.
  • https://doi.org/10.1093/molbev/msx281
  • PMID: 29077904
  • PMC: PMC5850222

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