The editors of Life would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2013:
| Adamatzky, Andrew | Holm, Nils G. | Pletser, Vladimir |
| Barbieri, Roberto | Hubera, Harald | Rachel, Reinhard |
| Benner, S. A. | Panagiotopoulos, I. A. | Rengel, M. |
| Bowden, Stephen | Islam, Saidul | Russell, Michael J. |
| Bremer, Erhard | Itoh, Takashi | Sandoval, Georgina |
| Brown, Grant E. | Jebaraj, Cathrine Sumathi | Sanz, José Luis |
| Burton, Aaron S. | Klatt, Christian G. | Savka, Michael A. |
| Carter-Bond, Jade C. | Kochetkova, Tatiana V. | Schild, Rudolf E. |
| Cataldo, Franco | Kohls, Katharina | Schloemann, Michael |
| Chalmers, J. | Kolb, Vera | Schüler, Dirk |
| Cintas, Pedro | Könnyű, Balázs | Schwartz, Alan |
| Clark, Torin K. | Lauga, Beatrice | Selbmann, Laura |
| Corcelli, Angela | Li, Yi-Liang | Sephton, Mark |
| Da Luz, M. G. E. | Lins, Ulyssis | Servín-Garcidueñas, Luis E. |
| Danchin, Antoine | London, Robert E. | Sheldon, Robert B. |
| Di Mauro, Ernesto | Lovejoy, Connie | Simpson, H. N. |
| Durston, Kirk | Lowenstein, Tim K. | Smith, Mark A. |
| Falteisek, Lukáš | Ma, Edmond Dik-Lung | Sodupe, Mariona |
| Forgan, Duncan | Maeng, Pil Jae | Tian, Ge |
| Foster, Jamie S. | Mann, Stephen | Ugliengo, Piero |
| Frankel, Richard | Martel, Jan | Vargas, Carmen |
| Gentili, Pier Luigi | McIntosh, Professor Andy | von Bloh, Werner |
| Gonzalez, Juan | Mills, Kenneth V. | Wang, Wei |
| Goswami, Nandu | Newstead, Simon | Williams, Timothy |
| Haghighipour, Nader | Pagaling, Eulyn | Wylezich, Claudia |
| Hässig, M. | Pansé, Vikram | Zhou, Pei |
| Heeb, Stephan | Pascal, Robert | |
| Higgs, Pg. | Pilat-Lohinger, Elke |
© 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).