Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Informatics maintains its standards for the high quality of its published papers. Thanks to the cooperation of our reviewers, in 2020, the median time to first decision was 18.4 days and the median time to publication was 39 days. The editors would like to express their sincere gratitude to the following reviewers for their precious time and dedication, regardless of whether the papers were finally published:
| Adege, Abebe Belay | Mackey, Isaac |
| Ahmed, Mohiuddin | Maestre Vidal, Jorge |
| Alic, Lejla | Mantzaris, Alexander V. |
| Alizadehsalehi, Sepehr | Marcum, Christopher Steven |
| Al-Matarneh Sattam, Mohammad Ata | Marino, Vittoria |
| Ang, Eng Tat | Marques, Goncalo |
| Arjona, Joaquín Osorio | Martínez Peláez, Rafael |
| Armstrong, Paul | Martini, Michele |
| Awedat, Khalfalla | Martin-Rodilla, Patricia |
| Baležentis, Tomas | Mascio, Tania Di |
| Barreda-Ángeles, Miguel | Maskeliūnas, Rytis |
| Bartal, Alon | Mather, Carey |
| Basile, Valerio | Matos, Adriana |
| Bassani, Maddalena | Mayala, Ben |
| Baum, Seth | Mcheick, Hamid |
| Benítez Andrades, Jose Alberto | Mekterović, Igor |
| Bernardino, Jorge | Mendes, Jérôme |
| Beus, Jonathan | Meng, Weizhi |
| Binh, Nguyen Ngoc | Meng, Xiaoliang |
| Błachowicz, Tomasz | Michalas, Antonis |
| Bragazzi, Nicola Luigi | Mikulecký, Peter |
| Brandão, Alexandre | Milani, Alfredo |
| Buchel, Beda | Miłkowski, Marcin |
| Bucher, Sherri L. | Minussi, Carlos Roberto |
| Calzada, Igor | Mkaouer, Mohamed Wiem |
| Casadei, Roberto | Mueller, Wolfgang |
| Cefalo, Raffaela | Mundani, Ralf-Peter |
| Chen, Jingfeng | Najafabadi, Mahdi |
| Chen, Tinggui | Naranjo-Hernández, David |
| Chen, Yulin | Narayanan, Barath |
| Chung, Young Mo | Navas-Delgado, Ismael |
| Cieślik, Błażej | Navia, Marlon |
| Colace, Francesco | Necula, Sabina |
| Corrales-Serrano, Mario | Nitzke, Jean |
| Covarrubias, Mario | Noguchi, Yoshihiro |
| Crippa, Paolo | Noori, Farzan Majeed |
| Cronkite, Ruth C. | Olivieri, David N. |
| Ćwiąkała, Paweł | Onye, Uriel Uzochukwu |
| D’Adamo, Idiano | Orasan, Constantin |
| Damasevicius, Robertas | Ortale, Riccardo |
| De Almeida, José João | Paganelli, Federica |
| De Bruyckere, Pedro | Pagliaroli, Tiziano |
| De Farias, Claudio Miceli | Palos-Sánchez, Pedro |
| Defauw, Arne | Pavlidis, Ioannis |
| Demidova, Liliya A. | Paweł, Dymora |
| Dibitonto, Massimiliano | Pellegrino, Maria Angela |
| Dirin, Amir | Peltonen, Laura-Maria |
| Donaj, Gregor | Peng, Lihong |
| Du Plessis, Paul | Perikos, Isidoros |
| Dudycz, Helena | Pikhart, Marcel |
| Dzwierzynska, Jolanta | Poniszewska-Maranda, Aneta |
| Esposito, Gianluca | Pushpalatha, M. N. |
| Falaschetti, Laura | Raghothama, Jayanth |
| Fencik, Robert | Ramanathan, Manoj |
| Feng, Xiang | Ramírez-Rojas, Alejandro |
| Férnandez-Batanero, Jose M. | Ravat, Franck |
| Ferreira, Thiago Castro | Reis, Catarina |
| Fietkiewicz, Kaja J. | Rettieva, Anna |
| Fiorentino, Maria Chiara | Ribeiro, Sergio Silva |
| Frediani, Alexandre Apsan | Rizzardi, Alessandra |
| Fu, Xiuwen | Rojas Sola, José |
| Fukumoto, Fumiyo | Rothkrantz, Leon |
| Gallego-Durán, Francisco J. | Rousi, Rebekah |
| Galliot, Sébastien | Saeed, Nagham |
| Gao, Yizhao | Saenz-Cogollo, Jose Francisco |
| Garcia-Herrero, Francisco | Safarov, Igbal |
| Garg, Harish | Saia, Roberto |
| Gh. Popescu, Cristina Raluca | Sáiz Manzanares, María Consuelo |
| Giannakis, Konstantinos | Sánchez-Rodríguez, José |
| Goldstein, Justin C. | Saura Lacárcel, José Ramón |
| Gonçalves, Eder Mateus Nunes | Sauter, Marian |
| Gonzalez-Perez, Cesar | Schaeffer, Moritz |
| Gonzalo, Carlos | Schoeman, Marthie |
| Gore, Teresa | Sederevičiūtė-Pačiauskienė, Živilė |
| Gostkowski, Michał | Sellami, Akrem |
| Goyal, Rinkaj | Senhadji-Navarro, Raouf |
| Grivokostopoulou, Foteini | Shahab, Sina |
| Guharay, Sabyasachi | Shameer, Khader |
| Guillem, Anaïs | Shamir, Lior |
| Gupta, Itika | Shao, Dangdang |
| Gürdür Broo, Didem | Signorelli, Gabriel Ruiz |
| Habiballa, Hashim | Sik-Lanyi, Cecilia |
| Hadley, James | Sitompul, Taufik Akbar |
| Haenssgen, Marco J | Skarzauskiene, Aelita |
| Hernández, Alfredo | Söbke, Heinrich |
| Hernández-Torruco, José | Soliman, Ahmed |
| Herrera-Alcántara, Oscar | Song, Xingzhe |
| Hidalgo-Herrero, Mercedes | Sousa-Silva, Rui |
| Hong, Ilyoung | Sperlì, Giancarlo |
| Hsieh, Chang-Wei | Stasis, Antonios CH. |
| Hu, Fei | Støle, Hildegunn |
| Huang, Tony | Sztanke, Krzysztof |
| Huo, Yiming | Tada, Mitsunori |
| Hussain, Niamat | Tan, Sheng |
| Iacob, Ionut Emil | Teixeira, Carlos S.C. |
| Immich, Roger | Telea, Alex |
| Islam, Nahina | Theodorou, Vasileios |
| Jiang, Chaoyang | Tiffany, Jone |
| Jiang, Shan | Tijus, Charles |
| Jones, Edward L. | Tlelo-Cuautle, Esteban |
| Kafle, Ved | Tochinai, Fumihiko |
| Kalogiannakis, Michail | Tondello, Gustavo |
| Karakatič, Sašo | Toranzo, Irene V. |
| Khan, Rizwan Ahmed | Tordesillas, Antoinette |
| Khushi, Matloob | Trana, Rachel E. |
| Kibis, Eyyub | Tu, Zhigang |
| Kinnunen, Ulla-Mari | Vale, José |
| Klein, Michel | Vállez, Mari |
| Kohwalter, Troy Costa | Velasco Gonzalez, Veronic |
| Kolar, Davor | Venkatraman, Sitalakshmi |
| Koltsov, Sergei | Verkuyl, Margaret |
| Koponen, Maarit | Viriri, Serestina |
| Kotsiantis, Sotiris | Walters, Robert |
| Kožuh, Ines | Wang, Juanle |
| Kyrarini, Maria | Wang, Kai |
| Lai, Yuan | Wenskovitch, John |
| Larsson, Urban | Wilkinson, Christopher |
| Lawnik, Marcin | Witczak, Marcin |
| Lee, Ming-Hsuan | Wróblewski, Łukasz |
| Lee, Seonah | Wu, Ching-Seh |
| Leng, Jiewu | Wu, Jianfeng |
| Leopold, Jane A. | Yaco, Sonia |
| Lewis, Karin A. | Yin, Shen |
| Li, Hui | Youdale, Roy |
| Li, Yang | Yu, Fei |
| Liao, Huchang | Zennaro, Fabio Massimo |
| Liu, Leo | Zhang, ChaoKun |
| Lizama-Pérez, Luis Adrian | Zhang, Lijun |
| Lopes, Waslon | Zhang, Wenjia |
| López-Becerra, Erasmo Isidro | Zhang, Xiaochen |
| Lu, Yang | Zhao, Hai |
| Luo, Brooke | Zhou, Bing |
| Ma, Jing | Zhou, Xuemei |
| Ma, Xignpo | Zuckerman, Inon |
| Ma, Zhenzhong |
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