- Artificial Intelligence 2,120
- Science, Humanities and Social Sciences, multidisciplinary 1,527
- Science, multidisciplinary 1,386
- Computer Communication Networks 1,209
- Information Systems Applications (incl. Internet) 1,119
- Elementary Particles, Quantum Field Theory 971
- Quantum Field Theories, String Theory 970
- Cell Biology 965
- Biochemistry, general 954
- Biotechnology 945
- Life Sciences, general 941
- Image Processing and Computer Vision 839
- Biomedicine, general 837
- Plant Sciences 781
- Characterization and Evaluation of Materials 764
- Microbiology 716
- Materials Science, general 715
- Oncology 713
- Nanotechnology 699
- Data Mining and Knowledge Discovery 697