ABNER (A Biomedical Named Entity Recognizer) is for molecular biology text analysis. At ABNERs core is a statistical machine learning system using linear-chain conditional random fields (CRFs) with a variety of orthographic and contextual features.

ABNER Features:
1. Simultaneously recognize multiple named entities (2 trained models included).
2. Intuitive, interactive user interface.
3. Optional built-in tokenization and sentence segmentation algorithms, robust to wrapped lines and biomedical abbreviations.
4. Open text files and save annotations (SGML, IOB, and ABNER formats supported).
5. Directory-recursive batch annotation of text files.
6. Java API to incorporate ABNER into customized biomedical text applications.
7. API includes routines for training ABNER on new corpora.

Requirements:
* Java

The license of this software is Freeware, you can free download and free use this calculator software.