KBibTeX is a free, open-source bibliography management program for Windows, Mac, and Linux. It enables users to easily create, edit, and manage bibliographies or citations. It supports a wide variety of formats, including BibLaTeX, BibTeX, BiblatexML, EndNote, RIS, and MODS. KBibTeX also provides automated online search capabilities, allowing users to quickly and easily find, import, and manage references from online databases such as PubMed, Google Scholar, and zbMATH. It also supports LaTeX and BibTeX export, making it easy to integrate bibliographies into LaTeX documents. Finally, KBibTeX provides a powerful plugin system, allowing users to add custom features and extend the program's capabilities.
Discontinued development and support of Docear was stopped in August 2017. The latest version, 1.2, released in December 2015, can still be downloaded from the official website. http://www.docear.org/2017/02/05/docears-online-services-are-down-recommendation-user-registration-backup/