JabRef is yet another open source reference management software. This software can easily edit, search and view reference entries. JabRef can also directly search for articles in ACM, ArXiv, IEEEXplore, Google Scholar, DOAJ etc. Links to external sources such as URLs, DOIs ad PDFs can be opened with a single click. Another feature is that it can search for the full text of a reference, then download it and directly link it to the BibTeX entry. These entries can then be grouped by keywords or any other fields.
Download now: https://www.jabref.org/