Descriptions, Q&A, downloads, mail lists, programming information. Not up-to-date, but has useful information, some of historical interest. http://www.deltasoft.com/opendos.htm
Makes DR-DOS, compact, Y2K safe, perfect for embedded or thin-client systems; source code available; development kits, older and localized versions; Breadbox Ensemble; NetWare. http://www.drdos.com/
Goal: continue development, enhance abilities of, add support for new standards to, extend life of this DOS under open source license. Descriptions, downloads of latest versions: source code, binaries, patches. http://www.drdosprojects.de/
Unofficial page with FAQ, news/information, mirrors, bug reports, support, history, binary file for private use, links to DOS programs, documentation library, German links. http://stud3.tuwien.ac.at/~e0225895/drdos/