Catalog of Free Compilers and Interpreters - This list catalogues freely available software for language tools, which includes the following: compilers, compiler generators, interpreters, translators, important libraries, assemblers, etc. -- things whose user interface is a language. Natural language processing tools may also be included. This list is primarily aimed at developers rather than researchers.
National Resource for Global Standards (NSSN) - NSSN BASIC is a free online information service providing access to bibliographic information for more than 225,000 approved standards. Search the online catalog for title words or document numbers to find out if the standard you need exists, and if so, where to find it.