ACL Natural Language Software Registry Thierry Declerck (registry@dfki.de) The fourth edition of the ACL Natural Language Registry (NLSR) was released last year (see http://registry.dfki.de/), and this was reported at the ACL2000 executive meeting. Since then the NLSR team has been looking for extending the domain of application of the NLSR and for closer cooperation and interlinking with organizations and initiatives concerned with the listing and organization of NLP/CL resources. In this context there have been among other discussions with ELRA, LDC, Elsnet, ISCA, NIST and the University of Tokyo. The NLSR has also been present at workshops organized by the EU project ISLE (International Standard for Language Engineering): one concerned with tools and resources for natural interaction and multimodality (NIMM), and one concerned with metadata description (IMDI: Isle Metadata Initiative). The NLSR has been invited by the Open Language Archives Community (OLAC) initiative to participate as a data provider. For this, the NLSR made its data comform to an OAI data provider. Furthermore, an XML output is currently being developed, in order to improve the communication between NLP tools and language data repositories and catalogues. The NLSR team will be engaged in more details into the discussion on suitable metadata for language resources. The NLSR is participating as a data provider in the recently launched German Project "COLLATE" (Computational Linguistics and Language Technology), hosted in Saarbruecken at both DFKI and the University of the Saarland, and will specially contribute to the Virtual Information Center. Thierry Declerck is co-organiser (with Mike Rosner and Steven Krauwer) of the ACL/EACL workshop on "Sharing Tools and Resources for Research and Education", to be held in Toulouse the 7th of July 2001.