We describe in this paper an archive of software which has been establ
ished and made available to users of the Internet. The archive was est
ablished initially as a collection of public domain software,, made av
ailable to users at no cost. Use of the archive has grown rapidly: it
now contains over 600 items, and withdrawals take place to some 50 cou
ntries world-wide at a rate of about 40,000 items each month. We descr
ibe here the organisation of the archive and summarise its contents. A
particular aspect of this has been our aim to define qualitative crit
eria for the inclusion of software in this collection, and we discuss
our approach to this and other issues.