The R1000 was a workstation released in 1985 by Rational Software for the design, documentation, implementation, and maintenance of large software systems written using the Ada programming language. The R1000 featured an extensive tool set, including:
Optimizing code generators and cross-debuggers provided support for several popular application architectures.
As a successor to the R1000, Rational produced a new IDE called Rational Apex. Rational Apex took many of the features that the R1000 introduced and extended (ported) them onto commonly available workstations from Sun Microsystems and IBM.
Several R1000 units exist in museums and private collections but, because of the classified nature of much Ada programming, these units had been wiped; efforts have been made to boot one of these systems, with little or no luck as of 2013.