ORVYL is a time-sharing monitor developed by Stanford University for IBM System/360 and System/370 computers, first running in 1967 and 1968. It was one of the first time-sharing systems made available for IBM mainframes, letting multiple interactive users share a single machine rather than submitting jobs in batches. Wylbur is a companion text editor and word processor written to work either together with ORVYL or on its own. Both were written in 360/370 assembly language, ran on IBM S/360 and S/370 systems and their successors, and were eventually discontinued; the earliest versions were distributed as open source before later editions moved to proprietary licensing terms.
Facts
Classification
LicenseProprietary (Closed Source) 1 SignificanceOne of the first time-sharing systems made available for IBM computers. 1 Connections
Licensed Under
Entity-backed identity for the license enum value this item already carries, resolved to a software license concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The license fact itself stays on the item unchanged.
Entity-backed identity for the license enum value this item already carries, resolved to a software license concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The license fact itself stays on the item unchanged.
Sources
1. ORVYL and WYLBUR (Wikipedia)
Infobox, Initial release
1967, 1968
Infobox, Working state
Discontinued
Infobox, License
Originally public domain; the later proprietary versions had distinct licenses
Infobox, License [license]
the later proprietary versions had distinct licenses
Lead paragraph
ORVYL was one of the first time-sharing systems to be made available for IBM computers.
- In Group: Research and Academic Operating Systems, developed by Stanford University time-sharing monitor for IBM System/360 and System/370
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