Versant Argos
A multi-platform smalltalk IDE and object oriented development system released by object database vendor Versant in early 1995, sold as an integrated system that included a licensed version of the VisualWorks Smalltalk system from but was also sold as an add-on for the latter system in some instances, or at the least available at a discount for those that already owned the VisualWorks package.
The system was seen and sold as much as a RAD system for the Versant ODBMS system that gave you a write once deploy anywhere capability and offered a graphical object modelling capability with the system automatically converting models to Smalltalk code, with some interesting iterative development features as well. While the system could be used without the Versant ODBMS database as it did support connection to SQL databases as an alternative, using the ODBMS allowed the system to use it as a persistent object store and gave you capabilities such as a versioning system and other configuration management capabilities that were lost with the use of a third party RDBMS.
In addition to OS/2 the product was available for Microsoft Windows and the most popular UNIX systems of the day.
Licence
Discontinued commercial software, developer licences started at USD 3000 per seat.