GemBuilder® for Smalltalk / VW provides an interface between Smalltalk clients in Cincom’s VisualWorks Smalltalk and GemStone, and works with the Smalltalk execution engine to support application partitioning for improved client/server performance.

GemBuilder for Smalltalk also extends the development environment by providing specific tools for developing GemStone/S applications, including browsers, inspectors, debuggers, and system administration tools.


GemBuilder for Smalltalk / VW maintains compatibility with new releases of Cincom’s VisualWorks Smalltalk product, as well as with new releases of the GemStone/S object servers. GemBuilder for Smalltalk/VW is supported on Windows, Linux, and Solaris platforms.

Licensing & Terms of Use

You must have a license for GemBuilder for Smalltalk for VisualWorks, as well as a server license and keyfile file that allows use of GBS, in order to load or use GBS.

Release History

For a list of past versions of GemBuilder for Smalltalk/VW, and the release notes describing changes in each version, see the Release History and Table of Release Notes.

Version Compatibility

To lookup the GemStone Server product and versions, client Smalltalk versions, and OS platforms supported by GemBuilder for Smalltalk/Vw, see the following:

GBS 8.3 Compatibility
GBS 8.2 Compatibility
GBS 8.1 Compatibility
GBS 7.6.1 Compatibility
GBS 7.6 Compatibility
GBS 7.5 Compatibility
GBS 7.4.1 Compatibility

Current version – 8.3

Released October 2017
Client Smalltalk: VisualWorks 8.2.1, 8.1.1, and 7.10.1.
GemStone Server: GemStone/S 64 Bit v3.x and 32-bit GemStone/S

GBS v8.3 is a significant release, adding support for GS64 3.4 and VisualWorks 8.3.1 and fixing many bugs in the tools.

For documentation, download, and other information on older versions, see All GBS/VW versions.


Release Notes v8.3   pdf   html
Installation Guide v8.3   pdf   html
User’s Guide v7.6   pdf   html


You must have an applicable license in order to download GBS, and your server keyfile must include explicit permissions.

GBS 8.3 for VisualWorks Smalltalk

This download includes the documentation.

Bug Notes

Bugnotes describe bugs and unexpected behavior in versions of GemStone software. Refer to these bugnotes regularly to be sure you are aware of issues you may encounter.

Bugnotes for 8.3

For bugnotes for other versions and other products, see the complete list on the Bugnotes Resource Page.