Relevant Logic

4th Dimension is a combined database server and GUI application builder for Macintosh and Windows. For a certain type of program, there is still nothing like it.

We have been writing 4th Dimension applications for years, and even worked in technical support for the product for eighteen months.

For most projects, we would now choose other tools. Call us if you want a 4th Dimension project maintained or ported. REALbasic combined with a SQL server is now a compelling alternative.