You can download Expresso 23.015.11 from our software library for free. The program lies within Development Tools, more precisely IDE. The actual developer of the free program is Ultrapico.
From the developer:
Expresso helps you to build complex regular expressions by selecting components from a palette.
You may want to check out more software, such as Code Composer Studio, Programmer's Notepad or SharpDevelop, which might be related to Expresso.