Smalltalk
Object oriented, dynamically typed language, was the main development language of IBM application and development software from the late 1980's into the late 90's when Java took over.
A list of OS/2 implementations of SmallTalk
- ChapMan - Commercial - Discontinued
- Enfin/2 - Commercial - Discontinued
- IBM VisualAge Smalltalk Enterprise 6.0 - Commercial - Discontinued
- Smalltalk/V PM - Commercial - Discontinued
- Squeak - Open Source - Discontinued
- Visual Smalltalk Enterprise - Commercial - Discontinued
Libraries and bindings
- Indelv XML Libary - Open source library under the Mozilla Public License - a VisualAge version compatible with OS/2 was supposedly available but the company actually never uploaded it to their site, neither the last 2.2 beta or the earlier 1.01, even though there were download links both of to them on their site for years.
A list of DOS implementations of SmallTalk
- Methods - Commercial - Discontinued
- Smalltalk/V DOS - Commercial - Discontinued