Smalltalk has had code versioning and sharing for a long time now (Envy, Monticello, etc). But in the past few years Git integration has really taken off. Pharo

Smalltalk has had code versioning and sharing for a long time now (Envy, Monticello, etc). But in the past few years Git integration has really taken off. Pharo uses Iceberg to interact with git and the main image is now developed exclusively through it.