Sapling

Sapling is a scalable source control system designed to simplify development workflows and provide user-friendly interfaces while being capable of handling very large monorepos. It offers a similar interface to Git and can interact with Git repositories and GitHub pull requests. However, it introduces a stack concept instead of using local branches, which helps in organizing and iterating on work more efficiently. Sapling includes first-class undo commands and a built-in web UI for reviewing stacks on top of GitHub PRs.

One of the advantages of Sapling is that it does not require all team members to migrate at once, allowing for a smoother transition. It is particularly beneficial for large-scale projects due to its client/server model, though this model means it is not "distributed" like Git. Despite this, it integrates well with existing Git workflows and tools, making it a flexible option for developers looking to enhance their source control processes.