Revisionist – opens up the full power of the macOS versioning system

Revisionist makes deep copies of documents with all their versions, and carries versions across iCloud Drive and other barriers. It also identifies and lists files with multiple versions, lists versions with details for individual files, previews them using Quick Look, and removes/deletes selected versions from the macOS database. New version fixes a bug in moving through the list of versions using the arrow keys.
Revisionist 1.7 (Intel-only for El Capitan, Sierra, High Sierra, Mojave and Catalina)
Revisionist 1.8 (Universal App for El Capitan, Sierra, High Sierra, Mojave, Catalina, Big Sur, Monterey and Ventura)

DeepTools – three quick and simple tools to preserve versions associated with your documents when copying or moving them

DeepCopy preserves versions when copying/moving within a local volume, or between volumes. DeepArchive and DeepUnarchive ensure complete mobility, keeping versions intact for other Macs on iCloud, when copying to memory sticks, networked storage (NAS), even sending documents by email, and with other operating systems including Linux/Unix and Windows. Now with interface improvements and compatible with Catalina.
DeepTools 1.3 (Intel-only for El Capitan, Sierra, High Sierra, Mojave and Catalina)
DeepTools 1.4 (Universal App for El Capitan, Sierra, High Sierra, Mojave, Catalina, Big Sur, Monterey and Ventura)

Known Issues:

None at present.

How to recover old versions of Xcode source
Revisionist version 1.8 is now a Universal App
DeepTools version 1.4 are now Universal Apps
How to keep, or lose, a document’s previous versions
Time Machine 13: Backups and versions
Revisionist 1.7 now changes selection with the arrow keys
Revisionist 1.6 is now fully compatible with Catalina betas
Revisionist version 1.5 changes text size and is ready for Catalina
Versions in iCloud are still a mess, made worse by Handoff
Editing iCloud documents is far from seamless
Making macOS versions more usable
DeepTools 1 released: preserve document versions wherever they go
Workthrough: Using the macOS version system to recover lost content
Document Versioning
Busting myths about macOS versions and versioning
The Current Version: fixing macOS versioning
Trusting management
Tools for working with document versions/revisions
Documents and versioning