Cirrus – takes control of iCloud, investigates and diagnoses its problems

Updated! Cirrus has four main functions. It can download and evict (from local storage) items stored in iCloud so that you can manage them properly. It provides full details about files and folders held in iCloud. It performs a test file upload, which can help unstick pending uploads. It also provides specialised access to iCloud-related log activity. New iCloud Browser gets info straight from iCloud, works with Desktop & Documents Folders option, saves detailed reports, and runs on El Capitan too (except log feature). New version improves log excerpts in Sonoma.
Cirrus 1.9 (Intel only for El Capitan, Sierra, High Sierra, Mojave, Catalina and Big Sur)
Cirrus 1.10 (Universal App for El Capitan, Sierra, High Sierra, Mojave, Catalina and Big Sur)
Cirrus 1.14 (Universal App for High Sierra, Mojave, Catalina, Big Sur, Monterey, Ventura and Sonoma)

Bailiff – menubar control over whether iCloud documents are kept in local storage

Bailiff is a simple menubar app which lets you evict iCloud files and folders from local storage, or download them when you want. Saves your Mac’s startup disk from getting cluttered with files you don’t want or use.
Bailiff 1.4 (Intel only for El Capitan, Sierra, High Sierra, Mojave and Catalina)
Bailiff 1.5 (Universal App for El Capitan, Sierra, High Sierra, Mojave, Catalina, Big Sur and Monterey)

Known issues:

Cirrus must be run as an admin user if you wish to use its log browser window. This is because obtaining log extracts uses the log show command, which only works reliably when run as a admin user.

Cirrus 1.11 and later no longer support El Capitan. If you want to use Cirrus on El Capitan, stick with version 1.10.

Articles:

Mints and Cirrus updated for Sonoma’s iCloud Drive logs
Desktop & Documents Folders in iCloud Drive
iCloud Drive in Sonoma: Optimise Mac Storage or not?
iCloud Drive in Sonoma: Clones, sparse files, versions and more
iCloud Drive in Sonoma: Mechanisms, throttling and system limits
iCloud Drive in Sonoma: Copying a file
iCloud does throttle data syncing after all
Do you use iCloud Drive? Are you intending to upgrade to Sonoma?
How to fix problems with iCloud and iCloud Drive
How does iCloud work? Plus a new version of Cirrus
Cirrus 1.12 and Taccy 1.14 fix time issues and improve log performance
Bugs and problems in the log: updates for 6 apps
Bailiff version 1.5 is a Universal App
Cirrus version 1.10 has an improved interface and is a Universal App
How to reveal ‘private’ messages in the log
Testing iCloud using Cirrus
Cirrus version 1.9 has several important improvements
Cirrus 1.8 restores full function in Catalina betas
Cirrus 1.7 now copes with custom paths to iCloud Drive
Bailiff version 1.4 checks its own code integrity and is ready for Catalina