Folder mirroring · for macOS
Two folders, identical. And nothing ever disappears.
Mirror keeps a folder and its copy in step, on whichever disks you like. It differs from every other sync tool on one point, and it is the point that matters: it never deletes anything on the copy. What leaves the original is set aside, dated, and kept.
Why another sync tool
A sync tool does its job faithfully: you delete in A, it deletes in B. Including the time the deletion was a mistake, and you find out three months later.
Backup software piles everything into a format only that same software can open. The day you need one file, you need the program that made it — and the version that made it.
rsync does exactly the right thing, very well, on the command line. Which is why nobody points it at twenty years of work without a knot in the stomach.
A copy is only worth having if you can trust it on the days you got something wrong. That is the entire design brief.
What it does
- Nothing is ever destroyed on the copy. What disappears from the original moves into a dated “Removed on…” folder and stays there.
- One way or both ways, on demand or continuously
- Plain folders, plain files — open them in the Finder without Mirror installed
- Compares before copying: only what changed goes across
- Live throughput, file by file
- Any disks: internal, external, whatever the Finder can see
- A duplicated archive keeps its identifier, so the two disks are known as two copies of one archive — not two unrelated collections
The rule, in full
Nothing is ever erased in B. In full sync, whatever is no longer in A drops into “Removed on…”, dated. It stays there. Mirror will not clean it up later, will not compress it, will not ask. Emptying that folder is your decision, taken on a day you have thought about it.
This is not a backup — it makes no snapshots and keeps no history of versions. It is a copy you can read with your own eyes. The two things are complementary: keep Time Machine, and keep a copy you understand.
Who it is for
Anyone with more files than one disk can hold and no wish to learn a command line. Photographers coming back from a shoot. Editors moving rushes between a workstation and a drive. Musicians, researchers, archivists — people whose material has no second original.
Mirror was written alongside Capturedigitises, which digitises MiniDV and HDV tapes. If that is why you are here, Mirror steps aside while a tape is being digitised and picks up afterwards — and the suite of three costs less than two apps bought separately.
Get Mirror
- Capture digitises as many tapes as you like, ten minutes of each. Enough to watch it read the date off the tape, split the shots and file them.
- Proxy converts as many files as you like, two minutes of each. Queue four hundred and watch it work through the lot.
- Mirror is not limited at all. A mirror is never finished — one week simply shows you whether it holds.
- The catalogue reads your whole archive and shows it to you. It just does not keep it: close the application and it forgets.
This is not a crippled edition — it is the whole thing, minus the right to walk away with the result. Files made during the trial carry _ESSAI in their name so they never get mistaken for masters later, and a capture already running is never cut off mid-tape.
On its own. A perpetual licence, one person, two Macs.
Nothing is on sale yet: leave your address and you will hear on the day.
Capture, Mirror and Proxy together. Capture is only sold this way.
A perpetual licence. What you buy is yours for good.
- Every update is free for one year — not one at a time, all of them
- After that year the application keeps working exactly as it did. Nothing expires.
- Once bought: activated once, then offline for good — never contacts a server again.
FAQ
Can I try it before paying?
Does the application connect to the internet?
Is this a backup?
What if I delete something by mistake?
Do I need the other two applications?
The app won’t open — macOS says it can’t be verified
Do my files stay with me?
The other two