Bridge is free, and it already leaves your folders alone.

Every other comparison on this site turns on whether the app takes your files into a library. This one does not, because Adobe Bridge makes the same choice Coii Ref does: it browses the folders that exist, in place, and does not adopt anything. If "does it move my files" is your question, both answers are no and you can stop worrying about it for the rest of this page.

That removes the easy argument, so here is the hard one. Bridge is free — Adobe's own product page offers it as a free download — and it reads a far wider set of formats than we do, with thumbnails and rich previews across the Adobe applications. It organises with collections, finds things with filters and metadata search, and lets you add keywords, labels and ratings and edit metadata directly. If your work already lives in Creative Cloud, Bridge is sitting in the installer you already have, costs nothing, and knows what a layered document is.

Coii Ref costs $19 once for three Macs and is images and video only. What it offers against a free tool with a wider brief is narrower and specific: one line of search instead of a panel, infinite canvases saved as plain files in your own folders, everything the app writes kept inside the folder you pointed it at, and a total of two kinds of outbound network request. Whether that is worth $19 over free depends entirely on whether you want to compose with references or only to file them.

The table

Where Bridge wins

It is free, and that is not a technicality. There is no trial and no licence to buy. For a great many people that alone settles it, and a comparison page that buried the fact under three paragraphs of our own advantages would deserve to be distrusted.

Your ratings travel with the file. This is Bridge's best structural argument and it is genuinely better than ours. Adobe's documentation is explicit that XMP metadata is in most cases stored in the file itself, and in a sidecar file where the format cannot hold it. So a four-star rating and a set of keywords applied in Bridge are readable by anything else that reads XMP — a different Adobe application, a different vendor's cataloguer, a script. Coii Ref's ratings, tags and notes live in its own workspace database. The workspace is a folder you can copy and back up, but a rating in it is not something another program will pick up by opening the JPEG.

It knows what your files are. Layered documents, layouts, camera raw, PDFs, the whole spread of things a creative folder actually contains. Bridge previews them and hands them to the application that owns them. Coii Ref is images and video and will not show you a page of a document or the inside of a layered file. If the folder you want to browse is a working project rather than a wall of pictures, that is Bridge's job.

It is one of the oldest tools in the room. Longevity is a real feature in a category where people have watched more than one well-liked application stop shipping. Bridge has been maintained across an unusually long stretch of Mac history, and a reader weighing a first-year product from a small company against that is weighing something genuine, not a marketing point.

Collections and metadata search. Bridge's collections gather files from anywhere without moving them, and its filters and metadata search cut a folder down by the fields already written into your files. If your camera and your existing workflow have been writing good metadata for years, Bridge starts from a richer position than an app that indexes a folder cold.

Two platforms and a long life. Bridge has been part of the Adobe desktop for a very long time, and Adobe publishes its requirements for macOS and Windows. Coii Ref is macOS 11 or later and nothing else.

Where Coii Ref wins

The board, which Bridge does not attempt

Bridge is a browser and an organiser. What it does not do is let you take nineteen images out of four different folders and arrange them, at whatever size and in whatever grouping the idea needs, on a surface you keep.

The file is Cold interiors.coii-canvas — pretty-printed JSON, in whichever of your folders you saved it to. It diffs in version control, it syncs through whatever you already sync with, and you could open it in a text editor in ten years or write a script against it without asking us for a format. If you have ever wondered what happens to the work when an application stops, this is the only kind of answer you can verify yourself rather than take on trust.

One line instead of a panel

Bridge's filters are good and they are a panel: you narrow by clicking through fields. Coii Ref puts the same job on one line, and that line is also what a saved view stores.

The keys are type ext tag rating is has no in width height added modified. AND across keys, OR inside a comma list, no parentheses — grouping is the thing that makes a query impossible to autocomplete or draw as removable chips. A word the parser does not know becomes free text rather than an error, so the grid keeps returning rows while you are still typing. And because a saved view stores the text and re-parses it on open, renaming a tag does not leave a stale list behind; the view simply follows.

Everything the app writes is inside your folder

Bridge keeps a central cache — a database of thumbnails, previews and metadata — with an option to export the cache to the folders it came from. Coii Ref has no central anything. Point it at a directory and the index, the thumbnails and the canvas-resolution proxies are written inside that directory.

The consequences are the ones that matter years later. Whatever backs up the folder has backed up the library. Copying the folder to another drive copies the workspace with it. Opening it on a second Mac needs no export and no rebuild. Six drives is six self-contained workspaces rather than one application deciding what it can currently see. And the folder watcher keeps the index honest as you work: filesystem events become the smallest re-scan that makes it true again, so a rename in Finder stays a rename rather than becoming a new file with a lost rating, and a drive that has been unplugged for a month is reconciled instead of rediscovered. That keeps running after the trial ends, on purpose.

Video sits beside the stills

Clips are picked up on the same index pass, carry the same tags, ratings and notes, go onto a canvas next to the photographs, and are reachable from the same query line — type:video ext:mov is not a mode you switch into. Proxies are written at canvas resolution beside your files so a board of footage scrolls like a board of photographs. Bridge previews video too; the difference is not the category but whether a clip can end up on the same wall as a still.

Two connections, no account

Coii Ref makes two kinds of outbound request in its life: the licence check when you press Activate, and one at launch read only for its Date header so a wound-back clock cannot mint free trial days. No analytics, no crash reporting, no update check. The thirty-day trial needs no card and no sign-up at all — there is no account to create, which is a different proposition from free software you sign into.

The scale a reference library reaches

Neither app is worth thinking about for four hundred pictures. The case that shaped Coii Ref is forty thousand across six drives, one of them not plugged in today, in folders somebody else keeps reorganising — which is where a collection lands after a few years of actually collecting.

Indexing that many files is a first pass you start and walk away from. What keeps the library true afterwards is the watcher rather than a re-import, and the reason that matters is trust: a library that goes stale every time you tidy up in Finder is one you stop searching, and one you stop searching is one you stop adding to. Six drives being six independent workspaces is the other half of the same idea — each is backed up by whatever already backs up that drive, and a board that draws on two of them is still one text file you can copy anywhere.

The question this comparison actually turns on

Both apps look at folders. The difference is what they think the folder is for.

Bridge treats a folder as a place work is stored on the way to somewhere else — into Photoshop, into a layout, out to a client. Its metadata model reflects that: write the rating into the file, because the file is going to travel. That is the right design for production assets, and it is why Bridge has outlasted most of its contemporaries.

Coii Ref treats a folder as a collection you keep, which is a different animal. A reference library is not on its way anywhere. Its value is entirely in being searchable years later and in what you can assemble out of it this afternoon. So the index is disposable — regenerate it any time — and the artifacts worth protecting are the boards, which is why those are the plain files rather than the database.

If your pictures are inputs to a job, Bridge. If your pictures are the job's raw material and the arrangement of them is the thinking, this is what the $19 buys.

What the free price actually costs you, and what it does not

It is worth being careful here, because "free versus $19" is the sort of framing that invites a competitor to be unfair, and there is no need to be.

Bridge being free is not a trap and there is no upsell inside it that this page knows of. It is free because it exists to make the rest of Adobe's desktop more usable, which is a perfectly stable reason for a tool to be free and a better one than most. What it does mean is that Bridge's shape is decided by that job: it is a browser and a hand-off point between applications, and features that would only serve someone who never opens Photoshop are not the ones it is going to grow.

Coii Ref costs money for the opposite reason. There is nothing else it feeds. The only thing a person buying it can be buying is the library and the boards, so those are the only things it can spend its effort on. That is an argument for a narrow tool, not a superior one, and if the narrow thing is not what you need then $19 is $19 more than Bridge.

The place the price genuinely buys something is the account. Bridge is installed through Adobe, so getting it involves an Adobe account and the machinery that comes with one. Coii Ref has no account at any point: the trial is thirty days with no card and no sign-up, and the purchase produces a licence key rather than an identity. For some readers that is worth nothing. For anyone who has spent a morning on somebody's sign-in flow, or who works somewhere that has opinions about which company's identity system holds a seat, it is the difference.

What neither of them does

Neither is a collaboration tool: no shared workspace, no comment thread on an image, no link that opens a live board for a client. Neither has a mobile app. Neither is an image editor in the sense that matters — Bridge hands a file to the application that edits it, and Coii Ref does not edit at all. And neither is a backup: both write their own artifacts around your files and both are happy pointed at a drive with no second copy anywhere, which stays your problem to solve with the tool you already use for it.

What switching costs

Almost nothing, in the useful direction, because neither app owns your files.

There is no Bridge importer — Coii Ref reads a refern library and nothing else — so ratings and keywords you have written in Bridge do not arrive as Coii Ref ratings and tags. What you do instead is point Coii Ref at the same folders Bridge has been browsing and let the first index run. Both apps can then look at the same directory tree at the same time, indefinitely, because neither of them moves anything. Running both for a fortnight is the honest way to answer this page, and it costs a second set of thumbnails.

The one thing to be deliberate about is where your existing organisation lives. If years of ratings are written into your files as XMP, that work stays in the files whatever you do next, which is a good position to be in and an argument for keeping Bridge installed regardless.

Who should use which

Use Bridge if free matters, which is a completely sufficient reason; if your folders hold layered documents, layouts, camera raw or PDFs; if you want ratings and keywords written into the files themselves so they travel; if you are on Windows as well as a Mac; or if you already open it every day as part of a Creative Cloud workflow.

Buy Coii Ref if you are on a Mac, your references are images and video, and the part you actually want is the wall rather than the browser; if you would rather type one line than click through a filter panel; if a board you can read as a text file in ten years is worth something to you; and if a library where every artifact sits inside the folder you nominated is how you would like to be able to back this up.

Read on: Eagle for the opposite philosophy, where the app owns the files; refern for the comparison where we concede the most ground; PureRef if a floating board is the whole of what you need; Apple Photos if your references and your own photographs are the same pile; and Finder tags for the free option already on your Mac. Or take the thirty days — every feature, no card, no account.