Alternatives

Modelist alternatives for local STL libraries

By Petros, who builds Meshory · Updated Sep 18, 2026 · 7 min read

Modelist is the closest thing to a direct competitor we have, and this page is written by the people who make one of the alternatives, so read it with that in mind. It is a local-first desktop app for macOS, Windows and Linux that indexes your existing folders, renders thumbnails automatically, reads inside archives without extracting them, and charges once rather than monthly. Most people searching for an alternative are not unhappy with it. They have hit one specific thing. This page names the things, lists what else is on the shelf with prices from each vendor's own site, and is explicit about when the answer is to stay where you are.

First, credit. Modelist is built by a solo developer and does several things well: nested and smart collections, searchable freeform notes, a phone-to-desktop share inbox, a printers-and-materials library you can filter your models against, and a duplicate finder with three matching methods. Its archive support is the widest of any desktop app in this category, covering ZIP, RAR, 7Z, TAR, TAR.GZ and TAR.BZ2. The viewer reaches STEP. It is a serious tool, not a placeholder.

The four reasons people actually look

Each of these is documented by Modelist itself rather than inferred from a review.

1. 1The free tier is a trial. Fifty files is enough to decide whether you like the idea and nowhere near enough to hold a library. Anyone who arrived through the free tier hits this wall in an afternoon, and it is the most common reason the search happens at all.
2. 2Moving files between drives loses your work. Modelist's own documentation notes that a cross-drive move reads as a delete plus a re-add, so tags, notes and metadata do not survive it. Same-drive moves are safe. If you are consolidating onto a new drive or a NAS, this is the one that hurts.
3. 3Folders are rescanned at launch, not watched. This is a deliberate design choice rather than a bug, and it is fine if you download in batches. It is less fine if files arrive throughout the day and you expect the library to notice.
4. 4Companion files are not covered. Custom thumbnail images are supported; a photo gallery and document viewing are not documented. If your bundles arrive with creator renders and PDF instructions you want to read next to the model, that content stays invisible.

What else is on the shelf

Prices and platforms below come from each vendor's own site. The order is deliberate: cost first, because the free option is genuinely good and most people should try it before spending anything.

Two of those carry a catch worth stating before you download anything. Printventory's viewer covers STL and 3MF but not OBJ or STEP, so it is a step down from Modelist on formats. Orynt3D captures thumbnails by hand from a preview window, one model at a time, and releases roughly one to three times a year; its last release was v0.15.3 in September 2025. For a library of any size, manual thumbnail capture is the thing that quietly ends the project.

If you left over the drive-move problem

This is the reason with the narrowest answer, because it is about how a tool identifies a file. Modelist ties metadata to the file's location, which is why crossing a drive boundary breaks the link. Meshory tracks models by content fingerprint instead, so tags, notes and thumbnails follow a file through renames and reorganizing, and sources are watched in place rather than rescanned at launch. We have not verified how Printventory, MeshVault or Manyfold behave on a cross-drive move, and none of them documents it clearly, so if consolidating drives is what pushed you, tag a handful of files and move them between drives before trusting any of these with a real library.

If you left over duplicates at scale

Modelist's three methods are exact, name-plus-size, and perceptual matching. Exact matching is reliable, and name-plus-size is a reasonable heuristic. What none of the three does is compare the mesh itself, so a model re-exported by its creator or converted between formats shares no bytes, no name and no size, and slips through. Geometry matching closes that specific gap, and how hash and geometry detection differ explains which tier catches what, including where geometry matching stops: a slicer project usually re-centers the model, so it lands in a review queue rather than being called an exact match.

When Modelist is still the right answer

Several of these are places Modelist beats the app we make, and they are worth reading before you spend anything.

• You want to try before paying. Fifty files free is more generous than a time-limited trial, and nothing in this category matches it. Meshory has no free tier at all.
• You want to filter by what you can print today. The printers-and-materials library, with printer, material and weight read out of sliced 3MFs, has no equivalent here. Meshory has a filament library, and spool and printer tracking are roadmap items rather than shipped features.
• Your archives include TAR.BZ2. Modelist indexes it and Meshory does not.
• You send models from your phone. The share inbox is genuinely neat and nothing else on this list does it.
• Price. At €20 for v1.x, Modelist is cheaper than every paid alternative here except MeshVault.

If the thing that sent you looking is on that list, the honest answer is that switching will cost you something. The head-to-head comparison sets the two out feature by feature, and the full organizer roundup covers twelve tools rather than five if none of these fit.