Best Free PureRef Alternatives in 2026

The best free PureRef alternatives in 2026 are BeeRef (open source, all platforms), Kuadro (freeware, Windows only), and PureRef's own pay-what-you-want personal tier. All three cover the core use case: floating reference images on screen while you work in another app. All three share the same ceiling: no search, no tags, no library. This list explains each honestly so you can pick the right tool for where you are now.

By refern. Last updated: June 2026.

How these tools were selected

Every tool on this list is free for at least personal use (no credit card, no trial clock) and covers the reference-board workflow. Tools are ordered starting with the most capable free option. Honest limitations are included for each. One paid option (refern) is listed at the end with its honest cons, because the question artists actually face is not "which free tool" but "which tool for my situation."

At a glance

1. BeeRef: best free open-source PureRef alternative

BeeRef is a free, open-source (GPL-3.0) reference board that runs on Windows, macOS, and Linux. It covers the core PureRef workflow at zero cost and is the strongest free choice for most artists in 2026.

Created by Rebecca Breu (a Krita contributor) and first released in July 2021, BeeRef lets you drag images onto an infinite canvas, pin the window on top of your painting app, and use the color sampler to grab hex values from your references. The latest release is v0.3.3 (May 2024). [github.com/rbreu/beeref]

Strengths:

• Completely free with no donation prompt, GPL-3.0 source code available on GitHub
• Cross-platform: Windows, macOS (marked experimental), and Linux as a Flatpak, AppImage, or Arch AUR package
• Lightweight: the Flatpak package is 19 MiB and starts fast [flathub.org/en/apps/org.beeref.BeeRef]
• Color sampler tool copies hex values to clipboard with one click
• Configurable keyboard shortcuts and mouse controls, editable within the app UI [github.com/rbreu/beeref/releases]
• Scene export to PNG, JPEG, and SVG

Honest limitations:

• No search, no tags, no library. Finding a specific image means scrolling the canvas manually. [alternativeto.net/software/beeref/about/]
• No persistent collection across boards. Each .bee file is one self-contained scene; there is no way to browse or search across multiple boards.
• macOS support is experimental. The developer has stated an inability to personally test macOS builds, so rough edges exist. [krita-artists.org BeeRef thread]
• No animated GIF or video support. This has been an open feature request since February 2022 with no implementation. [github.com/rbreu/beeref/issues/52]
• No freehand drawing or markup tools (requested, not yet shipped as of v0.3.3). [github.com/rbreu/beeref/discussions]
• Images are embedded into the .bee file rather than stored as paths. Boards with many high-resolution images become large single files. [github.com/rbreu/beeref/issues/40]
• No confirmation dialog when pressing Ctrl+N, which can silently discard unsaved work. [alternativeto.net/software/beeref/about/]
• Development pace is slow. One release per year or less. A GitHub Discussions thread titled "Is Beeref abandoned/dying?" reflects real community concern. [github.com/rbreu/beeref/discussions]

Price: Free. GPL-3.0 license. [beeref.org]

Use it if: you want a free, open-source canvas overlay on Linux or Windows and only need the floating-reference workflow. Particularly well-suited to Krita users.

Skip it if: your collection has grown to hundreds of images, you need GIF or video support, or you are on macOS and need a stable production environment.

2. Kuadro: free floating windows for Windows users

Kuadro is a free Windows reference viewer where each image opens as its own borderless always-on-top OS window rather than a shared canvas. It is portable, lightweight, and has mouse click-through for painting under your references. It is Windows only and has had minimal updates since around 2018 to 2022.

Made by Luiz Kruel (a technical artist at Rockstar Games) and first released in January 2015, Kuadro is well-known on Polycount and in 3D art communities. [cgchannel.com 2015 Kuadro launch coverage]

Strengths:

• Completely free, commercial use permitted, no payment prompt or nag screen [kruelgames.com/tools/kuadro/]
• Mouse click-through (paint-through) mode: mouse events pass through to the app underneath, so you can paint or model with a reference floating directly over your viewport [render.otoy.com Kuadro forum thread]
• Adjustable window opacity per image
• Portable .exe: runs from a USB drive, no installation required
• Multi-monitor native: each image is its own OS window, so references span monitors without any configuration
• Save and reload layout presets (.ref files that use relative paths and survive being moved between drives) [kruelgames.com changelog notes]
• Very low resource usage

Honest limitations:

• Windows only in practice. The macOS version (v0.9.5) is officially described as unsupported by the developer. [luizkruel.gumroad.com/l/kuadro_osx] No Linux version exists. [saashub.com/compare-pureref-vs-kuadro]
• Development is effectively dormant. The last publicly confirmed release was v0.9.5 in August 2018 with one unconfirmed Windows fix build afterward. Functionality is stable but there is no active improvement.
• No canvas or unified moodboard. Each image is a separate OS window. There is no composited board you can save as one file or export as an image.
• No search, no tags, no library. No way to find an image except by remembering its location.
• Lock mode is all-or-nothing. All images lock and unlock together; there is no per-window toggle. [animationandvideo.com 2020 Kuadro review]
• A documented bug causes images to progressively shrink when cycling through a folder with the arrow keys. [animationandvideo.com 2020 Kuadro review]
• No browser extension or one-click web capture.

Price: Free. No paid tier. [kruelgames.com/tools/kuadro/]

Use it if: you are on Windows, you only need a handful of floating reference windows per session (no moodboard), and you want the simplest possible zero-install experience.

Skip it if: you are on macOS or Linux, you need a unified canvas, your collection has grown past a few dozen images, or you want a tool that is being actively maintained. Given the dormant state, BeeRef and PureRef's personal tier are more reliable free options.

3. PureRef personal tier: the tool you already know, free for non-commercial use

PureRef's personal tier is pay-what-you-want, including $0, for non-commercial use. If you are a student or hobbyist, this is the most feature-rich free option and the one with the deepest industry community behind it.

Made by Idyllic Pixel AB (Viktor and Natascha, a two-person studio in Stockholm), PureRef has been in development since 2013. Version 2.0 (May 2024) added groups with background colors, a hierarchy window, GIF playback with frame scrubbing, and a command palette. Version 2.1 (January 2026) added shapes (rectangles, ellipses, lines), a background grid with snap, and batch image optimization. [pureref.com/blog/pureref2/, pureref.com/blog/pureref21/]

Strengths:

• Free for personal, non-commercial use at any amount including $0 (suggested $7 or $15) [pureref.com/download.php]
• Best-in-class always-on-top: v2.0 added the ability to pin PureRef above a specific application window, not just all windows [pureref.com/blog/pureref2/]
• Transparent-to-mouse (click-through): artists can eye-drop colors from references directly into their painting app without switching windows [pureref.com/handbook/features/]
• Groups with background colors, a hierarchy tree view, and drag-and-drop reordering
• Rich-text notes (bold, italic, checklists, hyperlinks), freehand drawing, shapes, GIF playback and frame extraction
• Batch image optimization: change resolution, format, and manage file locations (v2.1) [pureref.com/blog/pureref21/]
• 13 years of industry trust. PureRef is recommended at art schools and studios alongside Photoshop, ZBrush, and Blender. [conceptartempire.com, therookies.co]
• Cross-platform: Windows, macOS, Linux [pureref.com/download.php]

Honest limitations:

• Zero search or tagging. No way to find a specific image by name, keyword, or color within PureRef. This is the most-requested feature since at least 2022 and has not shipped. [pureref.com/forum/read.php?3,2698]
• No persistent library across boards. Each .pur file is self-contained; reusing an image from a past project means opening that file and finding it manually.
• RAM pressure at scale. PureRef loads all images uncompressed into memory. The developers acknowledge the limitation and recommend splitting large boards. [pureref.com/forum/read.php?2,1947]
• File corruption risk. If a save is interrupted by a power loss or full disk, the .pur file can become corrupted. Users have reported losing months of references this way. A .pur.old backup exists but is not prominently documented. [pureref.com/forum/read.php?5,1367]
• Commercial use requires a paid license. Solo freelancers need the Small Business license at $49 one-time (as of 2026) or the Business plan at $8 to $10 per seat per month (as of 2026). This was a meaningful change from v1, which allowed free commercial use, and generated frustration from solo artists. [pureref.com/forum/read.php?3,3618]
• No browser extension. Saving images from a website requires right-clicking, saving to disk, and dragging into PureRef.
• No cloud sync, no sharing, no mobile app.

Price (as of 2026): Personal (non-commercial): pay-what-you-want, $0 allowed. Small Business (commercial, up to 3 users): $49 one-time. Business (commercial, per seat): $10 per seat per month or $8 per seat per month billed annually. [pureref.com/download.php]

Use it if: you are a student or hobbyist, your work is personal or educational, and you want the most feature-complete free canvas. PureRef is genuinely the strongest tool at its core use case.

Skip it if: you use PureRef professionally (a paid commercial license is required), your library has grown beyond what you can navigate visually, or the lack of search and tags has become a daily frustration.

4. refern: the paid option that adds a searchable library (30-day free trial)

refern is not free. It costs $30 one-time after a 30-day free trial with no account required. It is on this list because it is honest to say what a paid tool offers at this price, and there is a specific point where the free tools stop being enough.

That point is when you can no longer find your own images.

refern is a desktop reference manager for artists that combines Eagle-style organization with a PureRef-style infinite canvas and an Obsidian-style relationship graph. It costs $30 one time, runs on Windows, macOS, and Linux, and does not copy your files.

What refern adds beyond the free tools:

• Full-text search (SQLite FTS5) across filenames, descriptions, notes, tags, source URLs, and creators. 14 inline search operators including tag:, color:, rating:>=3, is:duplicate, linked:, and sort:. Results appear in milliseconds, locally.
• Hierarchical tags, tag groups, linked tags, and tag macros with autocomplete. Tag images once and find them forever.
• Smart folders: saved search queries that auto-populate (for example, "all anatomy references" or "all images rated 4 stars or above").
• Color search by hex value, and visual similarity search using a local 512-byte descriptor. No internet connection required for either.
• Browser extension for Chrome, Firefox, and Safari: hover-save, right-click save, and batch save from any website, with tag-on-save and folder targeting.
• A relationship graph view: navigable graph of folders, images, canvases, groups, and the typed links between them.
• Eagle import that preserves folders, tags, ratings, sources, and notes. Users switching from Eagle keep their entire organizational history.
• Never copies your files. A workspace is a normal folder on disk. refern stores an index and thumbnails alongside your originals. Your files stay where they are.
• The canvas covers the PureRef overlay use case: pin any canvas window on top, adjust transparency, enable full mouse click-through.

Honest limitations:

• Not free. $30 one-time (launch pricing, going to $35 about two months after launch). The 30-day trial is full-featured but the app requires purchase to continue.
• No cloud sync or sharing yet. refern is single-user and local-first today. Cloud sync is planned for Phase 2.
• No web or mobile app yet. References are accessible only on your desktop. Mobile is planned for Phase 3.
• Younger than the free tools. refern launched in June 2026. PureRef has 13 years of community trust, tutorials, and a larger installed base.
• No AVIF support yet.

Price: $30 one-time (launch pricing, going to $35 about two months after launch). 30-day free trial, no account, no data locked on expiry. 1 license covers up to 3 devices, commercial use included. Download at refern.app.

Use it if: your collection has grown past one project, you need to find images by tag, color, or keyword, you want to stop running PureRef and an asset manager as two separate apps, or you want a browser extension for web capture.

Skip it if: you only need a session canvas for one project at a time and have no organization needs. PureRef's personal tier or BeeRef will serve you well at no cost.

Full comparison table

When free is enough

Free tools cover the core reference-board use case well. You do not need to pay if all of these are true for you:

• You use references for one project at a time and clear the board when the project is done.
• Your work is personal or educational (commercial use with PureRef requires a paid license).
• You can find images by scanning the canvas visually.
• You do not need to save images from the web in one click.
• You do not need to find images by tag, color, or keyword across past projects.

In that situation, BeeRef is the strongest free pick for most artists: open source, cross-platform, and stable for the core workflow. PureRef personal is the right choice if you are already on PureRef and the non-commercial tier fits your situation. Kuadro suits Windows-only users who prefer per-window floating references with zero installation.

When to consider a paid tool

All three free tools share the same ceiling. If any of these describe your situation, you have probably already felt it:

• You have accumulated references across multiple projects and cannot find a specific image anymore.
• You are spending time scrolling a large canvas looking for one image you know you saved somewhere.
• You are running PureRef for the canvas and Eagle (or a manual folder structure) for organization, and you want one app.
• You want to save images from websites with one click and have them instantly searchable.
• You want to find images by dominant color, visual similarity, or tag.

For a fuller look at the comparison, see the refern vs PureRef comparison and best PureRef alternatives for artists. For what refern looks like as a direct Eagle replacement, see best Eagle alternatives.