Download Mosaicus 0.1.0

Mosaicus is free software under the MIT license; its source will be published in the future. Released 2026-10-29.

Mosaicus isn't digitally signed, so Windows and macOS warn you before they open it the first time. Each platform's section below says how to get past the warning. To check that a file is exactly the one published here, compare its SHA-256 with the one listed beside it (the commands are under Checking a download).

#Windows

For 64-bit Windows 10 and 11.

#The installer

Installs Mosaicus for your account (no administrator rights needed), with a Start menu entry. Uninstall it from Settings ▸ Apps. If Windows lacks the Microsoft Edge WebView2 runtime, which Mosaicus draws its window with, the installer downloads it.

#The portable zip

Mosaicus.exe on its own, to run from any folder: extract the zip and run it. It needs the WebView2 runtime, which Windows 11 and an up-to-date Windows 10 already have. It keeps its settings in your user profile like the installed app.

#The first time you run it

Windows SmartScreen says Windows protected your PC. Click More info, check that it names Mosaicus_0.1.0_x64-setup.exe (or Mosaicus.exe) with Unknown publisher, then Run anyway. SmartScreen asks only the first time.

#macOS

One app for Apple silicon and Intel Macs, macOS 10.15 (Catalina) or later. Open the disk image and drag Mosaicus into your Applications folder.

#The first time you open it

The app isn't notarized by Apple, so macOS won't open it with a double-click at first.

• macOS 15 (Sequoia) and later: double-click Mosaicus; macOS says it can't verify it. Click Done, open System Settings ▸ Privacy & Security, scroll down to "Mosaicus" was blocked to protect your Mac and click Open Anyway, then confirm with your password.
• macOS 14 (Sonoma) and earlier: Control-click (or right-click) Mosaicus in Applications, choose Open, then Open again in the message.

After that it opens like any other app. If macOS says instead that the app is damaged and can't be opened, it has kept the download's quarantine mark: in Terminal, run

xattr -dr com.apple.quarantine /Applications/Mosaicus.app

#Linux

For 64-bit x86 Linux with glibc 2.35 or later: Ubuntu 22.04, Debian 12, Fedora 36 or later, Arch and the distributions based on them. Linux has no publisher warning to get past; check the SHA-256 instead.

#AppImage: any distribution

One file that runs without installing. Make it executable and run it:

chmod +x Mosaicus_0.1.0_amd64.AppImage
./Mosaicus_0.1.0_amd64.AppImage

If it says FUSE is missing, install libfuse2 (libfuse2t64 on Ubuntu 24.04, fuse2 on Arch), or run it with --appimage-extract-and-run.

#Debian and Ubuntu

sudo apt install ./Mosaicus_0.1.0_amd64.deb

#Fedora

sudo dnf install ./Mosaicus-0.1.0-1.x86_64.rpm

Both packages bring in the WebKitGTK libraries Mosaicus needs and add it to your applications menu.

#Checking a download

Each file's SHA-256 is listed beside it, and all of them are in SHA256SUMS. Compute the downloaded file's and compare:

• Windows (PowerShell): Get-FileHash .\Mosaicus_0.1.0_x64-setup.exe
• macOS (Terminal): shasum -a 256 Mosaicus_0.1.0_universal.dmg
• Linux: with SHA256SUMS in the same folder, sha256sum -c SHA256SUMS --ignore-missing

#Next

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