Hunted, not submitted
The crawler walks Flathub and the forges looking for real flatpak-builder manifests, .flatpak bundles and .flatpakrepo remotes. Nobody has to submit anything, and nobody is hidden for being unverified.
Open-source Flatpak apps, hunted from everywhere
One store, every open-source Flatpak app.
Flatsonar finds open-source apps wherever they live (Flathub, GitHub, GitLab, Codeberg, project remotes, release bundles) and puts them in one store. Every listing credits the people who made it. Anything risky gets explained, and you are asked twice before it runs.
5,503open-source apps
2,479found outside Flathub
1,319with a sponsor button
2,589verified creators
How the hunt works
Three things happen to every app before it reaches you.
Credit where it is due
Every listing names the creator and links the source. FUNDING.yml and AppStream donation links become a Sponsor button. Flatsonar is the shop window; the people behind the apps get the money.
Warned twice, then it is your call
Sandbox permissions are scored, manifests are audited, the pulled files get a ClamAV scan. Yellow or red means two dialogs and two Sures. Nothing is banned; nothing is quietly waved through.
Who publishes this?
An app id is a claim: io.github.alice.Foo says “alice on GitHub made this”. Flatsonar checks that claim wherever the manifest was actually found.
Verified
The creator demonstrably controls the id: Flathub verification, or the hosting account owns the namespace, or their domain serves a well-known file listing it.
Reviewed
On Flathub: the manifest went through review and Flathub built it, but the developer has not verified the id.
Unverified
Off Flathub and ownership could not be confirmed. Nothing known against it, but you are told before installing.
Suspicious
A concrete red flag: an id claiming a namespace the repo neither owns nor builds from, or a build that does things a build should not.
Found outside Flathub
Apps that only exist as a manifest, a bundle or a project remote.
Creators you can support
Most-starred apps whose authors take sponsorship.
OrcaSlicer
by SoftFever
Get even more perfect prints!
ImageGlass
by Duong Dieu Phap
A Fast, Seamless Photo Viewer
CopyQ
by Lukas Holecek
Advanced clipboard manager
Krita
by Krita Foundation
Digital Painting, Creative Freedom
Krita
by Krita Foundation
Digital Painting, Creative Freedom
Bottles
by The Bottles Contributors
Run Windows software
VitaSuwayomi
by Breezyslasher
Suwayomi manga reader for desktop and consoles
PhantomEar
by amarty2030
Stealth AI-powered real-time meeting assistant overlay
Cable
by Magillos
PyQt6 application to modify Pipewire and Wireplumber settings
MailGrabber
by pseud0nymtn
Cluster and review mailbox senders from Outlook and Gmail
MorsVitaEst
by Simon Schubert
AI assistant powered by Ollama, Gemini, ChatGPT and more
Browse by category
Common questions
Can't find a Flatpak app?
Search Flatsonar. It hunts Flathub, GitHub, GitLab and Codeberg for open-source Flatpak apps, including ones that never made it onto Flathub - a manifest or a release bundle sitting in a repository is enough to get found.
Is there a Flatpak app store besides Flathub?
Yes: Flatsonar. Most stores only list what people submit; Flatsonar's crawler goes looking instead, so an app shows up whether or not anyone submitted it.
How do I know if a Flatpak app is safe to install?
Every app on Flatsonar carries a sandbox risk level, a publisher trust level and a maintenance signal, worked out straight from its manifest and repository. Anything risky gets explained before you install it, not after.
Is Flatsonar free?
Yes. Flatsonar itself is free, open-source software (GPL-3.0-or-later), and every app it lists is free and open-source too.
Get Flatsonar
A GTK4 desktop app for Linux that installs through the two-gate check (pull, unpack, scan, re-score, ask twice, deploy) and shows you what is already installed with the same scoring.
A Flatpak bundle for x86_64; its GNOME runtime comes from Flathub on install. It scores red by its own rules: a store has to talk to org.freedesktop.Flatpak. Release notes
flatpak install --user ./flatsonar.flatpak
flatpak run io.github.abutauskas.Flatsonar