What does Door Knocker do?

Quickly verifying which xdg-desktop-portal portals are available on a Linux system. It is catalogued under Other productivity on PulseGate.

Who is Door Knocker for?

Door Knocker is a consumer product built for linux desktop users and developers.

Is Door Knocker free?

Yes — Door Knocker is free to use.

Is Door Knocker still maintained?

PulseGate's automated liveness checks currently classify Door Knocker as active.

What are alternatives to Door Knocker?

Similar tools tracked by PulseGate include Best Door, Port Knocker, and Camtro.

Who makes Door Knocker?

Door Knocker is developed by tytan652.

When did Door Knocker launch?

Door Knocker first shipped in 2022.

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Door Knocker

Name: Door Knocker
Author: tytan652

FlathubOther productivity

Door Knocker is a utility for Linux desktops that checks the availability of all portals provided by xdg-desktop-portal. It offers a simple interface for users and developers to verify portal support on their systems.

Free

Linux

Visit Flathub

Overview

3 features

Door Knocker is an Other productivity product. Quickly verifying which xdg-desktop-portal portals are available on a Linux system. It is built as a consumer product for linux desktop users and developers. The product is available for free. It runs on Linux.

Behind Door Knocker is tytan652, and the product first shipped in 2022. Key capabilities include portal availability check, Simple UI, and linux desktop integration.

Portal availability check
Simple UI
Linux desktop integration

Built with & integrations

Runs on: Linux

Trust & compliance

LicenseProprietary

Verified signals

HTTPS Free tier

Recent events

Latest indexed changes and source events

IndexedJun 27, 9:23 PM
DoorKnocker verified by the PulseGate indexer
Source: PulseGate indexerOpen ↗

Frequently asked questions about Door Knocker

What does Door Knocker do?: Quickly verifying which xdg-desktop-portal portals are available on a Linux system. It is catalogued under Other productivity on PulseGate.
Who is Door Knocker for?: Door Knocker is a consumer product built for linux desktop users and developers.
Is Door Knocker free?: Yes — Door Knocker is free to use.
What platforms does Door Knocker run on?: Door Knocker runs on Linux.
Is Door Knocker still maintained?: PulseGate's automated liveness checks currently classify Door Knocker as active.
What are alternatives to Door Knocker?: Similar tools tracked by PulseGate include Best Door, Port Knocker, and Camtro.Best Door Port Knocker Camtro
Who makes Door Knocker?: Door Knocker is developed by tytan652.
When did Door Knocker launch?: Door Knocker first shipped in 2022.

At a glance

Platforms: Desktop
Languages: English
First seen: Dec 30, 2022
Activity: 🟢 Active
Status: 🟢 Active
Built for: linux desktop users and developers
Model: B2C
Solves: Quickly verifying which xdg-desktop-portal portals are available on a Linux system.

Developer

tytan652

Live coverage

Confidence: Medium · 70
Indexed: Jun 27, 2026
Lifecycle: Alive
Activity: Active
First seen: Dec 2022
Last seen: 3w ago

Identity audit (9)

Entity ID: cmqwvc0qv0fn8u8ctm92g9e3t
Slug: doorknocker-flathub-org
Verification state: Indexed for public listing
Claim / listing state: Unclaimed · listed: yes
Index status: Included in index
Latest evidence snapshot: Jun 27, 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Last updated: Jul 15, 2026
Canonical URL: https://flathub.org/apps/xyz.tytanium.DoorKnocker

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