Who is StreamStack for?

StreamStack is a consumer product built for sports fans and viewers who follow multiple live streams.

Yes — StreamStack is free to use.

What platforms does StreamStack run on?

StreamStack runs on the web and embeddable surfaces.

Is StreamStack still maintained?

Unverified. StreamStack has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to StreamStack?

Similar projects tracked by PulseGate include Stream Video Downloader, Streamulti, and HLS Stream Downloader.

Who makes StreamStack?

StreamStack is developed by StreamStack.

When did StreamStack launch?

StreamStack first shipped in 2026.

Back to the index

StreamStack

Name: StreamStack
Author: StreamStack

mozilla.orgVideo & media players

StreamStack is a Firefox extension that detects HLS video streams playing across browser tabs and combines them into a multi-view display. Users can choose grid or spotlight layouts, refresh or remove individual streams, and follow multiple sports or gaming broadcasts at once.

FreeWebEmbeddable

Visit mozilla.org

Overview

8 features

In the Video & media players space, StreamStack takes a focused approach. It focuses on watching multiple live video streams simultaneously without switching between browser tabs. It is built as a consumer product for sports fans and viewers who follow multiple live streams. It is available for free. It runs on the web and embeddable surfaces.

StreamStack builds and maintains StreamStack, and it first shipped in 2026. Key capabilities include HLS detection, multi-stream view, and grid layouts. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

HLS detection
Multi-stream view
Grid layouts
Spotlight layout
Stream swapping
Stream removal
Stream refresh
Cross-tab detection

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed20 Sep · 04:44 UTC
StreamStack verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about StreamStack

What is StreamStack?: StreamStack focuses on watching multiple live video streams simultaneously without switching between browser tabs. It is catalogued under Video & media players on PulseGate.
Who is StreamStack for?: StreamStack is a consumer product built for sports fans and viewers who follow multiple live streams.
Is StreamStack free?: Yes — StreamStack is free to use.
What platforms does StreamStack run on?: StreamStack runs on the web and embeddable surfaces.
Is StreamStack still maintained?: Unverified. StreamStack has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to StreamStack?: Similar projects tracked by PulseGate include Stream Video Downloader, Streamulti, and HLS Stream Downloader.Stream Video Downloader Streamulti HLS Stream Downloader
Who makes StreamStack?: StreamStack is developed by StreamStack.
When did StreamStack launch?: StreamStack first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
First seen: 20 Sept 2026
Built for: sports fans and viewers who follow multiple live streams
Model: B2C
Solves: Watching multiple live video streams simultaneously without switching between browser tabs.

Registered as

Firefox Add-ons: streamstack

Index record

Indexed: 20 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 20 Sep 2026

Identity audit (13)

Slug: streamstack-mozilla-org
Lifecycle state recorded: 20 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 20 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 20 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/streamstack

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do