Inferred · not functionally tested: Lento is an open-source project built for music listeners and browser-based music creators.

Basis unknown · not verified: Yes — Lento is open source under the Open Source license and free to use.

What platforms does Lento run on?

Basis unknown · not verified: Lento runs on the web and embeddable surfaces.

What are alternatives to Lento?

Similar projects tracked by PulseGate include Slowed & Reverb, BetterCallSlow, and BassBooster Lite.

Back to the index

Lento

Name: Lento
Author: uboaaaa

github.comVirtual instruments & audio effects

PulseGate's liveness check found it on 10 Oct 2026; it is registered on the Chrome Web Store and Firefox Add-ons and has been in the index since 10 Sep 2026. How this is checked

Lento is an open-source Firefox and Chrome extension that modifies audio playback on supported music streaming sites. It provides slowing, reverb, and bass boost effects for listeners who want to customize streamed music in their browser.

Inferred · not functionally tested

Open SourceWebEmbeddable

Visit github.com

Overview

6 features

Purpose: Adding playback effects such as slowed speed, reverb, and bass boost to music streaming websites.

Inferred · not functionally tested

Audience: music listeners and browser-based music creators

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: open_source · license: Open Source · platforms: WEB · deployment: browser, embeddable

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: github.com · addons.mozilla.org · chromewebstore.google.com. These links do not verify the individual claims.

Lento is a Virtual instruments & audio effects project. Inferred · not functionally tested: It focuses on adding playback effects such as slowed speed, reverb, and bass boost to music streaming websites. Inferred · not functionally tested: It is built as an open-source project for music listeners and browser-based music creators. Basis unknown · not verified: Lento is open source under the Open Source license. Basis unknown · not verified: It ships for the web and embeddable surfaces.

It is developed by uboaaaa, and it first shipped in 2024. Inferred · not functionally tested: Among its 6 catalogued features are playback slowing, reverb effects, and bass boost.

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

Tasks: Inferred · not functionally tested

Playback slowing
Reverb effects
Bass boost
Streaming-site support
Chrome extension
Firefox extension

Topics: Inferred · not functionally tested

Built with & integrations

Connectors

chrome

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Public signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore listing found

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed10 Sep · 03:26 UTC
Lento: Slow, Reverb, Bass Boost seen via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Lento

What does Lento do?: Inferred · not functionally tested: Lento focuses on adding playback effects such as slowed speed, reverb, and bass boost to music streaming websites. It is catalogued under Virtual instruments & audio effects on PulseGate.
Who is Lento for?: Inferred · not functionally tested: Lento is an open-source project built for music listeners and browser-based music creators.
Is Lento free?: Basis unknown · not verified: Yes — Lento is open source under the Open Source license and free to use.
What platforms does Lento run on?: Basis unknown · not verified: Lento runs on the web and embeddable surfaces.
Is Lento still active?: PulseGate's liveness check found it on 10 Oct 2026.
What are alternatives to Lento?: Similar projects tracked by PulseGate include Slowed & Reverb, BetterCallSlow, and BassBooster Lite.Slowed & Reverb BetterCallSlow BassBooster Lite
Who develops Lento?: Lento is developed by uboaaaa.
When did Lento launch?: Lento first shipped in 2024.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
Model: Open source
Purpose: Adding playback effects such as slowed speed, reverb, and bass boost to music streaming websites.Inferred · not functionally tested
Audience: music listeners and browser-based music creatorsInferred · not functionally tested

Registered as

Chrome Web Store: hnlilbkeokfjgnlimecdfbinapfeemnj
Firefox Add-ons: lento

Developer

uboaaaa

Index record

Indexed: 10 Sep 2026
Lifecycle: Alive
Last seen: 10 Sep 2026

Identity audit (12)

Slug: lento-slow-reverb-bass-boost-github-com
Lifecycle last checked: 10 Oct 2026
Identity check: 2 linked identifiers: checked, undecided
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 10 Sep 2026
Canonical URL: https://github.com/uboaaaa/lento-ext

Cite this record

Lento. PulseGate. Record last updated 10 Sep 2026. https://www.pulsegate.ai/apps/lento-slow-reverb-bass-boost-github-com

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