Sparrow is a B2B product built for developers and designers.

Does Sparrow have a free plan?

Yes — there is a free tier, with paid plans for advanced use.

What platforms does Sparrow run on?

Sparrow runs on the web and embeddable surfaces.

Is Sparrow still active?

Unverified. Sparrow 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 Sparrow?

Similar projects tracked by PulseGate include ZenPress, StarPulse, and CKB.

Sparrow is developed by Sparrow.

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Sparrow

Name: Sparrow
Author: Sparrow

trysparrowcss.comDeveloper Tools

Sparrow is a lightweight browser extension that provides a complete toolkit for inspecting any website. It offers DevTools-style CSS inspection (including Tailwind class detection), measurement rulers, color and font extractors, asset lists, and the ability to pin annotations and feedback directly on live pages. Designed for developers, designers, and agencies, it supports live collaboration and works on production, staging, and localhost sites. A free tier is available with paid plans for advanced features.

FreemiumWebEmbeddable

Visit trysparrowcss.com

Overview

7 features

Sparrow sits in PulseGate's Developer Tools category. Understanding, documenting, and collaborating on the design and CSS of any live website without losing context or switching tools. It is built as a B2B product for developers and designers. There is a free tier. It ships for the web and embeddable surfaces.

Behind Sparrow is Sparrow, and it first shipped in 2026. Key capabilities include CSS inspector, element annotation, and ruler tool.

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

CSS inspector
Element annotation
Ruler tool
Color extractor
Font inspector
Asset extractor
Live collaboration

Built with & integrations

Hosting

Vercel

Auth

clerk

Runs on

BrowserEmbeddable

Detected from

Vercel: x-vercel-id header · x-vercel-cache header

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed21 Jul · 23:10 UTC
Sparrow - CSS Inspector & Annotator verified against its public source
Source: PulseGate · Open

Frequently asked questions about Sparrow

What is Sparrow?: Understanding, documenting, and collaborating on the design and CSS of any live website without losing context or switching tools. It is catalogued under Developer Tools on PulseGate.
Who is Sparrow for?: Sparrow is a B2B product built for developers and designers.
Does Sparrow have a free plan?: Yes — there is a free tier, with paid plans for advanced use.
What platforms does Sparrow run on?: Sparrow runs on the web and embeddable surfaces.
Is Sparrow still active?: Unverified. Sparrow 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 Sparrow?: Similar projects tracked by PulseGate include ZenPress, StarPulse, and CKB.ZenPress StarPulse CKB
Who makes Sparrow?: Sparrow is developed by Sparrow.
How long has Sparrow been around?: Sparrow first shipped in 2026.

At a glance

Pricing: Freemium · pricing page detected · free tier
Platforms: Web
Languages: English
First seen: 21 Jul 2026
Built for: developers and designers
Model: B2B
Solves: Understanding, documenting, and collaborating on the design and CSS of any live website without losing context or switching tools.

Registered as

Firefox Add-ons: sparrow-css-toolkit

Index record

Identity confidence: High · 89
Indexed: 21 Jul 2026
Lifecycle: Alive
First seen: Jul 2026
Last seen: 21 Jul 2026

Identity audit (12)

Slug: sparrow-css-inspector-annotator-trysparrowcss-com
Lifecycle state recorded: 21 Jul 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 21 Jul 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.
Canonical URL: https://trysparrowcss.com/

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Also in Developer Tools

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