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Substack Archive Search - Substack Post Indexer

By Neo Cortex LLC

Search any Substack archive instantly. Build a private, offline index to find posts by title or full-text

View Chrome Web Store

Time on the storeUnder a yearA rough range, not an exact date

Store users145As shown on the Chrome Web Store

Chrome Web Store rating5.0 / 516 ratings on the Chrome Web Store

Last store update29 Aug 2026Version 1.0.6, 39 days ago

Inside the extension

Substack Archive Search - Substack Post Indexer developer product preview 1

Product image 1 of 5

Reviews

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Permissions & access

Access levelHigh

Can read and change every website you visit.

What it’s allowed to do, not what it actually does. Not a safety rating.

Permissions 4

Sensitive2

Read and change data on every website<all_urls>
Ask for your Google account sign-inidentity

Standard2

Save its own settingsstorage
Store large amounts of its own dataunlimitedStorage

Members also see when a new version asks for new access.

Website access All

All websites

Extension ID: nfilihaooibglgilhcnipnifjjoeaenb
Package size: 6.5MiB
Manifest: Version 3

The maker

Neo Cortex LLC has 30 listings on the store. Updates most of their listings often.

Listings: 30
Combined store users: ≈24.9K
Store Featured: 17
Updated in the last 90 days: 30 of 30

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Combined users can count the same person more than once. See all 30 listings

Ext Watch AI

Should you build in this niche?

One research report for Substack Archive Search - Substack Post Indexer. Reports come with Plus, Pro and Max.

Takeaway & demandCited takeaway and search volumes
Traffic & domainPopularity rank, visits and authority
Money & pricingPlans and prices from the maker’s site
ReviewsComplaints and praise, quoted
Competitors & ranksRank against the closest listings
Build opportunityWhat to build and how to position it

Every number shows its source and date
Ready in a minute or two
Report and PDF yours for 30 days