Independent product research & review sites
We build and operate a portfolio of independent, single-topic product research sites.
Independent · Disclosed · Reviewed on schedule
Named on every site
Each site we publish credits Slate Mill Group in its footer and links back to this page.
One category per site
Every property covers a single product category in depth — no general-interest churn.
Disclosed on every page
Affiliate relationships are disclosed site-wide under one editorial policy.
The portfolio
82 sites across 82 categories, each maintained under the same standards.
Book-Lover Gifts & Reading Accessories
Shelf Gift
Single-category review site
About this site
EV Charging for Renters & Apartments
Renter Volt
Single-category review site
About this site
Premium Home Saunas, Cold Plunge & Red Light Recovery
Contrast Den
Single-category review site
About this site
Hair Styling Tools & Grooming Devices
Heat Index
Single-category review site
About this site
Hypoallergenic Jewelry & Accessories
Gentle Carat
Single-category review site
About this site
Car Interior Organization & Accessories
Cabin Command
Single-category review site
About this site
Espresso Machines & Home Coffee
Crema Method
Single-category review site
About this site
Budget Robot Vacuums
Cheapbot Co
Single-category review site
About this site
Self-Watering Planters & Plant Care
Wilt & Water
Single-category review site
About this site
…including 73 more beyond the featured set, filterable by category.
How we publish
Independence
Our sites are reader-supported: buying through their links may earn us an affiliate commission. That never changes the price you pay — and it never decides what we recommend.
Maintenance
Recommendations are re-examined on a recurring schedule, not published and forgotten. Discontinued products come out; better ones go in.
Accountability
Every site names its publisher, links to one shared disclosure and editorial policy, and offers a direct way to reach us.