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Website, pricing, platforms and company facts side by side.
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| Website | karma.domains | opalstack.com |
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| Platforms | — | |
| Company | Startup from Argentina · 10 - 19 employees · 2024 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Karma.Domains is the ultimate tool for efficient domain analysis, helping you avoid spammy domains and discover the best options for your projects. SEO SPAM Content Detector Our own Karma Score metric: a domain history assessment metric based on the quality of content in the Web Archive. The...
No description of Opalstack yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Karma.Domains and Opalstack.
Karma.Domains's answer
Karma Domains is unique in that it not only displays a numerical SEO spam metric but also shows exactly how this metric was formed.
Additionally, Karma Domains doesn't require a monthly subscription; it operates on a credit system. You purchase the number of credits you need and use them at any time.
Karma.Domains's answer
Karma Domains analyzes the latest snapshots in the Wayback Machine, detecting signs of SEO spam such as redirects, abrupt changes in content themes, toxic topics, changes in the site's language, cloaking from bots, and more. It presents the detected signs in a clear and user-friendly report.
Also, Karma Domains doesn't have a monthly subscription but operates on a credit system. You purchase the required number of credits and use them at any time.
Karma.Domains's answer
The primary audience consists of SEO specialists and PBN website builders.
Karma.Domains's answer
I didn’t like Spamzilla because of the monthly subscriptions and incomplete data from the Web Archive. So, I created my own alternative—with blackjack and h**kers.
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