
SEMRush
Moz
Profound
SE Ranking
Otterly.AI
Serpstat
Surfer SEO
Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!

SQL Fiddle
DB Fiddle
Online SQL Editor
Rextester
Online SQL playground for testing and sharing SQL snippets. SQLite, MySQL and PostgreSQL.
Which is more popular?
Based on our record, Ahrefs seems to be more popular. It has been mentioned 123 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | ahrefs.com | extendsclass.com |
| Pricing | — | |
| Company | Startup from Singapore | 2022 |
| Listed in |
In their own words, as submitted to SaaSHub.


Ahrefs is trusted by SEOs and marketing professionals worldwide as the ultimate toolset for SEO, powered by industry-leading data. Ahrefs crawls the web, stores tons of data and makes it easily accessible via a simple user interface. The data can be used to aid keyword research, link building,...
It is a SQL playground which allows to test SQL online. Run SQL queries for SQLite, MySQL and PostgreSQL databases. Share snippets.
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
Walkthroughs and reviews on video.
Ahrefs Review and Tutorial: Is This The Only SEO Tool You Need?
More videos
No ExtendsClass SQL Online videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Ahrefs and ExtendsClass SQL Online. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


You already pay for Ahrefs or Semrush: try their AI module first; neither offers a trial on it.
I've really enjoyed using Ahrefs to inform my content creation, particularly because the Keyword Explorer is so useful for identifying low-difficulty keywords.
For full management : Semrush or Ahrefs cover research, auditing, and tracking in one place, making them ideal for agencies managing multiple clients. See our guide to the best SEO tools for agencies.
We have no reviews of ExtendsClass SQL Online yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Marketing-led growth (MLG) involves extensive marketing initiatives to drive customer acquisition, retention, and expansion. Brands such as HubSpot and Ahrefs have found success with MLG by leveraging large content libraries to generate... - Source: dev.to / 7 months ago
Ahrefs provides industry-leading backlink analysis alongside powerful content research capabilities that help WordPress sites build authority. Site Explorer reveals your complete backlink profile while identifying link-building... - Source: dev.to / 10 months ago
Domain Rating is a proprietary metric developed by Ahrefs that measures the strength of your website's backlink profile. - Source: dev.to / about 1 year ago
Tracking ExtendsClass SQL Online since Oct 2022.
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An online tool for testing, sharing and collaborating on SQL snippets
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Profound helps brands gain visibility in AI-generated answers, optimize their presence in LLM-based answer engines, and stay competitive in the zero-click world.
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Free Online SQL Editor
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