Similarweb alternatives: 4 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Similarweb: expensive for full access, and estimates for small sites can be inaccurate. We ranked 4 alternatives by how directly each one replaces Similarweb, then by reviews, real visits and how recently each app's facts were checked against its own website. Semrush currently ranks first.

Quick comparison

#	App	Pricing	Open source	Platforms	Verified facts	Score
1	Semrush	Free plan + paid	No	Web	3 of 3	66.5
2	Ahrefs	Free plan + paid	No	Web, Browser extension	4 of 4	59.6

1. SemrushTop pick
Best for: Agencies and marketing teams wanting one suite for SEO, competitor and content research
Free plan + paidWeb
66.5
score / 100
Why switch from Similarweb
Combines traffic analytics with a full SEO and PPC toolkit.
Pros
Very broad toolset covering most search marketing tasks
Large keyword and competitor databases
AI search visibility tracking alongside classic SEO
Cons
Costs rise fast with extra users and toolkits
Crowded interface with a learning curve
Free account is very limited
Visit Semrush Details and reviews
How this score is calculated
Editorial fit ×0.3100
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Semrush a good Similarweb alternative?
Verified facts
3 of 3 verified
Free trial
Yes (Semrush One)
Checked Oct 25, 2026semrush.com(opens source in a new tab)
Keyword research
Yes
Checked Oct 25, 2026semrush.com(opens source in a new tab)
Rank tracking
Yes
Checked Oct 25, 2026semrush.com(opens source in a new tab)
2. Ahrefs
Best for: SEO specialists and agencies who rely on backlink and competitor data
Free plan + paidWeb, Browser extension
59.6
score / 100
Why switch from Similarweb
Organic traffic estimates plus the backlink data Similarweb lacks.
Pros
Large, frequently updated backlink index
Free audits and analytics for your own verified sites
Clean, fast interface
Cons
Lower plans are restrictive with usage credits
Expensive on higher tiers
Fewer PPC and social features than Semrush
Visit Ahrefs Details and reviews
How this score is calculated
Editorial fit ×0.377
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Ahrefs a good Similarweb alternative?
Verified facts
4 of 4 verified
Free tier
Ahrefs Free for verified sites
Checked Oct 25, 2026ahrefs.com(opens source in a new tab)
Free site audit
5,000 crawl credits/month per project
Checked Oct 25, 2026ahrefs.com(opens source in a new tab)
Backlinks history
35 trillion external backlinks
Checked Oct 25, 2026ahrefs.com(opens source in a new tab)
Starter plan
200 Site Explorer credits
Checked Oct 25, 2026help.ahrefs.com(opens source in a new tab)

The best Similarweb alternative for…

The highest-ranked app in this list for each need.

Best Similarweb alternative for most people

Semrush

Combines traffic analytics with a full SEO and PPC toolkit.

Best Similarweb alternative for a free plan you can upgrade

Ahrefs

Organic traffic estimates plus the backlink data Similarweb lacks.

Best Similarweb alternative for working in the browser

SpyFu

Cheaper competitor keyword and ad research.

Similarweb alternatives: common questions

What is the best alternative to Similarweb?

Semrush ranks first right now. Combines traffic analytics with a full SEO and PPC toolkit. SpyFu and Ahrefs follow it in our ranking.

Is there a free alternative to Similarweb?

Yes. Semrush (free plan + paid) and Ahrefs (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Similarweb?

None of the 4 alternatives in this list is open source.

Why do people switch from Similarweb?

The complaints we hear most: expensive for full access; estimates for small sites can be inaccurate; weaker for technical SEO work.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Similarweb, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.