Cheapest SEO software
14 products with sourced pricing and capability data, 6 with a free plan. Entry paid plans median $39.45/mo; the cheapest product covering the 9 most common capabilities here is SE Ranking from $129/mo. Pick the one you pay for today to find a cheaper replacement.
Read the guide: Cheapest Semrush and Ahrefs alternatives, by the numbers →
Same job. Way less money.
SEO price ladder
Every product's entry point, cheapest first: the free plan if there is one, otherwise the lowest paid plan as a monthly equivalent (yearly-billed plans divided by 12). Prices as observed on official pricing pages.
| Product | Free plan | Paid from | Plan | Verified |
|---|---|---|---|---|
| Screaming Frog SEO Spidertechnical seo | Free | $16.58/mo | Paid Version (licence) · billed yearly | 2026-10-29 |
| Sitebulbalso fits here | — | $18/mo | Lite | 2026-10-27 |
| Mangoolsseo suite | — | $18.85/mo | Basic · billed yearly | 2026-10-26 |
| EngineeringScorealso fits here | Free | $19/mo | Starter | 2026-10-27 |
| Ahrefsseo suite | Free | $29/mo | Starter | 2026-10-26 |
| SEO PowerSuiteseo suite | Free | $29.08/mo | Professional · billed yearly | 2026-10-26 |
| LowFruitskeyword research | — | $29.90/mo | Standard | 2026-10-26 |
| Frasecontent optimization | — | $49/mo | Starter | 2026-10-26 |
| Surfercontent optimization | — | $49/mo | Discovery · billed yearly | 2026-10-27 |
| Seobility | Free | $67.02/mo | Premium | 2026-10-27 |
| Writesonicai search visibility | — | $79/mo | Starter · billed yearly | 2026-10-26 |
| Sitechecker | — | $99/mo | Basic | 2026-10-27 |
| SE Rankingseo suite | — | $129/mo | Core | 2026-10-26 |
| Semrushseo suite | Free | $139/mo | SEO | 2026-10-26 |
Cheapest seo tool for each capability
For every capability at least a third of these products support: the cheapest product that covers it, free plans counted at $0.
- Need AI search visibility, competitor analysis, content optimization or 2 other capabilities?
- SEO PowerSuite — free plan
- Need API access or white-label reporting?
- Mangools — from $18.85/mo (Basic plan), billed yearly
- Need backlink analysis?
- Semrush — free plan
- Need keyword research?
- Seobility — free plan
- Need site audit?
- EngineeringScore — free plan
Frequently asked
What is the cheapest SEO software?
Screaming Frog SEO Spider has the lowest paid entry price we have sourced, from $16.58/mo (Paid Version (licence) plan), billed yearly. 6 of the 14 products also offer a free plan.
Which SEO tools have a free plan?
6 of the 14 we track: Ahrefs, EngineeringScore, SEO PowerSuite, Screaming Frog SEO Spider, Semrush, Seobility. Free plans carry limits; each product page lists them.
How much does SEO software cost?
Paid entry plans in our data run from $16.58/mo to $139/mo, with a median of $39.45/mo across 14 priced products (monthly equivalents; yearly-billed plans divided by 12).
Which SEO tool is cheapest with ai search visibility, competitor analysis and 3 other capabilities?
SEO PowerSuite, free plan.
Which SEO tool is cheapest with api access or white label reporting?
Mangools, from $18.85/mo (Basic plan), billed yearly.
When were these prices checked?
Between 2026-10-26 and 2026-10-29, on the vendors' official pricing pages.