Looking for something like keyword.io? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 5 are free or have a free plan and 4 are open source.
Find long-tail keyword ideas from Google, Amazon, and YouTube with keyword.io's research tool for SEO and content planning.
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | DiagnoSEO | — | Not stated | Web |
| 2 | Keyword Tool | — | Not stated | Web |
| 3 | kwrds.ai | — | Not stated | Web |
| 4 | Semrush's Keyword Magic Tool | — | Not stated | Web |
| 5 | AnswerThePublic | Paid | Not stated | Web |
| 6 | SEO PowerSuite | — | Not stated | Web |
| 7 | Keyword Surfer | Free | Not stated | Browser extension, Web |
| 8 | Serpstat | — | Not stated | Web |
| 9 | Lunroo | — | Not stated | Web |
| 10 | Moz Pro | Free trial | Not stated | Web |
DiagnoSEO combines SEO and content marketing tools for audits, keyword research, backlink checks, content editing, and WordPress.
Keyword Tool researches search terms across Google, YouTube, Amazon and other platforms, with keyword data for SEO and PPC.
kwrds.ai generates keyword ideas and People Also Ask questions to support search research for businesses and marketers.
Find keyword ideas for SEO and AI search using Semrush's free keyword research tool.
AnswerThePublic uncovers real questions users ask across platforms with keyword research, content ideas, and an AI dashboard showing how AI describes a keyword.
Download a suite of SEO software for rank tracking, keyword research, site audits and link analysis.
Use Keyword Surfer, a free Chrome extension, to view search volume, cost per click, and estimated traffic in Google results.
Research keywords, backlinks and site performance with Serpstat's tools for SEO and content work.
Lunroo researches, writes, optimizes, and publishes SEO content to a CMS with a human approval step.
Research keywords, track rankings and analyze site links with Moz's SEO software and learning resources.
Clicks.so offers SEO and answer-engine tools for site audits, keyword research, prompt tracking, and site analytics.
Research keywords, analyze backlinks and audit websites with Ubersuggest's SEO tools.
Research keywords and review search and advertising data with WordStream's free keyword tool.
Clearscope helps teams write, optimize, and track content visibility across Google and AI search platforms.
WriterZen supports SEO content production from keyword research through content writing.
Group keywords into topic clusters and create content briefs to plan topical coverage for search.
30x-seo packages 23 Claude Code skills for technical SEO, content optimization, keyword research, backlink analysis, and AI visibility monitoring.
Soovle gathers keyword suggestions from multiple search engines, helping users compare related terms in one view.
Enter a keyword to find semantically related search terms with KeySearch's free generator.
This Claude Code project uses DataForSEO for keyword research, rank tracking, backlink audits, technical crawls, competitor analysis, and PDF reports.
This open-source marketing system covers SEO, answer and generative engine optimization, paid media, content, CRM, and analytics.
Browse free SEO tools for webmasters who want to improve traffic from search engines.
Track search rankings across 107,000 locations and monitor brand visibility in chat-based AI search tools.
Track search engine positions with SerpBear, an open-source application for monitoring website rankings.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative
