Moz Keyword Explorer offers powerful keyword research with limited free access. Looking for other free (or freemium) SEO tools that let you discover keywords without paying a subscription? Below are 20 alternatives you can start using right away.
Get targeted exposure with custom position pinning and highlighted placement.
Neil Patel’s keyword research tool provides search volume, SEO difficulty, CPC and content ideas with a generous free daily quota.
Official Google Ads tool that shows keyword ideas, average monthly searches and competition data – completely free with a Google Ads account.
Shows search volume, CPC and related keywords directly in Google SERPs; completely free and works instantly while you browse.
Generates visual maps of questions and prepositions people ask around a seed keyword; free tier allows 3 searches per day.
Harvests autocomplete suggestions from Google, YouTube, Bing, Amazon and more; free tier provides up to 750+ keyword ideas per search.
Aggregates keyword suggestions from Google, YouTube, Bing, Amazon, Wikipedia, and more in a single, easy‑to‑use interface.
Analyzes the popularity of search terms over time and across regions; great for spotting seasonal spikes and emerging topics.
Pulls thousands of Google autocomplete suggestions instantly; simple CSV export and unlimited free usage.
Extracts keyword ideas from Reddit posts and comments, revealing niche long‑tail terms that are often overlooked.
Provides the top 100 keyword ideas for a seed term from Google, YouTube, Amazon and Bing, plus basic search volume data.
Limited free access to SEMrush’s keyword database; view volume, difficulty, SERP features and related keywords for up to 10 queries per day.
Freemium plan offers 10 keyword lookups per day with volume, CPC, competition and related keyword suggestions.
Free tier provides up to 2,500 keyword ideas with search volume and competition metrics, ideal for small‑scale projects.
Microsoft’s counterpart to Google’s planner; offers keyword ideas, search volume and competition data for Bing searches.
Russian search engine’s keyword tool; shows query frequencies, related phrases and seasonal trends – free without registration.
Visualizes “People also ask” questions from Google for a seed keyword, helping you uncover content gaps and long‑tail queries.
A lightweight Android/iOS app that delivers search volume and related keywords on the go, completely free.
Provides global monthly search volume for any keyword without registration; free tier allows up to 5 queries per day.
Shows actual queries that bring traffic to your site, impressions, clicks and average position – a free source of real‑world keyword data.
Offers a limited daily quota of keyword suggestions with volume, CPC and competition scores; useful for quick brainstorming.