Search keyword tools are essential for conducting keyword research, understanding search trends, and optimizing your content for search engine optimization (SEO). Here are some popular search keyword tools:

1. Google Keyword Planner: Google Keyword Planner is a free tool provided by Google Ads. It allows you to research keywords and get insights into search volume, competition, and suggested bid prices. It’s a valuable tool for understanding the popularity and competitiveness of keywords.
2. SEMrush: SEMrush is a comprehensive SEO tool that offers a range of features, including keyword research. It provides keyword analytics, search volume data, keyword difficulty scores, and related keyword suggestions. SEMrush also offers competitive analysis and allows you to track keyword rankings.
3. Ahrefs: Ahrefs is another popular SEO tool that offers a robust keyword research feature. It provides keyword difficulty scores, search volume data, click-through rate (CTR) estimations, and keyword suggestions. Ahrefs also offers competitor analysis and backlink analysis.
4. Moz Keyword Explorer: Moz Keyword Explorer is a keyword research tool that provides search volume data, keyword difficulty scores, and organic click-through rates. It also offers keyword suggestions and helps identify long-tail keyword opportunities.
5. Ubersuggest: Ubersuggest is a free keyword research tool that provides search volume data, keyword suggestions, and keyword difficulty scores. It also offers domain and content analysis features to help you understand your competitors.
6. KeywordTool.io: KeywordTool.io is a keyword research tool that generates keyword suggestions from various sources, including Google Autocomplete. It provides search volume data, keyword competition scores, and long-tail keyword suggestions. KeywordTool.io supports multiple search engines, including Google, Bing, YouTube, and Amazon.
7. Google Trends: Google Trends is a free tool that allows you to explore search trends over time. It helps you understand the popularity of specific keywords and identify rising trends. Google Trends also provides related queries and geographical insights.

These keyword tools can assist you in finding relevant keywords, understanding search volumes, assessing keyword difficulty, and discovering keyword opportunities. It’s often beneficial to use multiple tools to gain a comprehensive understanding of keyword data and trends.