If you're looking for a free tool to boost your online presence, Ubersuggest is a good choice. It includes keyword research, content ideas and backlink analysis to help you improve your search engine rankings and content marketing strategy. Ubersuggest lets you analyze competitors, spot influential backlinks and get hundreds of keyword suggestions, so it's a good all-purpose tool for increasing your online presence.
Another good choice is Moz. Although it's got a full-featured suite of SEO tools, including Moz Pro and MozBar, it also offers a range of free SEO tools like Keyword Explorer, Link Explorer and Competitive Research. Moz lets you track SERPs, analyze competitors and optimize local business listings, so it's good for both solo marketers and companies.
If you want a broader suite of tools, check out Ahrefs. Ahrefs has tools like Site Explorer, Keywords Explorer and Rank Tracker that let you monitor SEO activity from a single interface. It also has tools for spotting content opportunities and analyzing competitors, so you can climb the search engine rankings and drive more traffic.
Last, Keywords Everywhere is a freemium browser extension that gives you keyword data, search volume and competitive analysis on Google, YouTube and Bing. It can help you fine-tune your SEO, improve social media marketing and optimize listings, so it's a good tool for digital marketers trying to increase their online presence.