UptimeRobot
UptimeRobot is a website monitoring service with a forever free plan that lets you register with just an email and monitor up to 50 websites, servers, or keywords with 5-minute intervals. Setup takes only a few clicks.
For faster checks and advanced features, paid plans offer 1-minute or 30-second intervals, along with SSL certificate, domain expiry, and heartbeat (cron job) monitoring. You can also create up to 100 status pages, customize them to match your brand, protect them with a password, and allow subscribers to receive updates.
Get notified instantly via email, SMS, voice calls, or integrations with Slack, Zapier, PagerDuty, Splunk On-Call, Telegram, Webhooks, Discord, Mattermost, Pushbullet, Microsoft Teams, Google Chat, Pushover, and more. Mobile push notifications are available through the iOS and Android apps.
Other features include maintenance windows, incident tracking with root cause analysis, tags, comments, and filters. Share account with other team members.
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Seobility
Seobility checks your complete website, by crawling all linked pages. All found pages with errors, problems with the on-page optimization or problems regarding the page content like duplicate content are collected and displayed in each check section. Of course, you can also analyze all problems of a single page in our page browser. For a sustainable and continuous review of your website, each project is constantly crawled and analyzed by our crawlers to track the progress of your optimization. You will also be notified by our monitoring service with the status of your website via e-mail, if server errors and major problems occur. Seobility not only provides a detailed SEO audit but also gives tips and instructions on how to fix the problems found on your website. By fixing these issues, you make sure that Google can access all of your relevant content and understand what it’s about in order to match it with suitable search queries.
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ContentSage
ContentSage is a B2B-focused keyword research tool designed to make finding relevant keywords faster and more strategic. It lets you seed research with topic ideas (rather than raw keywords) and reverse-engineers Google results to identify the exact search terms people use, delivering a “zero noise” list of actionable keywords. It supplements traditional keyword databases by crawling sources like Reddit, Quora, and “People Also Ask” to uncover hidden opportunities often overlooked by other tools. It auto-clusters keywords based on SERP similarity to reduce review time, and labels keywords with funnel intent (TOFU, MOFU, BOFU, Brand) for B2B content strategies. It also offers content gap analysis, shows AI Overviews that may cannibalize clicks, and surfaces intent trends across your competitors. You can export results to CSV, bookmark keywords, and integrate multiple keyword databases for broader coverage.
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