| Price from | — | $5/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 5 |
| Spec score · SEO tools | 9.1 (#12) | 9.3 (#3) |
| Spec score · Search Engine Optimization Software | 8.4 (#9) | 8.4 (#10) |
| API access | No | Yes |
| Company facts | LinkedIn lists Sitebulb as a privately held 2–10-person company founded in 2017 and headquartered in Biddenden, Kent. | LinkedIn lists Yoast as privately held, founded in 2010, headquartered in Wijchen, Gelderland, with 51–200 employees. |
| Founded | 2017 | 2010 |
| Free plan | No | Yes |
| Headquarters | Biddenden, Kent, United Kingdom | Wijchen, The Netherlands |
| Integrations | Officially listed integrations include Google Analytics, Google Search Console, Google Sheets and Data Studio. | Yoast documents integrations with Elementor, Semrush, Wincher, Easy Digital Downloads, ACF, Algolia, Jetpack, WooCommerce, Site Kit and Mastodon. |
| Keyword research | Yes | Yes |
| Rating on G2 | 4.5 out of 5 from 13 reviews | 4.5 out of 5 from 203 reviews |
| Rating on TrustRadius | No aggregate review rating or review count was displayed on the opened page; it listed Sitebulb pricing and category information. | 8.4 out of 10 from 307 reviews and ratings |
| System requirements | Windows requires 64-bit Windows 10 or 11 and at least 4 GB free RAM, with 8 GB recommended. | Yoast supports the two latest WordPress versions, PHP 7.4 or newer, at least 256 MB PHP memory, MySQL 5.6+ or MariaDB 10.0+ and modern browsers. |
| What it does | Sitebulb is a website crawler and technical SEO auditing product offered as desktop software and a browser-based cloud service. | Yoast SEO is a WordPress plugin that provides on-page SEO guidance, readability analysis, structured data, XML sitemaps and AI-oriented features. |
