Where Sucuri SiteCheck's free tier stops
Sucuri SiteCheck SiteCheck's free tier is a perpetual website security scanner, but its scope stops at remote browser-level checks. The included checks cover malware, blocklist status, DNS, uptime, redirects, and SEO spam. What it does not do is inspect server-side files or provide the deeper cleanup and monitoring services tied to paid plans. If you need authenticated scanning, continuous protection, response SLAs, or hands-on remediation, the free scanner is only a first-pass diagnostic and you will likely need another tool or a paid plan.
Switch table
| Sucuri SiteCheck | Checkbot | HostedScan | SEO Test | IntoDNS.ai | Coverity Scan | Test TLS | |
|---|---|---|---|---|---|---|---|
| scope focus | Browser-level website security checks | Crawled site audits for SEO, speed, and security | Website, server, network, and API vulnerability scanning | Single-page SEO checking | DNS, email, and CSP monitoring | Static analysis for registered open source projects | TLS configuration scanning |
| sites or targets | 1 URL at a time | Unlimited sites | 5 targets | 1 URL at a time | Saved domains | Approved projects only | 1 server on any port |
| per-run capacity | Not stated | 100 URLs per crawl | Unlimited scanning of included targets | Not stated | Not stated | Up to 28 builds per week for under 100K LOC, 21 for 100K to 500K, 14 for 500K to 1M, 7 for over 1M | Not stated |
| scan frequency or repetition | On-demand | Unlimited crawls | During the 14-day trial | On-demand | Nightly monitoring | Weekly build submission | On-demand |
| retention or monitoring | Not stated | Not stated | Not stated | Not stated | Scan history and dashboard | Analysis results access after approval | Not stated |
| Card required | - | No | Yes | Unknown | No | Unknown | Unknown |
| First paid tier | - | Professional, $10/month | Basic, $39/month | No paid tier listed | No paid tier listed | No paid tier listed | No paid tier listed |
The alternatives
Checkbot
FTV 51 / 100Checkbot's free plan is built for broad page-level audits in a browser extension. It allows 100 URLs per crawl, unlimited crawls, and unlimited sites, with ads supported. That makes it useful when you want to repeatedly test many pages without being limited to a single URL check. Its strongest free value is crawl volume across a site, plus security checks that include broken links, insecure pages, redirect chains, and mixed content. It falls short of SiteCheck on remote security focus, since it is more of an SEO and site quality crawler than a malware and blacklist scanner. Switch to it if you want repeated multi-page crawls more than a single security lookup.
- Beats Sucuri SiteCheck: Unlimited crawls and unlimited sites
- Falls short: No malware and blocklist-focused scanner
- Who should switch: Switch if you need repeated crawls across many pages and sites rather than a remote security check.
HostedScan
FTV 34 / 100HostedScan's free trial gives you 14-day access to Basic features, with 5 targets included and unlimited scanning of those targets during the trial. That makes it a stronger fit for teams that need a real vulnerability workflow for a short evaluation window. Compared with SiteCheck, it covers a broader scanner stack and can support scheduled scans, alerts, and reporting in paid tiers. The tradeoff is obvious: it is time-limited and requires a card, so it is not a permanent free checker. Choose it if you want to validate a scanning platform before paying, especially when you need more than a browser-side website scan.
- Beats Sucuri SiteCheck: Target-based vulnerability workflow
- Falls short: Only a 14-day trial
- Who should switch: Switch if you want to trial a broader vulnerability platform and can work within a short window.
SEO Test
FTV 7 / 100SEO Test is the simplest option here. Its free tier gives a free on-page SEO test result for a provided URL, with no extra workflow described. That makes it handy for one-off checks when you only need a quick page analysis and do not want a multi-feature scanner. It falls short of SiteCheck on security depth because the free offering is centered on SEO validation, not malware, blocklist, DNS, or uptime checks. It is also much narrower in scope overall. Pick it if your immediate need is a single quick URL review and you are not shopping for security monitoring or malware detection.
- Beats Sucuri SiteCheck: Simple single-URL page analysis
- Falls short: No security scanning depth
- Who should switch: Switch if you only need a lightweight URL check and do not need security diagnostics.
IntoDNS.ai
FTV 100 / 100IntoDNS.ai's free tier is more of a monitoring and diagnostics workspace than a point-in-time scanner. It includes nightly domain monitoring with alerts, scan history and dashboard, saved favorite domains, email fix digests, and a CSP Monitor for violation reports and strict CSP enforcement. For teams that want ongoing visibility into DNS and email configuration, this is more operational than SiteCheck. It falls short on browser-side website malware checks and visible-source inspections, so it is not a direct replacement for web content scanning. Use it if your main pain is domain, email, and policy drift rather than website malware lookups.
- Beats Sucuri SiteCheck: Ongoing domain and email monitoring
- Falls short: Not a browser-side malware scanner
- Who should switch: Switch if your priority is continuous DNS and email configuration monitoring.
Coverity Scan
FTV 48 / 100Coverity Scan is free for registered open source projects and includes access to analysis results, project registration after approval, downloadable submission software, and weekly build submission limits based on project size. It is a good match for maintainers who need code analysis on submitted builds rather than a website check from the browser. Its free access is meaningful, but it is gated to approved open source projects and the workflow centers on source and build analysis. That makes it much more suitable for code security than SiteCheck. Choose it if you are maintaining an open source project and want defect and vulnerability analysis at the source level.
- Beats Sucuri SiteCheck: Source and build analysis for open source code
- Falls short: Restricted to approved open source projects
- Who should switch: Switch if you maintain an approved open source project and need code analysis, not website scanning.
Test TLS
FTV 90 / 100Test TLS is a free browser-based TLS scanner for servers. It can test a domain name or IP address on any port and supports advanced protocol options, including STARTTLS for common services. That gives it a narrower but deeper focus than SiteCheck when the issue is certificate and TLS configuration rather than web content reputation or malware. It falls short on website security checks like blacklist status, redirects, and visible-source anomalies because it is built specifically for TLS. Pick it if you need to inspect transport security across services and ports without installing local tools.
- Beats Sucuri SiteCheck: TLS and certificate testing on any port
- Falls short: No website malware or blacklist checks
- Who should switch: Switch if TLS configuration is your main concern and you need port-level testing.
Two quick picks
Test TLS
Test TLS is the closest drop-in when the real problem is checking a site or service's exposure and configuration from the outside. It keeps the same browser-based, no-install style and stays focused on a single remote target, so the workflow change is small.
Checkbot
Checkbot gives the most free headroom because it allows unlimited crawls and unlimited sites, even though each crawl is capped at 100 URLs. For repeated audits across many properties, that is the broadest free operating room.
Frequently asked questions
Which alternative is closest if I only want a single remote scan like SiteCheck?
Test TLS is the closest for a simple remote check, though it focuses on TLS configuration rather than malware or blacklist status. If you want site crawling instead, Checkbot is the other browser-based option.
Which alternative is best if I need ongoing monitoring instead of a one-off scan?
IntoDNS.ai is the clearest monitoring choice because its free tier includes nightly domain monitoring, scan history, favorite domains, and email fix digests.
Which alternative has the biggest free crawling allowance?
Checkbot. Its free plan allows unlimited crawls and unlimited sites, with a 100-URL cap per crawl.
Which alternative is best for code security rather than website checking?
Coverity Scan, but only if you are working on a registered open source project and can fit within its weekly build submission limits.
Bottom line
For most builders who outgrow SiteCheck because they want broader free coverage, Checkbot is the best next stop. Its free plan lets you crawl unlimited sites as often as you want, which makes it the most flexible option for repeated audits. It still is not a malware-focused remote scanner, but for teams that mainly need to inspect many pages for security and best-practice issues, it offers the most practical free headroom without forcing an immediate upgrade.
Read the full listing for Sucuri SiteCheck. Scores use the FTV methodology at /ftv. Browse more alternatives on /alternatives, or head-to-head comparisons on /compare.