Free DevOps Tools
23 free tools for speed tests, calculators, checklists, SSL certificates, email deliverability, and infrastructure assessments. No signup required.
Before you run one
What these tools do, and where they stop
They are free and they are honest about their limits, which is the only way a free tool is worth anything.
They measure from outside
What a visitor's browser sees, what a public endpoint returns. That catches a great deal and it will never see a slow query or a saturated disk, because neither is visible from the internet.
They tell you where to look, not what to do
A result narrows the search. Turning it into a change that is safe on a live system is the part that needs someone who knows what else runs on that box.
What a run records, and for how long
A run keeps what you entered, the result and your IP address for ninety days, then deletes it automatically. That is how we catch abuse and find a tool that is answering wrongly. No account is needed and none is offered.
A red result is not always urgent
Some findings matter on a checkout page and not at all on a documentation site. Where a tool gives you a score, treat it as a starting point rather than a verdict, because it cannot know what the system is for.
A result you want read properly? Send it over with what the system actually does.
Send a resultSpeed Tests & Scanners
7 tools
Test your website speed, server performance, and security headers. Get a detailed report with actionable recommendations instantly.
Calculators & Estimators
4 tools
Work out the monthly support hours your estate needs, what an hour of your own downtime costs, and the recovery targets to plan against.
Assessments & Planners
4 tools
Score your infrastructure readiness, plan cloud migrations, and identify gaps before they become production incidents.
SSL Certificate Tools
4 tools
Check SSL certificates, decode CSRs, verify certificate-key pairs. Essential tools for server administrators and DevOps engineers.
Email & Deliverability Tools
2 tools
Check email blacklists, validate SPF/DKIM/DMARC records, and score your domain deliverability configuration.
DNS Tools
2 tools
Look up DNS records, check reverse DNS (PTR), and diagnose domain name resolution issues. Essential for server and email troubleshooting.
Speed Tests & Scanners
7 tools
Free Website Speed Test
Enter any URL to measure server response time, TTFB, page size, and compression. Instant results, no signup required.
Free WordPress Speed & Security Test
Deep scan for WordPress sites - server speed, caching plugin detection, REST API exposure, XML-RPC, login page security, theme, and WooCommerce detection.
Free Magento Performance & Cache Test
Deep scan for Magento stores - Full Page Cache status, Varnish detection, admin panel exposure, REST API security, CSS/JS merge, and theme analysis.
Free Website Security Scanner
Scan your website for security headers, SSL configuration, and common vulnerabilities. Instant security grade.
Free Server Performance Test
Full server health check - response time, TTFB, page weight, compression, SSL grade, security headers, and HTTP version. Similar to Pingdom but free.
Free Plesk Server Scanner
Deep scan for Plesk servers - panel detection on port 8443, Plesk version, web server type, PHP version, webmail, WAF/ModSecurity status, and performance metrics.
Free cPanel Server Scanner
Deep scan for cPanel servers - panel on port 2083, WHM access, cPanel version, webmail, PHP version, web server type, ModSecurity, and AutoSSL status.
Calculators & Estimators
4 tools
Free Cloud Cost Work Hours Estimator
Four questions about your cloud estate, and a range of support hours a month the cost work would take. Our hours, not your bill and not a saving we cannot know.
Free DevOps Hours Estimator
Four questions about your infrastructure, answered from memory, and a range of support hours a month it would take to run. Hours, not prices.
Free Downtime Cost Calculator
Calculate how much downtime is really costing your business. See the impact of proactive monitoring.
Free Disaster Recovery Calculator
Estimate how long it would take to recover your system after a failure, and how much data you could lose. Based on your backup strategy.
Assessments & Planners
4 tools
Free Cloud Migration Size Estimator
Three questions about what is moving, and a range of engineer hours for the whole move. Project hours, not a monthly package and not a price.
Free Cloud Support Hours Estimator
Four questions about your cloud estate, answered from memory, and a range of support hours a month it would take to run. Hours, not your cloud bill.
Free AWS Support Hours Estimator
Four questions about your AWS estate, answered from memory, and a range of support hours a month it would take us to run it. Hours, not your AWS bill.
Free Monitoring Readiness Assessment
Check how well your infrastructure is monitored. Answer 8 quick questions to find blind spots.
SSL Certificate Tools
4 tools
Free SSL Certificate Checker
Check any domain's SSL certificate - expiry date, certificate chain, trust status, SANs, and cipher details. Instant results.
Free CSR Decoder
Paste your Certificate Signing Request (CSR) to decode and verify its contents - Common Name, Organization, Key Size, and more.
Free SSL Certificate Decoder
Paste an SSL certificate in PEM format to decode its details - subject, issuer, validity dates, SANs, key info, and fingerprints.
Free Certificate Key Matcher
Verify that an SSL certificate and private key are a matching pair. Paste both to check compatibility before installation.
Email & Deliverability Tools
2 tools
Free Email Configuration Checker
Check your domain's email setup - MX records, SPF, DKIM, DMARC, MTA-STS, BIMI, and reverse DNS. Get a mail deliverability score with actionable recommendations.
Free Email Blacklist Checker
Check if your domain or IP is blacklisted on 25+ major email blacklists (DNSBL). Instant results with clear listed/clean/timeout status.
DNS Tools
2 tools
Free DNS Record Lookup
Look up all DNS records for any domain - A, AAAA, MX, TXT, NS, CNAME, and SOA records. Detect DNS provider and view TTL values.
Free Reverse DNS (PTR) Lookup
Check reverse DNS (PTR) records for any IP address or domain. Verify that your mail server IP has proper PTR configuration for email deliverability.
Need More Than a Free Tool?
Our team of senior DevOps engineers can perform a comprehensive analysis and implement the fixes for you.