Free Developer Tools - VPS & Server Utilities Online

Collection of free online tools for developers and system administrators. SSL checker, DNS lookup, WHOIS, IP tools, PHP-FPM calculator, MySQL optimizer, and more.

Key Features

  • 13+ professional developer tools completely free
  • No registration required to browse tools
  • Email security tools (DMARC, SPF, Blacklist Checker)
  • Network diagnostics (DNS, WHOIS, Port Scanner, SSL)
  • Server configuration calculators (PHP-FPM, MySQL)
  • IP analysis tools (Geolocation, Reputation Check)
  • Server migration utilities (Htaccess to Nginx)

Use Cases

  • DevOps engineers optimizing server performance
  • System administrators managing VPS infrastructure
  • Web developers debugging domain and SSL issues
  • Email administrators improving deliverability
  • Security professionals conducting audits
  • IT teams migrating between web servers

Login Required

To use this tool, please login with your Google account. It's free and takes just a few seconds!

Login with Google

Developer Tools

Free online tools to help you with your development and system administration tasks.

More Tools Coming Soon

We're working on adding more useful tools for developers.

Login Required

Please login to access tool. All tools require authentication for security purposes.

Login with Google

By logging in, you agree to our Terms of Service and Privacy Policy.

Frequently Asked Questions

Are these developer tools really free to use?

Yes! All 13+ tools on VPSMetrics are completely free. Login is only required to access tool functionality for security purposes and to prevent abuse.

What types of tools are available?

We offer email security tools (DMARC, SPF, Blacklist Checker), network diagnostic tools (DNS Lookup, WHOIS, Port Scanner, SSL Checker), server configuration calculators (PHP-FPM, MySQL/MariaDB), IP analysis tools (What is My IP, IP Reputation), and server migration utilities (Htaccess to Nginx Converter).

Do I need to install anything to use these tools?

No installation required! All tools are web-based and work directly in your browser. Simply login with your Google account and start using any tool immediately.

Which tool should I use to check my SSL certificate?

Use our SSL Certificate Checker tool to validate SSL/TLS certificates, check expiration dates, view issuer information, analyze certificate chains, and get security recommendations for any domain.

How can I optimize my PHP-FPM configuration?

Our PHP-FPM Calculator generates optimal configurations based on your server RAM and application type. It calculates pm.max_children, spare servers, and includes presets for 18+ frameworks including WordPress, Laravel, and Magento.

Can I check if my IP is blacklisted?

Yes! Our Blacklist Checker tool scans your domain or IP against 28+ reputable DNS-based blacklists (DNSBL/RBL) to monitor email sender reputation and identify deliverability issues.

About Our Tools

All tools require login for security and accountability. We're committed to providing accurate and reliable results. Login with your Google account to get started!