Tool Spotlight
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
Validate email addresses in bulk with advanced deliverability checks. Our tool verifies syntax, MX records, SMTP validity, and identifies disposable or role-based accounts. Free for up to 5 emails per validation. After validating your email lists, ensure optimal deliverability by configuring SPF records and DMARC policies. Monitor your sender reputation with our Blacklist Checker and optimize your campaigns with our Email Warmup Schedule Generator.
Developer Tools for Faster Ops & Smarter Deploys
Ready-to-use utilities to troubleshoot, optimize, and monitor your infrastructure. Benchmark VPS performance, compare hosting providers, or explore our performance dashboard without leaving your browser.
Explore Our Tool Categories
Grouped by workflow so you can jump straight to the utility you need.
Email Security
Validate sender reputation
Network Diagnostics
Inspect DNS & SSL in seconds
Server Optimization
Tune services for peak throughput
Security Automation
Defend before incidents strike
More Tools Coming Soon
We're working on adding more useful tools for developers.
Frequently Asked Questions
Need more details? Check our quick answers below.
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. Check our VPS benchmarks for performance data or explore provider comparisons.
What types of tools are available?
We offer email security tools (DMARC, SPF, Blacklist Checker), network diagnostic tools (DNS Lookup, WHOIS, SSL Checker), server configuration calculators (PHP-FPM, MySQL/MariaDB), and more.
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. Learn more about us.
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. View benchmark results to compare server performance.
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. Need more server insights? Check our performance dashboard.
About Our Tools
All tools require login for security and accountability. We keep results accurate and up to date. Explore our VPS benchmarks, compare providers with provider reviews, and sign in with Google to download reports or save presets.
Related Resources
Extend your workflow with these VPS Metrics guides.
