Free online network diagnostics and developer tools for engineers and IT professionals
Free MCP connector for Claude to access Spacemail email
Stage
Not given
Not given
Founded
Not given
Not given
Based in
BD
GB
Pricing model
Free
Open source
Pricing
Web Utility Suite: Free forever with complete access to all web-based diagnostic tools via browser, unlimited queries, no registration required. Programmatic API: Coming Soon.
Free
Key features
IP Lookup with geolocation, ISP, and ASN detection
DNS Lookup and query of multiple record types (A, AAAA, MX, CNAME, TXT, NS, SOA, CAA, PTR)
Subnet Calculator for IPv4 CIDR blocks and network calculations
Port Checker for TCP port connectivity testing
SSL Certificate Checker with expiration and TLS protocol verification
WHOIS Lookup for domain registration details
JSON Formatter and Validator with tree view and syntax error detection
Base64 Encoder and Decoder with file and image support
cURL to Code Converter supporting 7 programming languages
UUID v4 and UUID v7 generator with RFC 9562 compliance
Check new mail across all mailboxes with message previews
Search emails by sender, subject, words or date
Read full email messages with attachment names
Draft threaded replies and new emails saved to Drafts
Mark messages as read or unread and flag important ones
Archive, move or delete messages to Trash
Works with Claude Desktop, Claude Code, Cursor and Windsurf
Support for up to three mailboxes
Drafts saved for manual review before sending
Data stays on your computer, not collected by Norwich Website Design
What makes it different
100% free with no account, email, or payment required
Native Node.js execution for sub-second response times without queue delays
Privacy-focused with zero query logging and strict SSRF security filters
28 tools in one place covering both network diagnostics and developer utilities
All tools run in browser with no software installation or configuration required
Free and open-source under MIT licence
Email content marked as untrusted to prevent phishing attacks
Deleted messages go to Trash, not permanently deleted
Independent project not affiliated with Spaceship or Spacemail
Spacemail for Claude