General
A visual diff tool to compare text and code
Remove bloat and unnecessary markup from SVGs
An epoch/unix timestamp converter
Network
Domain name system lookup
Domain name system propagation checker
Lookup details about an IP address
Whois domain name & IP lookup
Programming
Create types for Rust, Kotlin, TS and JSON schema
A visualizer for JSON
Syntax checker for JS, TS, JSON, CSS and HTML
Test websocket connection and send/receive data
Security
Search for compromised accounts
Check if your password has been leaked
Create secure passwords
Website
See the global/browser support for a feature
See when domains expire
View SSL certificate details
Identify technology on websites