Check whether a username is registered across major platforms and social networks.
Username availability and presence checker. Generates direct profile URLs for major platforms and opens them for manual verification. No automated status check to avoid false positives.
Constructs profile URLs for platforms with predictable URL schemes (GitHub: github.com/[user], Twitter: twitter.com/[user], Instagram: instagram.com/[user], Reddit: reddit.com/u/[user], etc.). Opens links in new tabs for manual verification. Automated HTTP-based checking is intentionally avoided: platforms return 200 for private profiles and 404 for missing ones inconsistently, making programmatic results unreliable without API keys.
These are constructed URL guesses. Most will return a 404 or empty profile until you manually verify the account exists. Use only for lawful, authorized research.