NekoHTML is a simple HTML scanner and tag balancer that enables application programmers to parse HTML documents and access the information using standard XML interfaces.
Simple user login management in php with sessions.
Simple user login management with sessions. User registers with email address as user name and receives verification email. Basic admin interface, "forgot password" feature, customizable user data fields, login attempt limitation, etc.
Checks given webpages for backlinks and scans for image links and keywords.
Uses DOM-based methods to scan for backlinks, which are more sophisticated than simple text scanning (one example: they ignore commented out source code).