LogPrism is a free GPL licensed, multi-platform log file colorizer for Apache access log files. Highlights user sessions, error status codes, external referrers and traffic from search engine spiders. Supports console type ANSI colors and output to HTML files. LogPrism can be configured to ignore log entries, resolve numeric IP addresses into symbolic host names and show the register (RIPE, ARIN, etc.) of unresolvable IP addresses.