glTail app for iPhone and iPad

Visualize what happens in your Apache/Nginx/Ruby on Rails logfiles, in real time.

Each circle represents a request to a resource on your web server, and the size of the circle represents its size or speed depending on active parsers.

glTail requires password-based SSH access to the servers containing the logfiles you want to view. The Apache/Nginx logfiles must be in expanded common log format (often called combined, it includes User-Agent and Referrer in addition to the normal values), while Ruby on Rails must be a production log from version 2.2+.