Muse is a free, open source JavaScript tool for reflecting on and searching for patterns in the past by examining one's personal e-mail archive. It analyses e-mail to generate several views including a sentiment graph from messages that may reflect particular emotions or feelings, inferred groups based on communications with various contacts, a calendar view, or an an attachment wall of all documents attached to e-mails.

NodeXL is a free, open source tool for generating and exploring network graphs from Microsoft Excel files. It is particularly suited to data from social media sources, and includes the ability to directly import data from Twitter, YouTube, Flickr and email, with additional plugins available for gathering data from Facebook, Microsoft Exchange, wikis and URLs. The tool generates visualizations that can be adjusted, zoomed and filtered, with additional features for vertex grouping, graphing metric calculations, and automating tasks. NodeXL can both import and export data in GraphML, Pajek, UCINet and matrix formats.

minezy is a prototype application for exploring and mining large email archives. Its interface is designed to make it easy to find the answers to common questions: who the message originator was, when messages were sent, how frequently, who was included in the exchange, and the subject and content. The app interface is designed around search, filters and a series of panels that open to the right when results and sub-results are clicked on. The prototype can be tried out via the minezy website, and is pre-loaded with the Enron collection of emails for exploration.