LAN messenger with IRC functions
Taking advantage of the fact that most office and home networks operate without centralized administration, the developers made Vypress Chat with these networks in mind. It is fully configurable, works with both TCP/IP and IPX/SPX network protocols and doesn’t depend on a dedicated server.
If you're a beginner to network administration, the best thing you'll find with Vypress Chat is that it requires no post-setup steps to get up and running. It offers an online user list - basically a list of people who have Vypress Chat running in your office network - and displays their status like most IM's i.e. “I’m busy”, “Out of office”, “On the phone”, etc.
A nice feature for those that need to keep track of conversations is that they can be logged into a XML file for recall at a later date - great for keeping a record of confidential or important conversations. The main concern with this app is security breaches however - it's debatable how secure it really is although the developers claim that because no data is sent outside your office, it's totally secure.