Althea is an IMAP email client for X that uses the GTK widget set. It was built with the IMAP protocol in mind in order to avoid many of the pitfalls experienced by POP clients that added IMAP support. Althea allows easy access to a nearly unlimited number of servers, and has a very small memory footprint. As of version 0.5.0 Althea also supports IMAP over SSL.
L7-filter is a packet classifier for Netfilter that identifies packets based on application layer (OSI layer 7) data. This means that it is able to classify packets as HTTP, FTP, Gnucleus, Kazaa, etc., regardless of ports. It complements existing matches that classify based on port numbers, packet length, TOS bits, and so on. Combined with Linux QoS, it allows for full layer 7 packet shaping.
Knight's Mail is a Web mail application that uses XUL to render the client display. Its goal is to look and feel as close to Mozilla Thunderbird as possible, while maintaining the positive qualities of a Web mail client such as keeping settings on the server and only requiring a (Mozilla-based) browser to be installed on the client.
> That's a rather odd thing for a user
> program which does not access any low
> level functions to do. Could you
> provide some additional information,
> such as your kernel version, X version,
> what you were doing when it froze and if
> the problem was reproducable? If you
> are running a new kernel and the problem
> persists, sending a log of the panic (if
> there is one) to the kernel hackers may
> be in order.
I have actually seen things somewhat similar to what is described above. it doesn't in fact crash X. What it does, when the GTK application is blocking (for network traffic,) is that all of X stops listening to input. (including trying to kill X using [ctrl][alt][backspace]) If you were trying to use althea over a modem link (I don't think I have ever done that) that might result in a very long pause... However, a user app shouldn't be able to do that... so I think perhaps the X-free people should be informed, as it could be used as a denial of service type attack... or perhaps more....