What tools or options do I have so that I can edit or tamper with Wireshark/tcpdump captures in any way which I want- be it IP headers, TCP layer, the payload part or raw packets? I have looked at [Scapy](https://www.secdev.org/projects/scapy/) and [libcrafter](http://code.google.com/p/libcrafter/). [Netdude](http://netdude.sourceforge.net/) is great as well, but the project is not maintained by the author.

What better options are there?