The Advanced Packet Editor (APE) is an open-source project for a TCP and HTTP-based proxy that allows you to intercept and manipulate communication between clients and servers.

We at AppSec Labs have taken the project, modified and improved it into a useful tool for application penetration testing.

This tool is under the GPL license (for more information: http://www.gnu.org/licenses/gpl-3.0.en.html)
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