I've been having to deal with a lot of testing tools lately for testing tasks that should/must be automated. These include things like performance/load testing, webservice testing, vulnerability scanning, etc.
After experimenting with both the open source and paid types of tools out there, as well as they may work, do not seem to lend themselves to modification to make the work of the individual tester/team easier/make more sense for them.
Does anyone have any experience in building any of these tools yourselves in house? If so, was the pay off worth it? Many of us are willing to work in our off-work hours in exchange for making our work easier/less of a hassle. I can see this being of use in some specific circumstances, such as load testing and web service testing as it would be easier to tie into internal resources.