Quality is delighting customers
Automation test tools are "domain-agnostic" so you can use/re-use the same toolchain as for banking, e-commerce, CMS, CRM, etc. domains.
If you still need more details, being huge open-source software fan I can outline the following tools:
The choice of this or that tool should be made basing on tools capabilities, team skills set, learning curve, possibility of integration with Continuous Delivery lifecycle, etc. check out Open Source Load Testing Tools: Which One Should You Use? guide for example testing tools evaluation and comparison.