XStudio is a modular and open ALM solution allowing to manage the complete life-cycle of your products.
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Pros

Pro Free community edition available
XStudio has a free comunity edition available for up to 4 users and 200 tests.
Pro Can interface with any automation framework, even proprietary
XQual provides more than 50 drivers to interface with all the automation tools in the market but also an SDK that gives the ability to develop ones own if they have a proprietary framework for instance.
Pro Nice design
The GUI is really nice and easy to use for a such complete product. Usually, when you have all those features (ability to drive automated tests, parametrization etc.) this becomes quickly messy. No problem here... it's very clean and nicely designed.
Cons
Con Supports only one way integrations
Integrations with external systems (for example Jira) are only one-way. This means that while you can submit bugs which will be tracked by Jira, changes in Jira itself are not fed back to XStudio.
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