About
We’re Calleo Software, and we sell best-of-breed software testing tools that help you deliver faster, more consistently, and more effectively.
Calleo was formed in 2016. Since then, we have helped our customers find the right testing solutions to deliver immediate and long-term success. Calleo (pronounced cah-LAY-oh) comes from the Latin verb, meaning to be skilful or wise by experience. Or, as we say it, ‘wisdom through knowledge’, which embodies our philosophy.
We don’t just sell tools; we work with you and share our experience to ensure you get the right software testing solutions. Our typical customers are testing professionals in finance, retail, manufacturing, and software development. However, we have helped customers in many other sectors.
Why Choose Calleo?
- Expertise: With over 30 years in IT, our founder, Stephen Davis, brings insight and experience to your testing challenges.
- Innovation: We provide best-in-class solutions with the latest technologies like AI and machine learning.
- Scope: Our tools tackle everything from web, mobile and API technologies to legacy systems.
- Partnership: As an OpenText Gold Partner, we’re committed to your success before, during and after your purchase.
The OpenText Test Tool Suite
This class-leading set of test tools started life as the Mercury Interactive test tools, which, through acquisition, became part of HP and then Micro Focus. Now, the baton has been passed to OpenText, and they are firmly established as the OpenText test tool suites.
With OpenText tools, you can test the widest range of applications, including the latest web and mobile technologies, API, ERP/CRM applications and most legacy systems.
We are a specialist OpenText partner, and our team has over 25 years of experience with these tools.
The Calleo Toolbox
Calleo can equip your team with top-tier OpenText solutions for:
- Test Management
- Functional Testing
- Performance Testing
- Service Virtualisation
- Value Stream Management (VSM)
Are you ready to transform your testing process? Let’s get you tooled up for success.

