Digital Transformation at the Heart of Callista’s Strategy
Callista is a software company based in Kalmthout with over 13 years of experience in digitizing and optimizing business processes. We focus specifically on construction, installation, and manufacturing companies in Belgium and the Netherlands—sectors that often face complex workflows, manual administration, limited software integration, and fragmented data.

Our Strength?
Standardized software solutions based on Odoo, perfectly tailored to the needs of the sector and the way our clients work. We bring structure, clarity, and efficiency—with a solid technical foundation and a strong focus on user-friendliness.

At Callista, we translate complex business realities into clear, smart, and scalable software solutions. Our solutions deliver:
- Better control and visibility
- Less manual work
- Optimized collaboration with suppliers, customers, and teams
- Time and cost savings in daily operations

Built on the Power of Odoo
We build on the strength of Odoo—a modular, user-friendly, and scalable platform—but go far beyond the standard. Together with our clients, we analyze processes, identify bottlenecks, and create one integrated system that brings everything together: from planning, purchasing, and inventory management to invoicing, project tracking, CRM, and HR.

Our Approach
Personal: A dedicated team of around 30 people, with one consistent point of contact.
Strategic: We act as a strategic partner, thinking beyond software to offer advice aligned with your business approach.
Efficient: Short lead times and low maintenance costs.
Industry-Focused: Proven solutions for construction, installation, and manufacturing.