Who is CTi Software?
Headquartered in Woodstock, GA, CTi Software is a privately held company that specializes in the development of software tools for the Civil, Geotechnical and Structural Design Communities.
Our first product, the VESPA MSE Design Software package was launched at the 2010 AASHTO Annual Meeting in Detroit, Michigan. Since this time, the Vespa User Community has grown, and development of Vespa Design Software has grown along with it. We have listened to the great feedback, comments, and suggestions from the Designers who have adopted Vespa and use it regularly in their Design Practice. We have incorporated many new ideas, time saving features, and improvements into Vespa and have created the leading “open” MSE Design software in the industry.
Our valued Partners in the industry, which include most of the major SRW Block Licensors and Geosynthetic Manufacturers have also been instrumental in helping us build the Vespa platform into the industry standard, and we look forward to continuing to develop these relationships.
Vespa (Vertical Earth Solutions – Professional Analysis) was developed out of a need to supply the industry with a product that does not tie the user to one specific Block, Grid, or Design Methodology, and therefore create a standardized platform that Designers in the industry can feel confident using. Vespa was created by a team of Designers, Programmers and Beta Testers with over 35 years of combined experience in the Design of MSE Walls, Slopes and other Geotechnical Structures.
At CTi, our long term goal is to continue to develop and evolve the Vespa and Awall products, and create other new, related Tools for the Design Communities we service. Ultimately, we want Designers to feel confident that their investment in a CTi Software tool will be a profitable decision.
Recent Company News
We’re excited to share that CTi Software is now Collide Technologies, LLC.
Our primary goal with this transition is to enhance and improve CTi, making it an even more valuable tool for your business. We’re committed to investing in updates and innovations that align with your needs and help you succeed.
Here’s what you can expect:
- Improved Features and Functionality: We’re exploring ways to make CTi Software more innovative and efficient. Your feedback will play a key role in shaping these enhancements—we want to build the tools and features that matter most to you.
- Continued Service and Support: You’ll continue to have uninterrupted access to CTi Software and receive the reliable support you’ve come to expect.
- Data Security and Confidentiality: Protecting your data and maintaining your trust are top priorities. All customer information, projects, and data will remain secure and confidential.
- Collaborative Growth: We believe CTi Software has tremendous potential, and our aim is to unlock that potential by working with you to identify opportunities for growth and improvement.
Thank you for your trust and continued partnership. We’re excited about this new chapter and look forward to growing with you!

Testimonial
None of the programs on the market today bridge the gap between the civil grading plans, the wall design program, the wall shop drawings and final wall quantities like AWALL and VESPA.Chad Clark, P.E., Clark Geotechnical
Vespa has it all; a user friendly retaining wall drawing component, an accurate analysis package & concise reporting tailored to your needs.Michael Bernardi, P.E., REDI Engineering

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Contact Us
Callide Technologies, LLC
231 Rope Mill Pkwy
Woodstock, GA 30188
e-mail: support@ctiware.com
E-mail UsProud Partners
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