Who is CTi Software?

Headquartered in Newmarket, Ontario, Canada, 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

SmartSlope joins Vespa2

  • November 26, 2018

We are happy to announce that SmartSlope has join the list of Blocks available in

Vespa2 is Here

  • September 1, 2018

New Vespa2 has all of the features of functionality of the original version, with some


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

Latest Newsletter

Sign-up for the CTi Newsletter and keep informed of exciting announcements

Your Name (required)


Your Email (required)

View Latest

Contact Us

Callide Technologies Inc.

10-480 Harry Walker Pkwy South
Newmarket, Ontario

e-mail: support@ctiware.com

E-mail Us

 Proud Partners

Risi Stone Retaining Wall Systems