Softura

Thoughtworks pioneered many of the patterns used in modern software development, including the "Strangler Fig" pattern for legacy modernization. They are the premium choice for complex, strategic re-architecting where code quality and domain alignment are paramount.

Feathersoft provides specialized legacy migration services, with a strong focus on Visual Basic 6 (VB6) to .NET transformations. They offer cost-effective migration factories and dedicated teams to handle the tedious work of upgrading legacy desktop applications.

Fresche provides modernization, cloud, application-managed, and data services for IBM i and Microsoft systems. Its public materials describe AI-powered code and application modernization, custom web application development, database modernization, and ongoing application support.