Best Free Application Modernization Software of 2026

Kissflow is an easy-to-use, low-code platform for custom application development tailored to business operations. Kissflow empowers process owners and IT developers to automate and build processes and applications for internal business operations.

OutSystems stands out as the leading low-code platform tailored to assist users in creating and deploying superior applications more efficiently. By merging the efficiency of low-code development with robust mobile and enterprise integration features, OutSystems empowers users to visually design and oversee their complete application portfolio, coordinate interconnected applications and components, integrate smoothly with current systems, and enhance DevOps workflows. This holistic approach significantly accelerates the app development lifecycle, ensuring that businesses can respond swiftly to changing market demands.

Mendix, a Siemens company and global leader in enterprise low code, is fundamentally changing the way applications are delivered in a digital enterprise. The Mendix platform allows enterprises to 'Make with More' by increasing their development capabilities to overcome the software development bottleneck. 'Make it Smart' by creating apps with rich native experiences that can be intelligent, proactive and contextual. 'Make at Scale' is a way to modernize core systems and create large app portfolios. Mendix is designed to encourage intense collaboration between IT and business teams. It dramatically accelerates application development cycles while maintaining the highest quality, security, and governance. In short, it helps enterprises leap into their digital future. More than 4,000 top companies have adopted the Mendix platform, including Conoco Phillips and Business Development Bank of Canada. Post NL, Continental, Zurich Insurance and more.