GitHub

GitHub offers a comprehensive developer platform that includes many features aligning with the concept of a low-code/no-code internal tools platform, especially with its GitHub Actions for workflow automation, Codespaces for development environments, and Copilot for AI assistance. While not explicitly a 'low-code/no-code' platform in the same vein as Retool, it provides the underlying infrastructure and tools that enable rapid application development and automation, which are core to the Retool concept. The presence of API integrations, code customization, security features, and deployment options further strengthens the match.