Question: I need a solution that lets me customize and control my web app's source code, do you know of any?

If you're looking for a way to customize and control the source code of your web app, Amplication could be a good choice. This open-source foundation is designed for .NET and Node.js, with support for GraphQL and REST APIs, microservices architecture and continuous Git synchronization. It gives you full control over source code and a plugin system for customizing it, plus an automatically generated React Admin UI for data models. Amplication also protects your data with SOC-2 certification.

Another option is Replit. This cloud-based service lets developers write, share and deploy software without any setup or downloads. It's got AI code generation, code completion and deployment options, and it's designed to be easy to manage and secure source code. Replit also has collaboration tools and supports multiple programming languages, so it can be used by solo developers and teams.

If you're looking for a more specialized tool to boost code intelligence, Sourcegraph has a variety of tools to improve productivity, including an AI-powered coding assistant, Code Search and Batch Changes. It supports multiple programming languages and integrates with popular IDEs. Sourcegraph helps developers understand and navigate large codebases better, an important part of maintaining and improving complex software.

Last, RunCode offers a cloud-based development environment where you can write high-performance, fully customized code right in your browser. It's got features like real-time workspace sharing, generative AI-powered code completion and secure environments. RunCode is geared for developers and teams that need a flexible and collaborative cloud environment for multiple coding projects.