Question: I'm looking for an open-source solution that provides full control and ownership of the code, with customizable and extensible features.

If you're looking for an open-source solution that gives you full control and ownership of the code, with extensibility and customization capabilities, Amplication is a good choice. The platform uses AI generation to create production-ready backends in minutes, with full-featured GraphQL and REST APIs, role-based access control, microservices support, and continuous Git sync. Amplication also has a plugin system, supports monorepo and polyrepo structures, and has data security and privacy with its SOC-2 certification.

Another good option is Tabnine, an AI-powered code assistant that speeds up and simplifies software development while keeping code private and secure. It generates personalized suggestions based on user code and patterns, supports many programming languages and IDEs, and can be installed on-premises or behind a secure SaaS interface. Tabnine is highly customizable, allowing users to train custom models on their own codebase, making it good for both individual developers and large enterprise teams.

If you want a full code intelligence platform, check out Sourcegraph. The tool helps developers work more efficiently with features like AI-powered coding assistance, cross-repository code navigation, fast and accurate code search, and large-scale code changes automation. Sourcegraph supports multiple programming languages and code hosts, integrates with popular IDEs, and can be self-hosted or deployed in the cloud, making it a good fit for whatever development environment you have.

Last, CodeComplete is a self-hosted, AI-powered coding assistant geared for enterprise needs. It can generate code, run automated unit tests, generate documentation, refactor code and migrate code, with a strong focus on code and data protection through self-hosted options. CodeComplete also offers detailed analytics and customized pricing plans for individuals and enterprises.