## Appendix H. External Projects**Table of Contents**[H.1. Client Interfaces](external-interfaces.html)[H.2. Administration Tools](external-admin-tools.html)[H.3. Procedural Languages](external-pl.html)[H.4. Extensions](external-extensions.html)PostgreSQL is a complex software project, and managing the project is difficult. We have found that many enhancements to PostgreSQL can be more efficiently developed separately from the core project.
