Djongo is a Django database backend that enables using MongoDB as the database engine without modifying the Django ORM. It translates SQL queries (generated by Django's ORM) into MongoDB aggregation pipelines and commands, and provides custom model fields for embedded documents, arrays, and ObjectIds. The core is a SQL-to-MongoDB compiler implemented in the `sql2mongo/` package, which parses SQL tokens and maps them to MongoDB operators and stages. The repository also includes a commercial documentation site built with Angular and Jekyll, and references a paid cloud service (DjongoCS). The library is in alpha stage, with many features explicitly unsupported (indexes, transactions, schema validation, etc.) and pinned to very old versions of Django (≤3.1.12), pymongo (≤3.11.4), and sqlparse (0.2.4). The codebase shows signs of neglect: use of `print` for warnings, many `raise NotSupportedError` placeholders, and incomplete implementations. While the SQL-to-MongoDB translation logic is conceptually interesting, the overall package is not production-ready for modern Django/MongoDB stacks.