Apache AGE (Approximate Graph Engine) and AgensGraph are both systems for working with graph data, but they have some key differences:

• AGE is a graph processing and analytics system for relational databases (RDBs), while AgensGraph is a multi-model database that combines a graph database with a SQL database. This means that AGE is designed to work with data stored in an RDB, while AgensGraph can store data in both graph and relational formats.

• AGE uses SQL-based queries to perform graph operations, while AgensGraph uses a combination of SQL and its own query language, called GSQL, for working with graph data.

• AGE is implemented in Java, while AgensGraph is implemented in C.

• AGE is part of the Apache Software Foundation, while AgensGraph is a product of Bitnine Global Inc.

Overall, the choice between AGE and AgensGraph will depend on your specific needs and requirements. If you are working with data stored in an RDB and are familiar with SQL, AGE may be a good fit. On the other hand, if you need a multi-model database that combines a graph database with a SQL database and has its own query language, AgensGraph may be a better choice.