Titan Database is described as 'Titan is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster' and is an app in the Development category. There are more than 50 alternatives to Titan Database for a variety of platforms, including Linux, Windows, Mac, Online / Web-based and BSD. The best alternative is DBeaver, which is both free and Open Source. Other great apps like Titan Database are PostgreSQL (Free, Open Source), SQLite (Free, Open Source), MongoDB (Free) and MySQL Community Edition (Free, Open Source).
Open Sqlite databases and explore the internal organisation of various objects such as schema, tables and indices. To understand how Sqlite3 data is organised, please see [Database file format](https://www.sqlite.org/fileformat.html) from Sqlite website.