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).
Home of Scimore Distributed SQL database and Scimore Embedded SQL database. Both supports SQL, ACID for both DDL&DML, advanced query prioritization and multiversioning concurrency protocol, so read transactions never blocks.
Vertica is a grid-based, column-oriented database designed to manage large, fast-growing volumes of data and provide very fast query performance when used for data warehouses and other query-intensive applications.
MaxDB is an ANSI SQL-92 (entry level) compliant relational database management system (RDBMS) from SAP AG, which was delivered also by MySQL AB from 2003 to 2007. MaxDB is targeted for large SAP environments e.g.
Mini SQL, or mSQL, is a lightweight database engine designed to provide fast access to stored data with low memory requirements. As its name implies, mSQL offers a subset of SQL as its query interface.