In 2015, the software company Qosqo who supported the development of Quipu decided to abandon the open source project as it was. The latest open source release (version 2.x) is what you'll find here. The development moved on in closed source at http://www.datawarehousemanagement.org, currently (March 2016) at version 3.2.
The open source description:
Quipu is an open source data warehouse generation system that creates and monitors data warehouses. With Quipu you can implement a data...
Snowflake is a CASE Tool directed towards data warehousing projects. Through an easy to use graphical interface, it allows the construction of a conceptual design of the data warehouse or data mart, using a simple multidimensional notation.
BUsiness Layer's Library for .nET Software, is a class library that encapsulates many of the common small business tasks like management of sales, users, clients, providers, products (and its categories), services, deploying, reservations, etc.