If you need an open source cost control software for your projects then Rapid Busines Information Organizer or Rabio could help you.
Best Open Source Cost Control Software
Cost Control with Cost Breakdown Structure
Do Cost Control using Rabio with the flexible Cost Breakdown Structure (CBS) of cost centers, cost categories, and the addition of tags.
Manage your Cost Control operations using Rabio data structure and flexible reporting system.
Easy Project Management
When it comes to data processing for project management, the flexible structure of Rabio can easily integrate with various data sources, manipulate data and produce accurate reports.
Rabio is open source and it is distributed for free under the GPLv3 license.
Check Rabio using the online demo, available 24/7.