Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
4D - 4D is a relational database management system and IDE.
VOGSY - Professional service automation tool built on Google G Suite
LiveCode Platform - It is Both Under the GPL and it is also Proprietary if using the GPL version the software you make...
Office Timesheets - Professional Services Automation
ESM Tools - ESM Tools is a powerful and widely known software development platform that comes with a centralized model infrastructure, providing the common frame for compiling, running, downloading, and organizing models (ones or multiple).