Chef
Ansible
Jenkins
Puppet Enterprise
Travis CI
CircleCI
Codeship
Salt
DraftSight
LibreCAD
SketchUp
FreeCAD
Autodesk AutoCAD
BricsCAD
nanoCAD
QCAD
ChefAnsible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
SketchUp - 3D for Everyone
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.
FreeCAD - An open-source parametric 3D modeler