Gentelella is a free to use Bootstrap admin template developed and maintained by Colorlib and Aigars Silkalns integrated into Symfony web application framework.
Live preview is installed on Heroku.
If you're going to use this template then read more on Wiki.
The MIT License - Copyright (c) 2016 Krzysztof Piasecki
Gentelella - Admin template developed and maintained by Colorlib and Aigars Silkalns