1 - BonFire
Bonfire provides a Bootstrap-powered admin area ready for you to move your code into. Easily re-theme it, and integrate admin areas automatically within your own modules.
you can Easily create backups of your databases. Simple restores of old database backups. Browse the raw database tables. Run all of your app's migrations. All from within Bonfire.
Bonfire also provides basic user management including user registration, banning, forgotten passwords, even public-facing user profile editing and simple custom fields.
2 - Fuel CMS
FUEL CMS is built upon the popular PHP web framework CodeIgniter and plays nicely with your existing installations.Content editors love FUEL CMS for its good looks and charm. Developers love it for being open and thoughtful.
FUEL CMS is hosted on GitHub and is totally free to download and use.it hasAn intuitive design means almost no learning curve for managing your site. Fuel CMS Creates SEO friendly page content in any language you want .
3 - Grocery CRUD
Grocery CRUD is an open source library that makes a developer's life easier. Few simple lines of code and you can create a full stable CRUD with nice views. A completely automatic system that even a newbie in PHP can work with!
The code to create a full CRUD is simple and the result is simple and at the same time very powerful. The simple UI needs almost zero documentation for your client to understand how things works. Grocery CRUD support all major browsers, Chrome, Safari, Firefox, Opera, and yes, even Internet Explorer!
4 - ClassRoom Booking System
Class room booking system is an Open source hassle-free room booking system for schools. Make better use of your ICT rooms by replacing your paper-based staff room booking sheets with a web application accessible from anywhere.
Due to the web-based nature, the only requirement for access is a web browser. The server just needs PHP and MySQL. The system interface makes all information available at a glance, and makes it easy to see which rooms are available . you can No limits Add as many rooms and users as you like, there are no limits imposed.
5 - Cronco
Crono is a Time Tracker and project manager written in Php with Codeigniter framework. Frontend is developed in jQuery and designed with Bootstrap.