Most online invoicing sites are expensive. They shouldn’t be. The aim of Invoice Ninja is to provide a free, open-source alternative for invoicing. Additionally, the hope is this codebase will serve as a sample site for Laravel as well as other JavaScript technologies.
Invoicing with no monthly fee. Free, now and forever! Quality invoicing to build your business and get paid. Create beautiful email-ready. PDF invoices created instantly as you type. The ‘Save & send’ feature saves you time and impresses clients. PayPal? Authorize.Net? Stripe? They support many payment technologies.

Demo: https://github.com/hillelcoren/invoice-ninja
License: License Free

A set of simple stack effects for inspiration. The main idea is to have one item shown initially and then, on some trigger, more items are revealed as decoration. As seen in image grids or on scroll websites as creative effect.

StackEffects

VIEW DEMO DOWNLOAD SOURCE

The Pattern Library is an on going project compiles patterns shared by the most talented designers out there for you to use freely in your designs. I really like the design of the site, which is user-friendly and responsive. You can pick your favorite pattern easily to download as you wish.
pattern-library

Read more at http://www.webappers.com/2014/01/20/the-pattern-library-by-the-most-talented-designers/#2zJRdbSrzZcLGIxz.99

If you are familiar with Windows 8 or Pinterest, you know of the dynamic grid layout. A dynamic grid is a layout where you can rearrange and reposition child elements as required or when you have your browser resized. A popular jQuery plugin used to create this layout is jQuery Masonry but if you want more options and even animation, check out FreeWall.

FreeWall is a free jQuery plugin from Minh Nguyen which you can use to create many grid layout types: flexible layout, metro style layout, nested grids, image layout and fluid grid. It also has support for responsive design so you can display your site in desktop, mobile or tablet.