Robei

Robei aims to simplify FPGA design procedure and let everyone to play with FPGA. It introduced a brand new visual design method for fast prototyping by combining advatanges from both graphical design and coding. Each of your design can be considered as conceptual chip inside FPGA, and can be reused at any time.

*Robei is very user friendly and easy to learn. First time users can easily manage it in fifteen minutes.
*Robei provides code generation on structural level, which can reduce coding mistakes and increase productivity. In addition to that, Robei also provides an integrated code editor for verilog coding directly. This feature opens the door for complex design.
*Robei is cross platform. It works on Windows, Linux, Mac OS and Android. It is also the first FPGA simulation tool that can work on embedded platforms. You can design at anywhere with Robei.
*Robei is the world smallest EDA tool for FPGA design and simulation. It has only 4.5 Mbits.
*Robei’s waveform viewer is small, efficient, modern and user friendly. For example, different colors are used to differentiate waves near to each other.

There are so many new features going on, why not try it for yourself for free.