RTflow is a software tool for real-time systems that offers graphical modelling, simulation and immediate code generation. It's lightweight and free, making it easily accessible for developers.

One of the key features of RTflow is its simulator, which generates visual representations of every variable in the model. With this feature, users can easily identify and rectify bugs in the system. The debugging process is further made easier by the tool's ability to spot the causes of these bugs.
Finally, RTflow allows users to generate software codes and immediately implement on their target system. The software output is compatible with several programming languages, including C, C++, and Java. For hardware implementation, VHDL code generation is supported. Thus, users can carry out their modelling and implementation needs with ease, thanks to the RTflow modelling tool.
Version 1.1.1: Improved schematic editor; Simulator graphs can be printed and exported as CSV; Numerous bug fixes.