Digital Signal Processing Block Diagram Compiler - user extendable to all DSP's, but presently supports only the TI C2000 family. Rich support for fixed point arithmetic, both saturated and unsaturated. Block diagram entry is via TinyCAD (included).
The SAVE-IDE is an integrated development environment for architectural and component-based design of embedded systems. Including a tool chain for analysis, verification and code generation, with focus on safety and real-time.