HISE - Open source framework and tool set for building virtual instruments.

LabVIEW - LabVIEW offers many of the functions you'd find in a traditional script-based programming language presented in a more intuitive visual interface ideal fo engineering.

FlowCode - Flowcode is a graphical programming language and IDE for devices such as Arduino or PIC microcontrollers as well as Raspberry Pi.

itom - itom is an open source software suite for operating measurement systems, laboratory automation and...

FlowStone - FlowStone - the new graphical computer programming tool that allows you to create your own standalone programs quicker and more easily than ever before, download for FREE!

PyLab_Works - PyLab_Works is a free and open source replacement for LabView + MatLab, written in pure Python.