Arduino IDE - Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware...
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.
PlatformIO - Next-generation IDE for IoT
itom - itom is an open source software suite for operating measurement systems, laboratory automation and...
Arduino Eclipse plugin - Where Arduino meets Eclipse
PyLab_Works - PyLab_Works is a free and open source replacement for LabView + MatLab, written in pure Python.