  There is currently a lot of activity in R\&D for future collider experiments.
Multiple detector prototypes are being tested, each one with slightly different
requirements regarding the format of the data to be analysed. This has
generated a variety of ad-hoc solutions for data acquisition and online data
monitoring. We present a generic C++11 online monitoring framework called
DQM4HEP, which is designed for use as a generic online monitor for particle
physics experiments, ranging from small tabletop experiments to large
multi-detector testbeams, such as those currently ongoing/planned at the DESY
II or CERN SPS beamlines. We present results obtained using DQM4HEP at several
testbeams where the CALICE AHCAL, SDHCAL and SiWECAL detector prototypes have
been tested. During these testbeams, online analysis using DQM4HEP\'s framework
has been developed and used. We also present the currently ongoing work to
integrate DQM4HEP within the EUDAQ tool. EUDAQ is a tool for common and generic
data acquisition within the AIDA-2020 collaboration. This will allow these two
frameworks to work together as a generic and complete DAQ and monitoring system
for any type of detector prototype tested on beam tests, which is one of the
goals of the AIDA-2020 project.
