WIM systems are still a fairly young technology. Like many developing technology platforms, these are subject to fragmentation in terms of uses and standards. This paper addresses to efforts aimed at dealing with this fragmentation by observing two on-going projects. First system considered is the FIWI WIM database led by ISWIM, which through a cooperative effort aims at creating a WIM sensors and systems cartography. Second system considered is SITL system, which aims at developing a WIM data processing system. It is based mostly on open-source or free-use software. This system, while having a short term operational goals, is also meant as a demonstrator for promoting a formal WIM data model. Those two projects aim at serving and strengthing WIM users community by mutual understanding and promotion of common tools.