CMLCA is a software tool that supports the calculation of:
CMLCA is intended to support the technical steps of the tools described. It does not support the procedural aspects, like peer review, involvement of stakeholders, quality assurance and usefulness of the analysis for the decision at stake. The program assumes that the user is aware of the basic principles of LCA, IOA, etc.
CMLCA is just one of the many software tools that is available for the stated purposes. However, its philosophy is probably somewhat different. CMLCA does not provide a flexible user interface. Exchange of data with other programs is less extensive than with some other programs. There is only a small choice in graphical output, and the graphs are not 'fancy': no 3-D bars with shadow, just straight bar charts. There is no helpdesk. It may contain programming errors.You may find a couple of of screenshots on this page.
On the other hand, it is developed with the principles of LCA, IOA, etc. in mind, so that it is quite accurate and up-to-date as to methodological details. It is, for example, fully based on matrix algebra, although the user may be unaware of that whilst using the program. This implies that process trees with a recursive flow structures (steel production needing coal and coal production needing steel), provide no computational problems and are exactly solved. Moreover, the program is very flexible in dealing with allocation of multiple processes. In contrast with some other programs, such processes need not be allocated prior to their entry in the database, and the allocation method (substitution, partitioning, or no allocation at all) may be defined for each individual unit process. The program also supports fully hybrid inventories, consisting of process-based and IO-based data. It is rich in its analytical possibilities.
The program will continue to develop, in a progressive way such that all present features will remain available, and that data saved with the present version may be retrieved in future versions. CML, the Institute of Environmental Sciences at Leiden University, has ever since the conception of LCA played a prominent role in developing LCA, and it is still at the forefront of activity, both in its methodological advances, and in its standardization and progress towards maturity. CML has also been very active in EIOA and hybrid analysis the last few years. CMLCA will follow these developments, and sometimes it will even lead these.
CMLCA is scientific software, in two senses:
CMLCA, finally, is freely downloadable and need not be installed.
The choice is yours: seven arguments pro and seven against. You can at least give it a try.