LCA Software Showdown: A Deep Dive into LCA for Experts (GaBi), SimaPro, and OpenLCA

LCA software compared: LCA for Experts (GaBi), SimaPro, and openLCA

Life Cycle Assessment has become an essential tool for evaluating the environmental footprint of products and processes, and the choice of software shapes the accuracy, efficiency, and depth of the analysis. This article examines the three platforms most widely used in professional practice: LCA for Experts (formerly GaBi), SimaPro, and openLCA.

LCA for Experts (GaBi)

LCA for Experts is widely used as a professional standard in industrial LCA, and it is also the most demanding of the three to learn. Its strengths lie in depth of modelling and breadth of inventory data, which is why it is common among consultants, large corporations, and research groups. Its interface complexity and learning curve are the trade-off, and they are real for newcomers.

Key features

• Impact assessment methods — a wide selection including CML and ReCiPe, allowing potential environmental impacts of different products and processes to be quantified and compared.
• Advanced modelling. Complex product systems can be modelled with detailed interaction between life cycle stages, which is where the platform is strongest.
• Parameterisation and customisation. Models can be driven by named parameters and adapted to specific research questions rather than rebuilt for each variant.
• Data quality documentation. Datasets carry documentation supporting traceability of input data.
• Visual plan interface. The model is presented as a flow diagram, so structure and connections are visible on screen. In our experience this is a genuine advantage for teaching and for reviewing complex systems.
• Analysis and reporting. Sensitivity analysis, scenario analysis, and parameter variation are supported, with the i-Report feature for compiling results. This makes it well suited to comparing scenarios, prototypes, and technology development options. The reporting output is functional rather than polished, and export to Excel is a manual step — a point of friction relative to SimaPro.
• Database coverage. A comprehensive professional database is included, with a large number of additional databases available separately, including ecoinvent. Coverage extends across most industrial sectors.

Best suited to

• Enterprises and large projects with complex supply chains and process systems.
• Experienced practitioners who need advanced modelling and parameterisation.
• Consultancies and corporations conducting detailed studies intended for external review.
• Researchers and academics requiring modelling flexibility.

SimaPro

SimaPro balances accessibility against capability. Its interface is more approachable than LCA for Experts, and its database coverage supports a wide range of users from SMEs to large organisations. It offers less modelling customisation than LCA for Experts, but provides a solid basis for comprehensive studies and is very widely taught.

Key features

• Accessible interface. Faster to become productive in, which matters where several people need to use the tool.
• Extensive database access, with strong ecoinvent integration.
• Integration with other tools. Export to Excel and Word is well developed, which speeds up reporting and data exchange.
• Uncertainty and comparison workflows. Monte Carlo analysis and comparative assessment are well established in the tool.
• Data quality documentation supporting traceability of inputs.

Best suited to

• Small and medium-sized enterprises needing a capable tool without a long onboarding period.
• Organisations wanting a balance of accessibility and analytical depth.
• Students and educators, where it is widely used as a teaching platform.

openLCA

openLCA is open-source, which removes the software licence barrier entirely and makes it a practical choice for organisations building internal capability. Its active community and open architecture allow adaptation to specific needs. Setup and customisation can require more technical involvement, but the platform serves both newcomers and experienced practitioners.

Key features

• Open-source. No software licence fee, and the calculation logic is inspectable rather than a black box.
• Adaptable platform. Can be extended and integrated into other workflows.
• Community support from an active user and developer base.
• Broad method and database compatibility, including ecoinvent and a range of freely available datasets.

Best suited to

• Researchers and developers who want to adapt or extend the tool.
• Organisations with constrained budgets seeking a capable solution without licence cost.
• Individuals and small teams learning LCA or running occasional studies.
• Students and training environments, where every participant can install it.

Side by side

Choosing the right software

The right choice depends on the work rather than on any single ranking. Weigh these factors against the studies you actually intend to produce.

• Database coverage. Confirm the available inventory data covers your materials, processes, and geographies. This matters more than any interface consideration.
• Impact assessment methods. Check the platform supports the methods your customers, standards, or programme operators require.
• Interface and workflow. A tool your team can actually operate produces more studies than a more capable one they avoid.
• Modelling flexibility. Consider how much parameterisation and customisation your studies genuinely need.
• Total cost. Software licence, database licence, training, and the internal time to build and maintain models — the last is consistently underestimated.
• Support. Vendor support, community support, or a training partner — whichever route, it needs to exist before the first difficult study.

Additional considerations

• Data quality. Prioritise documented, traceable datasets over volume of datasets.
• Transparency. Data sources and calculation methods must be disclosable for results to withstand review.
• Sensitivity analysis. Use it to test which assumptions actually decide the result.
• Inventory databases. A comprehensive and appropriate LCI database is what makes results credible; the software executes the calculation.

Learn and master LCA software with DEISO

DEISO offers training programs for all three major Life Cycle Assessment platforms — LCA for Experts (GaBi), SimaPro, and openLCA — with plans tailored to different levels of experience and different objectives.

You can compare the available plans and choose the one that fits, whether you are starting with LCA software for the first time or deepening existing practice. We also build customised training plans around specific client requirements. Get in touch to discuss which program fits your team.

LCA software training programs

• LCA for Experts (GaBi)
• SimaPro
• openLCA