The 5 best EcoVadis providers in 2026

You are looking for a provider to prepare your EcoVadis assessment. The problem: the market mixes generalist consultancies, carbon platforms that bolt on EcoVadis as an afterthought, and SaaS vendors that do not know the methodology. Comparing them is like comparing a plumber, an architect, and a flat-pack kit.

This article uses one axis: depth of EcoVadis-native expertise paired with tooling you keep between cycles. That is the criterion that separates a one-off helping hand from a system that moves your score year after year. If you are still deciding between doing it yourself, hiring a consultant, or working with a provider, our article on whether to prepare EcoVadis yourself, with a consultant, or with a provider breaks down all three options.

This comparison is especially suited for the French market. Some providers on this list serve France only.

Selection criteria

Four criteria structure this comparison:

• Official EcoVadis relationship (Training Partner, Strategic, Core, or none).
• Delivery model: software platform, consulting-only, or both.
• Human support: dedicated experts or self-service.
• Volume of medaled clients and measurable results.

The 5 best EcoVadis providers in 2026

1. Ditto

EcoVadis Accredited Core Consulting Partner since 2023. Platform plus human experts. 500+ companies supported across Europe, 100% medal rate, +16 points average first-year improvement. Ditto holds EcoVadis Platinum 2026 and lets you automate your EcoVadis questionnaire responses.

Ditto is the only provider that is both an official EcoVadis Accredited Core Consulting Partner and delivers through a platform backed by experts, at scale.

Best for: companies that want EcoVadis-specific expertise and tools to reuse their proof documents across sustainability frameworks.

Avoid if: you already have a dedicated CSR team, a fully documented management system, and a track record of Gold or Platinum medals without external support.

2. Nexio Projects

EcoVadis Accredited Strategic Partner. Consultancy-first, no standalone platform. Claims "#1 EcoVadis consultancy worldwide." Multi-year programs for large organizations.

Best for: large enterprises needing a long-term consulting engagement across multiple frameworks.

Avoid if: you want a tool you use autonomously between consulting sessions. Nexio does not offer a client-facing platform.

3. Altopi

EcoVadis Accredited Core Consulting Partner. Consultancy-first, internal collaborative tools for delivery but no client-facing platform. France only.

Best for: companies looking for a local French consultant with official EcoVadis recognition.

Avoid if: you need a platform, need to scale, or operate outside France.

4. Greenly

No EcoVadis partnership. Carbon measurement platform first, EcoVadis preparation is adjacent. Limited EcoVadis-specific expertise and human support.

Best for: companies whose primary need is carbon accounting and who want EcoVadis as an add-on.

Avoid if: EcoVadis is your main objective. Carbon-first providers generally lack the depth of EcoVadis-specific methodology: no official partnership, no track record of medal outcomes.

5. Sustainsoft

EcoVadis Accredited Core Consulting Partner since 2025. Software (SaaS) platform with substantial human support included alongside the tool.

Best for: companies that want EcoVadis-focused software paired with meaningful human support.

Avoid if: you want a consulting-only engagement with no software platform at all.

Comparison table

How to choose

Three questions are enough:

1. Why do you need this scorecard? If it is a formality, self-service may suffice. If you want real progress, you need EcoVadis-native expertise.
2. One-off or recurring? A single cycle justifies consulting. Recurring assessments justify a platform you keep.
3. Who owns the topic after submission? If the answer is "nobody," you need a tool that structures work between cycles.

Best EcoVadis providers — Key takeaways