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Data Science AnalyticsTop 10 Best Esg Ratings Software of 2026
Ranked roundup of esg ratings software for ESG teams, with comparison notes on EcoVadis, Diligent ESG, and Novata. Criteria and tradeoffs.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
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Framework: Features 40% · Ease 30% · Value 30%
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EcoVadis is the most reliable pick when procurement teams need repeatable supplier ESG assessments with benchmarking evidence workflows, and Diligent ESG fits governance teams that want evidence-led reporting with controlled access and an audit trail.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
EcoVadis
Evidence collection tied to standardized ESG scoring and benchmarking, using supplier questionnaires and structured submissions.
Best for: Fits when procurement teams need repeatable supplier ESG assessments and benchmarking evidence workflows.
Diligent ESG
Editor pickEvidence vault workflows link submissions to disclosures and preserve an audit trail through approvals.
Best for: Fits when governance teams need evidence-led ESG workflows with controlled access and audit trail.
Novata
Editor pickMethodology-aligned indicator packs that preserve evidence context across rating cycles, reducing rework after disclosure updates.
Best for: Fits when ESG teams need repeatable, evidence-linked rating submissions across many methodologies.
Comparison Table
EcoVadis
enterpriseSustainability ratings platform for supply chain ESG assessment.
Evidence collection tied to standardized ESG scoring and benchmarking, using supplier questionnaires and structured submissions.
EcoVadis runs a buyer-to-supplier assessment loop built around structured questionnaires, evidence submission, and scoring outputs that support procurement-driven supplier screening. The tool’s framework mapping helps align evidence to assessment criteria, while its supplier portal supports ongoing engagement across multiple reporting cycles. Admin controls cover assessment setup, role-based access for participants, and controlled sharing of assessment outcomes with internal stakeholders.
A key tradeoff is that value depends on supplier participation quality, since weak or incomplete evidence submission limits score reliability. EcoVadis fits best when supplier onboarding and periodic reassessment are already part of procurement governance, and when evidence collection can be centralized through a repeatable supplier workflow.
- +Standardized supplier ESG scoring driven by evidence-backed questionnaires
- +Supplier evidence workflow reduces buyer manual chasing of documents
- +Consistent benchmarking outputs support supplier comparisons at scale
- +Role-based access and governance controls support buyer internal visibility
- –Supplier evidence completeness strongly drives score outcomes
- –Deep reporting integration requires careful process design across teams
Sustainability and procurement teams
Recurring supplier ESG reassessments
More consistent scoring across rounds
Supplier enablement managers
Guiding suppliers through evidence submission
Higher completion rates
Show 1 more scenario
Risk and compliance leads
Supplier ESG screening for audits
Faster supplier risk reviews
Rating outputs provide auditable evidence trails for internal due diligence workflows.
Best for: Fits when procurement teams need repeatable supplier ESG assessments and benchmarking evidence workflows.
Diligent ESG
enterpriseESG data management and reporting software for governance teams.
Evidence vault workflows link submissions to disclosures and preserve an audit trail through approvals.
Diligent ESG is built around controlled ESG data collection and review, with structured workflows for preparing disclosures, collecting support, and routing approvals. The system’s evidence handling is a core differentiator for stakeholders who need traceability from a reported figure back to the originating input and attachments. For materiality-related work, the configuration supports mapping work into the disclosure structure used for reporting cycles. RBAC and audit trail coverage support governance teams who run recurring attestations and need controlled access to drafts and evidence.
A key tradeoff is that deeper framework coverage and reporting boundary practices depend on deliberate configuration of the disclosure structure and the underlying collection workflow. The product fits best when an organization needs repeatable internal controls across multiple business units and wants to standardize how evidence is captured and reviewed each cycle. Teams that mainly need lightweight CDP questionnaire completion without governance controls may find the workflow depth heavier than necessary.
- +Workflow-driven evidence handling for traceable disclosures
- +RBAC and audit log support controlled internal signoff
- +Framework mapping configuration for consistent reporting structure
- +Automation for recurring collection and review cycles
- –Framework setup and boundary configuration require governance discipline
- –Complex workflows can slow first-time template adoption
- –Some reporting formatting steps rely on configured disclosure structure
- –API integration effort can increase when data sources vary
ESG program governance teams
Run evidence-led approval workflows
Fewer signoff gaps
Sustainability data operations
Standardize metric collection across units
More uniform datasets
Show 2 more scenarios
Regulatory reporting owners
Map disclosures to reporting structure
Faster cycle preparation
Use configurable framework mapping to align internal metrics to disclosure sections.
Assurance-facing analysts
Maintain traceability from figures
Cleaner evidence trails
Keep attachments and input lineage connected to reported values.
Best for: Fits when governance teams need evidence-led ESG workflows with controlled access and audit trail.
Novata
enterpriseESG data platform designed for private markets.
Methodology-aligned indicator packs that preserve evidence context across rating cycles, reducing rework after disclosure updates.
As a top-ranked esg ratings software option, Novata emphasizes workflow configuration for rating questionnaires and scorecard-aligned data collection, including attribution to disclosure statements. The tool is built for repeat cycles, where the same indicator set can be revalidated with updated evidence while preserving audit-ready context.
A key tradeoff is that high coverage across rating sources depends on upfront method and indicator mapping effort. Teams with steady disclosure cadence often use Novata to centralize GHG and narrative evidence for rating submissions, then rerun scoring packs when methodology revisions change.
- +Evidence-to-answer traceability for rating questionnaire workflows
- +Indicator and methodology mapping supports multi-cycle reuse
- +Centralized data aggregation for disclosures across ratings
- +Change-friendly revalidation workflow for updated evidence sets
- –Requires disciplined indicator mapping before scaling across rating sources
- –Narrative and evidence governance can demand ongoing review overhead
- –Complex rating packs can slow navigation without strong internal standards
ESG disclosure operations teams
Rebuild evidence packs for rating questionnaires
Faster submission turnaround
Sustainability analysts
Maintain a shared indicator dataset
More consistent scoring inputs
Show 2 more scenarios
ESG reporting program managers
Update submissions after methodology changes
Lower rework effort
Teams revalidate answers and evidence when rating requirements shift.
Assurance and compliance stakeholders
Review evidence behind disclosed claims
Reduced review friction
Audit-friendly traceability connects reported statements to underlying source documentation.
Best for: Fits when ESG teams need repeatable, evidence-linked rating submissions across many methodologies.
Persefoni
enterpriseCarbon accounting and climate reporting platform for enterprises.
Emissions calculation and evidence capture stay linked inside the review workflow, so metric changes carry an audit trail.
Persefoni centralizes ESG data collection into a governed workflow for emissions and sustainability reporting, with materiality and reporting-boundary controls that support CSRD-style disclosures. The system connects emissions calculations to evidence capture, including emission factor handling and documentation storage for audit trail needs.
- +Workflow controls for reporting boundaries and metric ownership reduce disclosure errors
- +Emissions calculation logic stays tied to evidence capture for audit trail needs
- +Framework mapping supports repeatable publication runs across reporting cycles
- +Admin permissions and review steps help govern multi-team data entry
- –Deep configuration demands governance discipline to keep calculations consistent
- –Some collaboration patterns require process setup rather than ad hoc use
Best for: Fits when teams need governed emissions workflows tied to evidence for repeatable sustainability disclosures.
Workiva
enterprisePlatform for ESG reporting and disclosures with data management.
Workiva Links enables dependency-based calculations across spreadsheets and reporting sections for audit-ready traceability.
Workiva is used to centralize ESG data workflows across collection, evidence attachment, and regulator-facing reporting. Its Wdata and Workiva Links support cross-workbook references for metric lineage, which helps teams trace where each figure originates.
- +Cross-workbook linking preserves metric lineage from source to disclosure
- +Evidence vault attachments keep questionnaire and reporting claims traceable
- +Workflow automation reduces manual rework for recurring disclosure cycles
- +API supports integration with data ingestion, validation, and reporting tools
- –Deep configuration is required to keep calculations, mappings, and boundaries consistent
- –Advanced governance depends on disciplined RBAC setup across contributors
Best for: Fits when enterprises need governed ESG data workflows that trace every metric to evidence for ratings and regulator disclosures.
CDP
enterpriseGlobal disclosure system for environmental data and ratings.
CDP questionnaire response management with versioned audit trail and evidence linking to each answered question.
CDP is an ESG ratings software solution built around the CDP questionnaire workflow for collecting climate, water, and forest data. It supports emissions-oriented data aggregation and evidence capture for disclosure, using framework-aligned mappings that track what was answered, by what boundary, and with what inputs.
- +Questionnaire-first workflow matches how CDP disclosures are compiled
- +Evidence management supports traceable responses during review cycles
- +Framework mapping helps maintain consistent answers across boundaries
- +API access and automation options support scheduled data refresh
- –Complex governance setup can slow first-time rollout for large teams
- –Limited flexibility for non-CDP disclosure flows without customization work
- –Some supplier assessment workflows require external data preparation
- –Reporting boundary normalization can demand careful base-year alignment
Best for: Fits when teams need questionnaire-grade climate, water, or forest data collection tied to CDP disclosure.
Bloomberg ESG Data
enterpriseESG data and ratings accessible through Bloomberg Terminal.
Dataset linking and provisioning built around Bloomberg identifiers for consistent cross-source company matching.
Bloomberg ESG Data differentiates with market-grade sustainability datasets linked to its financial information ecosystem. It supports ESG data collection, data aggregation, and framework mapping for reporting workflows that align to major disclosure expectations.
- +High coverage of standardized ESG dataset fields for benchmarking
- +Strong integration pathways into financial and risk workflows
- +Framework mapping supports consistent metric normalization
- +Data lineage support for traceability across sourced fields
- –Limited native workflow tooling for CSRD authoring and evidence bundling
- –Setup requires disciplined mapping of internal boundaries and reporting scope
Best for: Fits when teams need institution-grade ESG benchmarking inputs integrated into existing finance and risk stacks.
S&P Global ESG Scores
enterpriseESG scores based on CSA methodology for global companies.
S&P scoring methodology alignment with evidence traceability designed to support readiness against S&P ESG score inputs.
S&P Global ESG Scores is an ESG ratings solution built around S&P Global’s scoring methodology, benchmarking, and evidence expectations tied to published ESG score outputs. The core workflow centers on preparing inputs for scoring against S&P’s ESG framework, managing disclosures by reporting boundary, and maintaining an audit trail for what was used.
- +Scoring methodology alignment supports consistent framework mapping to S&P ESG outputs
- +Strong audit trail supports evidence traceability for disclosures feeding score calculations
- +Benchmarking view helps track indicator gaps against modeled expectations
- +API-first integration supports moving structured ESG indicators into assessments
- –Setup requires careful configuration of reporting boundary and mapping to score inputs
- –Less suited for bespoke scoring models that diverge from S&P’s methodology inputs
- –Integration workload rises when data formats differ from modeled indicator structures
- –Admin controls are not the focus compared with governance-heavy ESG reporting suites
Best for: Fits when teams need S&P-aligned ESG benchmarking inputs with traceable evidence and structured integrations.
RepRisk
enterpriseESG data science providing risk ratings based on public sources.
Controversy and risk-event intelligence tied to per-entity evidence and analyst review trails.
RepRisk performs ESG risk monitoring by aggregating public and commercial data into company risk signals, entity profiles, and watchlists. It is geared toward mapping and tracking controversies, key risk events, and exposure trends that feed ESG scoring methodology workflows used in investment and corporate risk processes.
- +Strong controversy and risk-event monitoring workflow for tracked entities
- +Evidence linking supports analyst review and traceable decisions
- +Entity watchlists help operationalize ongoing monitoring
- +API and integration options fit downstream ESG data aggregation
- –Requires careful entity setup to avoid noisy risk signals
- –Less suited for teams that only collect survey responses without monitoring
Best for: Fits when ESG teams need ongoing controversy-aware monitoring to support risk scoring and reporting inputs.
Sustainalytics ESG Risk Ratings
enterpriseESG risk ratings and research for investors and companies.
Third-party ESG risk ratings built from a defined research methodology that ties disclosures to sector risk drivers for comparability.
Sustainalytics ESG Risk Ratings delivers a third-party ESG risk scoring and research output aimed at investors and large corporates comparing companies on material risk exposure. The core capability is a structured methodology that maps company disclosures to ESG risk drivers and produces a comparable risk rating with sector context.
- +Consistent company risk rating output designed for benchmarking across sectors
- +Methodology-driven coverage aligned to material ESG risk drivers and disclosure signals
- +Integration with investor workflows that require defensible third-party ratings evidence
- +Strong sector context for interpreting rating levels and risk materiality
- –Limited fit for internal custom scoring frameworks without additional data pipelines
- –Manual review is often needed to reconcile internal entity data to rating inputs
- –Automation depth depends on external integration approach and data handling
- –Granular audit trail usability can be constrained by evidence availability per entity
Best for: Fits when investor or enterprise teams need consistent third-party ESG risk benchmarking for screening decisions.
Conclusion
After evaluating 10 esg ratings software, EcoVadis stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right Esg Ratings Software
ESG ratings software manages the workflow behind sustainability scoring inputs by connecting evidence collection to questionnaire answers, emissions calculations, and disclosure-ready claims. This guide covers EcoVadis, Diligent ESG, Novata, Persefoni, Workiva, CDP, Bloomberg ESG Data, S&P Global ESG Scores, RepRisk, and Sustainalytics ESG Risk Ratings, with category picks focused on Diligent ESG, CDP, and Workiva.
The tools covered here differ most in integration depth for finance and risk stacks, automation and audit trace continuity from data entry to score outputs, and governance controls like RBAC and audit logs. EcoVadis is emphasized for standardized supplier evidence workflows, while Diligent ESG is emphasized for evidence vault approvals and audit trail controls.
ESG Ratings Software for evidence-to-score workflows, questionnaires, and benchmarking inputs
ESG ratings software is used to collect and package sustainability data so it can feed ESG scoring methodologies, including supplier questionnaires, emissions computations, and disclosure boundary mapping. EcoVadis focuses on supplier evidence workflows that link structured submissions to standardized supplier ESG scoring and benchmarking evidence needs.
Diligent ESG emphasizes evidence vault workflows that tie submissions to approvals and preserve an audit trail via controlled access. Workiva is built around governed ESG data workflows that preserve metric lineage using dependency-based calculation links and evidence vault attachments for traceability to ratings and regulator disclosures.
Evidence-to-score controls, integration depth, and questionnaire traceability
ESG ratings software becomes measurable when it ties each submitted claim to the evidence artifact that produced it, then preserves that link through approvals and score inputs. EcoVadis and Diligent ESG both emphasize evidence-to-score trace continuity, but they implement it through different workflow centers.
Integration matters because ESG scoring inputs often originate in finance and risk tools, then feed evidence bundles and disclosure claims. Workiva and Bloomberg ESG Data both support upstream-to-downstream consistency, but Workiva focuses on governed calculation chains while Bloomberg focuses on identifier-based dataset provisioning.
Evidence vault workflows with audit trail continuity
Diligent ESG links submissions to disclosures through evidence vault workflows that preserve an audit trail through approvals. Workiva also uses evidence vault attachments, but it pairs them with dependency-based calculation links for metric lineage.
Methodology alignment that maps evidence to questionnaire answers
EcoVadis drives supplier evidence workflows into structured supplier scoring and benchmarking needs using standardized submissions. Novata preserves evidence context across rating cycles with methodology-aligned indicator packs mapped to rating questionnaire workflows.
Emissions calculation and evidence-coupled review workflows
Persefoni keeps emissions calculation logic tied to evidence capture so metric changes carry an audit trail inside the review workflow. Workiva provides traceability by tying metric outputs to evidence vault attachments through cross-workbook linking mechanisms.
Questionnaire-grade response management for specific disclosure programs
CDP centers questionnaire response management with a versioned audit trail and evidence linking to each answered question. EcoVadis supports supplier questionnaires as a structured submission workflow, but it is oriented around supplier assessment and benchmarking evidence rather than CDP-style question-by-question response compilation.
Benchmarking dataset provisioning and identifier-based matching
Bloomberg ESG Data provisions standardized ESG dataset fields built around Bloomberg identifiers for consistent cross-source company matching. S&P Global ESG Scores supports S&P methodology alignment with evidence traceability designed to feed score-related inputs rather than broad identifier-based dataset matching.
Controversy and risk-event intelligence with evidence and analyst trails
RepRisk ties controversy and risk-event intelligence to per-entity evidence and analyst review trails. Sustainalytics delivers third-party ESG risk rating outputs built from research methodology tied to sector risk drivers for benchmarking rather than ongoing controversy monitoring workflows.
Choose by workflow center, evidence linkage, and governance depth
Start by identifying where the workflow is anchored in the organization so the software matches how evidence is created, reviewed, and released. EcoVadis and CDP both process evidence for scoring and disclosures, but EcoVadis is supplier- and benchmarking-driven while CDP is questionnaire-response-driven.
Then confirm how governance is enforced across contributors so audit trail continuity survives collaboration. Diligent ESG emphasizes RBAC and audit log support for controlled internal signoff, while Workiva relies on disciplined RBAC setup to govern contributors working across governed calculations.
Select the workflow center: supplier evidence, questionnaire responses, or emissions calculations
If the primary workload is supplier ESG assessments with structured submissions, EcoVadis provides supplier evidence workflows that feed standardized supplier scoring and benchmarking evidence needs. If the primary workload is CDP questionnaire compilation with evidence linked to each answered question, CDP provides questionnaire-first response management with a versioned audit trail.
Validate evidence-to-answer traceability through approvals, not just storage
If approvals and controlled access are required for traceable disclosures, Diligent ESG provides evidence vault workflows that preserve an audit trail through approvals with RBAC and audit log support. If traceability must extend through calculations that depend on upstream spreadsheets, Workiva Links enables dependency-based calculation paths that preserve metric lineage from source to disclosure.
Match methodology reuse needs across rating cycles
If rating submissions must be reused across many methodologies without rework, Novata preserves evidence-to-answer traceability using methodology-aligned indicator packs mapped for multi-cycle reuse. If governance demands that metric changes carry an audit trail inside the calculation and review workflow, Persefoni keeps emissions calculation logic tied to evidence capture.
Decide how much third-party dataset and identifier provisioning is needed
If consistent cross-source company matching and standardized ESG dataset fields are the priority, Bloomberg ESG Data builds provisioning around Bloomberg identifiers for benchmarking inputs. If methodology alignment for score inputs tied to evidence traceability is the priority, S&P Global ESG Scores focuses on S&P scoring methodology alignment designed to support readiness against S&P ESG score inputs.
Add controversy monitoring only when entity intelligence is part of the input workflow
If ongoing controversy and risk-event monitoring is needed for risk scoring and reporting inputs with traceable analyst decisions, RepRisk supports controversy-aware monitoring tied to per-entity evidence and analyst review trails. If the goal is consistent third-party ESG risk rating outputs for screening decisions, Sustainalytics provides methodology-driven coverage aligned to material ESG risk drivers rather than monitoring workflows.
Teams that need evidence traceability and rating-aligned workflows
ESG ratings software fits teams that must convert evidence into structured answers and emissions-calculation outputs that can survive internal review and external scoring processes. The best match depends on whether the bottleneck is supplier evidence collection, questionnaire compilation, or emissions calculation governance.
The tools also split by whether they primarily support scoring methodology-aligned workflows or provide supporting datasets and risk intelligence. That split changes what administrators need to configure and how audit trail continuity is maintained.
Sustainability and procurement teams running supplier ESG assessments
EcoVadis supports repeatable supplier evidence workflows using structured submissions that feed standardized supplier ESG scoring and benchmarking evidence needs.
Governance teams managing audit-ready internal signoff and controlled access
Diligent ESG provides RBAC and audit log support plus evidence vault workflows that link submissions to disclosures and preserve an audit trail through approvals.
Reporting operations teams that must trace metric lineage from spreadsheets to disclosures
Workiva combines Workiva Links dependency-based calculation paths with evidence vault attachments so metric outputs and questionnaire claims can be traced from source to disclosure.
Climate data teams managing emissions calculation workflows tied to evidence
Persefoni keeps emissions calculation and evidence capture linked inside the review workflow so metric changes preserve audit trail continuity.
Investor or enterprise teams using third-party risk ratings for screening and benchmarking
Sustainalytics provides consistent ESG risk rating outputs built from research methodology tied to sector risk drivers, while Bloomberg ESG Data provides standardized ESG dataset fields for benchmarking inputs.
Common ESG Ratings Software pitfalls during implementation
Most failures come from choosing a workflow that does not match how evidence is produced or reviewed, then treating evidence linkage as a static document repository. Several tools explicitly warn that governance discipline and configuration quality directly affect traceability and score readiness.
Another failure mode is over-relying on third-party ratings or datasets without integrating them into the evidence creation workflow that produces disclosure claims. That gap shows up when internal calculation and questionnaire inputs cannot reconcile to the rating inputs.
Buying around evidence storage while underfunding approval and audit trail governance.
Diligent ESG ties evidence vault workflows to approvals with audit trail and RBAC, so rollout must include contributor roles and signoff paths rather than only document upload.
Treating emission calculations as independent of evidence capture and expecting audit trail continuity.
Persefoni keeps emissions calculation logic linked to evidence capture inside the review workflow, so teams must design the calculation inputs so evidence attachments move with metric updates.
Scaling methodology reuse without completing indicator mapping before handling many rating sources.
Novata requires disciplined indicator mapping before scaling across rating sources, so early template and mapping work is a prerequisite to reducing rework after disclosure updates.
Assuming spreadsheet traceability exists without configured dependency links and consistent boundaries.
Workiva requires deep configuration to keep calculations, mappings, and reporting boundaries consistent, so governance must cover contributor setups and boundary definitions to preserve lineage.
Collecting only survey responses while expecting continuous controversy awareness for risk inputs.
RepRisk supports controversy and risk-event intelligence tied to per-entity evidence and analyst review trails, so entity setup and monitoring workflows must be in scope rather than only questionnaire collection.
How We Selected and Ranked These Tools
We evaluated how each product turns evidence into rating-ready outputs by measuring workflow traceability from submissions to score-relevant claims, including audit trail continuity through approvals and review cycles. Features counted for 40% because evidence vault workflows, emissions-coupled review logic, and dependency-based calculation linking determine whether auditors can follow a claim back to its source.
Ease and value each counted for 30% because first-time rollout friction affects whether teams actually maintain consistent configuration and contributor governance. EcoVadis separated itself by combining standardized supplier evidence workflows with benchmarking-oriented structured submissions that directly drive supplier ESG scoring outcomes from evidence-backed questionnaire participation.
Frequently Asked Questions About Esg Ratings Software
How do Diligent ESG and Workiva differ for evidence workflows tied to ESG disclosures?
Which tools support framework mapping from internal data to external rating or disclosure requirements?
How does EcoVadis handle recurring supplier evidence collection compared with CDP questionnaire workflows?
When does RepRisk become a better fit than S&P Global ESG Scores for ESG rating inputs?
Which products emphasize emissions calculation governance and evidence capture in a single workflow?
What breaks if an organization cannot integrate with existing systems for ESG data movement?
How do audit trail and review controls show up in Diligent ESG compared with Sustainalytics ESG Risk Ratings?
Which tools support SSO and RBAC style access control patterns for cross-team governance?
How do data migration and reuse workflows differ between Novata and Bloomberg ESG Data?
What tradeoff appears when choosing RepRisk for monitoring versus EcoVadis for supplier benchmarking?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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