Top 5 Brightest alternatives & competitors (2025)

Written by
Camille Charluet - Climate Tech & ESG Writer
January 15, 2025
5
min read

Considering Brightest for sustainability management and compliance? We'll break down what it offers and why it's popular, helping you decide if it aligns with your sustainability goals. Plus, we’ll explore five Brightest alternatives that could be an even better fit for your business, including:

  1. Coolset
  2. Sweep
  3. Greenly
  4. Plan A
  5. osapiens

What is Brightest?

Brightest is a sustainability management platform designed to help companies manage their environmental, social, and governance (ESG) initiatives, sustainability efforts, and social impact programs.

The software centralizes key sustainability data like carbon emissions, energy use, and HR metrics. It makes it easier for teams to collaborate, track progress, and ensure compliance with regulations such as the Corporate Sustainability Reporting Directive (CSRD), United Nations Sustainable Development Goals (UN SDGs), and more.

The platform also includes a double materiality feature, helping organizations prioritize European Sustainability Reporting Standards (ESRS) topics that matters most, and offers flexible tools for ESG reporting and stakeholder engagement.

Why do businesses choose Brightest?

Businesses choose Brightest for its ability to unify ESG management into a single, easy-to-use platform. Instead of juggling multiple tools, users appreciate that Brightest handles everything from data collection to reporting and collaboration, in one place. 

Reviews highlight how customizable and well-designed the software is, especially for creating helpful dashboards and charts that save time and make reporting smoother. 

Companies also value how it integrates team efforts and supplier collaborations, making it easier to align on both short-term and long-term sustainability goals.

The top 5 Brightest alternatives compared

Now that we know what Brightest is all about, let’s take a look at five Brightest alternatives that may be a better match for your business.

1. Coolset

As the authors of this content, we want to be upfront about including Coolset on this list. We believe Coolset is an excellent choice for mid-market companies looking for an all-in-one sustainability management and CSRD compliance solution. Whether your focus is on carbon reduction or compliance, Coolset offers support throughout your entire sustainability journey.

Website: www.coolset.com 

Best for: Mid-market companies

Key features:

2. Sweep

Sweep is a sustainability data management platform that helps businesses track, disclose, and reduce their carbon emissions. It provides tools for measuring, analyzing, and reporting large datasets, ensuring compliance with the latest ESG standards such as the CSRD, Greenhouse Gas Protocol (GHGP), and more. 

Website: www.sweep.net 

Best for: Caters to companies of all sizes

Key features:

  • Carbon and ESG data monitoring
  • Supply chain sustainability management
  • Compliance with multiple disclosure standards
  • Simplified audit preparation
  • AI-powered sustainability insights

3. Greenly

Greenly is a carbon accounting platform designed to help businesses of all sizes measure, reduce, and report their carbon emissions. It offers tools for carbon footprint analysis, Life Cycle Assessments (LCA), and supply chain decarbonization. Greenly also supports carbon reduction planning, offsetting, and compliance with the CSRD, SBTi, and GHG Protocol.

Website: www.greenly.earth 

Best for: Small to mid-sized businesses

Key features:

  • Carbon footprint assessments
  • Life Cycle Assessments (LCA)
  • Supply chain decarbonization
  • Carbon reduction planning
  • Carbon offset solutions
  • Compliance with CSRD and SBTi certification

4. Plan A

Plan A is a sustainability platform that helps companies manage their environmental impact and carbon emissions. It provides tools for carbon accounting, ESG reporting, and creating decarbonization strategies. With Plan A, businesses can use data to create science-based targets, reduce emissions, and meet long-term sustainability goals.

Website: www.plana.earth 

Best for: Medium to large businesses with complex sustainability and risk management needs​

Key features:

  • Carbon analysis tools
  • ESG compliance reporting
  • Science-driven target setting
  • Automated reporting features
  • Sustainability tracking for supply chains

5. osapiens

osapiens is an ESG platform designed to help companies enhance their corporate sustainability practices. It improves transparency across the value chain, ensures compliance with all ESG regulations, and automates time-consuming manual processes like data collection and reporting. 

Website: www.osapiens.com 

Best for: Companies with complex supply chains

Key features:

  • Automated carbon footprint tracking (Scopes 1, 2, 3)
  • Double materiality assessment support
  • Supply chain transparency
  • Compliance with multiple ESG frameworks
  • Real-time data integration
  • Supplier management and due diligence tools
  • Track-and-trace for product lifecycle

Why Coolset is your best bet for sustainability management and compliance

While each Brightest alternative offers its own strengths, we find Coolset to be the most balanced and user-friendly solution for mid-market businesses. Tailored specifically for mid-sized companies, Coolset delivers the essential features without the complexity of enterprise-level software or the limitations found in smaller tools.

Whether your goal is to achieve CSRD compliance or improve your overall sustainability performance, Coolset offers an all-in-one platform that simplifies the process. 

Curious if Coolset is the right fit for your company? Check out our interactive demo below or schedule a free walkthrough with one of our product experts today.

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Updated on March 24, 2025 - This article reflects the latest EU Omnibus regulatory changes and is accurate as of March 24, 2025. Its content has been reviewed to provide the most up-to-date guidance on ESG reporting in Europe.

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