# Top 5 Brightest alternatives & competitors (2026)

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.

Author: Anna Kuppel
Published: 2026-01-02
Source: https://www.coolset.com/academy/top-brightest-alternatives-competitors

##### Key takeaways

<ul><li>ESG platforms differ in focus, from carbon-only measurement to full <a href="https://www.coolset.com/academy/csrd-eu-climate-regulation-explained" rel="noopener noreferrer">CSRD compliance</a> with double materiality, ESRS disclosures and audit-ready reporting in one platform.</li><li>Mid-market companies benefit from solutions that balance depth with usability, covering multiple frameworks without enterprise-level complexity.</li><li><a href="https://www.coolset.com/request-demo" rel="noopener noreferrer">Coolset</a> combines CSRD compliance, Scope 1-3 carbon management and supporting evidence attachments in one mid-market platform.</li></ul>

Considering Brightest for <a href="https://www.coolset.com/" rel="noopener noreferrer">sustainability management and compliance</a>? 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:

<ol><li>Coolset</li><li>Sweep</li><li>Greenly</li><li>Plan A</li><li>osapiens</li></ol>

## What is Brightest?

<a href="https://www.brightest.io/" rel="noopener noreferrer">Brightest</a> is a sustainability management platform designed to help companies manage their <a href="https://www.coolset.com/sustainability-glossary/esg" rel="noopener noreferrer">environmental, social, and governance (ESG)</a> 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 <a href="https://www.coolset.com/academy/csrd-eu-climate-regulation-explained" rel="noopener noreferrer">Corporate Sustainability Reporting Directive (CSRD)</a>, <a href="https://sdgs.un.org/goals" rel="noopener noreferrer">United Nations Sustainable Development Goals (UN SDGs)</a>, and more.

The platform also includes a double materiality feature, helping organizations prioritize <a href="https://www.coolset.com/academy/the-amended-esrs-what-has-changed-and-what-it-means-for-2026-csrd-reporting" rel="noopener noreferrer">European Sustainability Reporting Standards (ESRS)</a> 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.

<a href="https://www.trustpilot.com/review/brightest.io" rel="noopener noreferrer">Reviews</a> 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

<figure><img alt="__wf_reserved_inherit" loading="lazy" src="https://cdn.prod.website-files.com/63c7e16529317f2df4140ec0/68d3e3357ea9a7e9a2ad5885_66a89651612e05dbb43d3fd8_6686958612692e07ee448cdb_Coolset.webp" decoding="async" /></figure>

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.

<strong>Website</strong>: <a href="http://www.coolset.com/" rel="noopener noreferrer">www.coolset.com</a>

<strong>Best for</strong>: Mid-market companies

<strong>Key features</strong>:

<ul><li>Scopes 1-3 carbon footprint measurement</li><li><a href="https://www.coolset.com/compliance-management/csrd-compliance" rel="noopener noreferrer">Compliance with CSRD</a> and GHGP standards</li><li>Support for <a href="https://www.coolset.com/compliance-management/double-materiality-assessment" rel="noopener noreferrer">double materiality assessments</a></li><li><a href="https://www.coolset.com/compliance-management/auditable-reporting" rel="noopener noreferrer">Audit-ready reporting</a> capabilities</li><li>Smooth data integration</li><li>Marketplace for sustainable alternatives</li><li>Ability to <a href="https://www.coolset.com/academy/csrd-compliance-audit" rel="noopener noreferrer">attach supporting evidence</a></li></ul>

### 2. Sweep

<figure><img alt="__wf_reserved_inherit" loading="lazy" src="https://cdn.prod.website-files.com/63c7e16529317f2df4140ec0/68d3fcf2cdbb00ac348276d4_683dc744f85d39f001c57580_67249952d34dc8778a25b082_6686959dbf496d6e0c3bc132_Sweep.webp" decoding="async" /></figure>

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, <a href="https://www.coolset.com/sustainability-glossary/greenhouse-gas-protocol" rel="noopener noreferrer">Greenhouse Gas Protocol (GHGP)</a>, and more.

<strong>Website</strong>: <a href="http://www.sweep.net/" rel="noopener noreferrer">www.sweep.net</a>

<strong>Best for</strong>: Caters to companies of all sizes

<strong>Key features</strong>:

<ul><li>Carbon and ESG data monitoring</li><li>Supply chain sustainability management</li><li>Compliance with multiple disclosure standards</li><li><a href="https://www.coolset.com/academy/csrd-compliance-audit" rel="noopener noreferrer">Simplified audit preparation</a></li><li>AI-powered sustainability insights</li></ul>

### 3. Greenly

<figure><img alt="__wf_reserved_inherit" loading="lazy" src="https://cdn.prod.website-files.com/63c7e16529317f2df4140ec0/69401f394ac13288f791f3b4_66a89651612e05dbb43d3fd4_668fd31ec394b76a07a4a357_Greenly.webp" decoding="async" /></figure>

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.

<strong>Website</strong>: <a href="http://www.greenly.earth/" rel="noopener noreferrer">www.greenly.earth</a>

<strong>Best for</strong>: Small to mid-sized businesses

<strong>Key features</strong>:

<ul><li>Carbon footprint assessments</li><li>Life Cycle Assessments (LCA)</li><li>Supply chain decarbonization</li><li>Carbon reduction planning</li><li>Carbon offset solutions</li><li>Compliance with CSRD and SBTi certification</li></ul>

### 4. Plan A

<figure><img alt="__wf_reserved_inherit" loading="lazy" src="https://cdn.prod.website-files.com/63c7e16529317f2df4140ec0/68d3e3357ea9a7e9a2ad588d_66a89651612e05dbb43d3fd1_669903ac07dd51593acd268f_top-position-green-alternatives-competitors-plan-a.webp" decoding="async" /></figure>

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.

<strong>Website</strong>: <a href="http://www.plana.earth/" rel="noopener noreferrer">www.plana.earth</a>

<strong>Best for</strong>: Medium to large businesses with complex sustainability and risk management needs

<strong>Key features</strong>:

<ul><li>Carbon analysis tools</li><li>ESG compliance reporting</li><li>Science-driven target setting</li><li>Automated reporting features</li><li>Sustainability tracking for supply chains</li></ul>

### 5. osapiens

<figure><img alt="__wf_reserved_inherit" loading="lazy" src="https://cdn.prod.website-files.com/63c7e16529317f2df4140ec0/69429ffae4ebb2c02ac115be_683dc5ca86313fce7c7e595c_67249954d34dc8778a25b108_672498ee9ec6f0803f37c6e4_brightest-alternatives-competitors-osapiens.webp" decoding="async" /></figure>

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.

<strong>Website</strong>: <a href="http://www.osapiens.com/" rel="noopener noreferrer">www.osapiens.com</a>

<strong>Best for</strong>: Companies with complex supply chains

<strong>Key features</strong>:

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

## 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 <a href="https://www.coolset.com/request-demo" rel="noopener noreferrer">schedule a free walkthrough</a> with one of our product experts today.

<aside>

<a href="https://www.coolset.com/product-tour-compliance" rel="noopener noreferrer">Explore the product tour</a>

</aside>

## Related resources

<ul>
<li><a href="https://www.coolset.com/csrd" rel="noopener noreferrer">CSRD compliance</a></li>
<li><a href="https://www.coolset.com/product-tour-compliance" rel="noopener noreferrer">Product tour: CSRD compliance</a></li>
<li><a href="https://www.coolset.com/carbon" rel="noopener noreferrer">Scope 1, 2 &amp; 3 carbon management</a></li>
<li><a href="https://www.coolset.com/academy/the-amended-esrs-what-has-changed-and-what-it-means-for-2026-csrd-reporting" rel="noopener noreferrer">The amended ESRS: what has changed and what it means for 2026 CSRD reporting</a></li>
<li><a href="https://www.coolset.com/academy/csrd-under-omnibus-updated-scope-timelines-and-what-companies-should-do-in-2026" rel="noopener noreferrer">CSRD under Omnibus: updated scope, timelines and what companies should do in 2026</a></li>
<li><a href="https://www.coolset.com/academy/ecovadis-your-guide-for-a-platinum-score" rel="noopener noreferrer">EcoVadis: your guide for a platinum score</a></li>
</ul>