- Agcert International, LLC - Offering greenhouse gas (GHG) emission reduction credits (ERCs), developed in an exclusive partnership with the USDA.
- Australian Climate Exchange - A membership framework designed to assist Australian industry in addressing the commercial, legal and regulatory risks associated with their greenhouse gas emissions, including emissions trading.
- Cantor Fitzgerald Environmental Brokerage - Information about market-based emissions trading programs for CO2, SO2 allowances, RECLAIM, NOx, SOx, greenhouse gases, and other environmental credits. Provides trading services in several countries, consultation to governments, and advice to industry.
- CantorCO2e - This organization helps to prepare corporations globally to understand and manage the impact of a greenhouse gas constrained future.
- Carbon Capital Markets - European company facilitating carbon emissions trading, emissions reduction, emissions compliance solutions and carbon finance as well as the buying and selling of carbon emission allowances.
- Carbon Clear - Gifts and products to fight greenhouse gas emissions and climate change by investing in projects that reduce global greenhouse gases.
- Carbon Management Group - Assisting leading companies to deliver superior shareholder value through the development and implementation of carbon management strategies based on world-class science and technology.
- Carbon Positive - Offering private investors forestry and sustainable energy projects which earn Kyoto carbon credits (CERs) for reducing greenhouse emissions and fighting global warming.
- Carbonmetrics - Tools for management of carbon emissions including: calculation of fuel switch point for coal and gas fired power generation, JI/CDM investment analysis, and CO2/MWh calculations.
- Carbon_Net - A national discussion group addressing Carbon Cycle, Global Warming, Sequestering Carbon and Mitigation Banking of Carbon Credits.
- CarbonSim Simulations and Software - Developers of green house gas emissions trading platforms, simulations, and software allowing companies to discover the impact of various trading rules. They also install carbon trading and management systems.
- Chicago Climate Exchange - The first U.S. voluntary pilot program for trading of greenhouse gases. News and information about program sponsorship, goals, members, and methods.
- Clean Air Action Corporation - Helps companies and communities achieve air quality goals by a combination of innovative technologies and emissions trading.
- The Clean Development Mechanism in Indonesia - The Forestry CDM is a partnership between developed country and developing country to reduce greenhouse gas emissions through afforestation and reforestation. This document explains how Indonesia plans to implement the carbon trading scheme.
- Climate Corporation - Provides EU Emissions Trading Services to assist companies affected by the EU Emission Trading Scheme (EU ETS) in selling or buying carbon credits. German based, site in English.
- Climate Safe Products - Reduce the effects of your own carbon dioxide auto emissions by paying for counter-measures.
- Consus - Consus, together with Evolution Markets LLC Group – purchase and sell CO2 allowances as part of EU's Emission Trading Scheme.
- coolAction.com - Enables individuals and organizations to purchase greenhouse gas emission reductions to combat global warming and benefit the environment.
- Emissions Trading Blog - A trader's newsletter on the emissions market place. Including news, prices, links and commentary on various carbon trading issues revolving around EU ETS, CDM, CER and JI instruments and projects.
- Entico Corporation Ltd - Publishes information products with a main focus on climate change technologies. Secures sponsorship for high-level international organizations, meetings and events.
- Evolution Markets Brokerage Services - Advisory and brokerage services for coal and environmental markets including emission allowances and emission reduction credits for SO2, NOx, VOC and greenhouse gas.
- Greenhouse Gas Trade Go-ahead - BBC article stating that the UK's greenhouse gas trading system could save millions of tons of carbon dioxide annually.
- International Carbon Bank and Exchange - Trade carbon credits after registering your car, home, renewable energy source, or other carbon-trading vehicle.
- International Emissions Trading Association (IETA) - An independent, non-profit organization dedicated to the establishment of effective systems for trading in greenhouse gas emissions by businesses.
- Lee International - Emissions Trading Consultants helping organizations benefit from emissions trading schemes with a focus on Clean Development Mechanism (CDM) projects in developing countries.
- Point Carbon - Aims to become a trusted supplier of decision-support services and market analysis for the emerging carbon market. This includes the newsletter The Carbon Market Analyst. [Requires Flash plugin.]
- State of Michigan's Air Emission Trading Program - Department of Environmental Quality of the State of Michigan's information on trading including rules, trading registry, and trading forms.
- TerraPass - Allows consumers to easily and affordably eliminate the environmental impact of driving their cars by purchasing carbon emission offsets.
- Vertis Environmental Finance - Trading, financial advisory and investment firm active in the emissions trading, carbon finance and environmental financial sectors, with focus on the EU Emissions Trading Scheme.
- World Bank Research - Global Carbon Trading Initiative research project and contacts.