GG2 logo

G2 Unclaimed

Marketplace Platforms

www.g2.com

Chicago, IL

G2 is a software marketplace that helps buyers discover, compare, and review software.

G2 is a software marketplace that helps buyers discover, compare, and review software solutions. The platform aggregates user reviews, category pages, and product comparisons to support software decision‑making for buyers and vendors across numerous categories.

To empower software buyers with trusted reviews, comparisons, and insights to make informed technology decisions.

What we offer

Sell on G2

Empower your sales and marketing with dedicated access to G2's marketplace.

sell.g2.com

G2 Developer Portal

Empower developers with easy access to G2 API data.

my.g2.com/developers

G2 Deals

Discover software deals and exclusive offers easily through G2 Deals.

www.g2.com/deals

Market segments

Market size by segment

Growth potential (CAGR)

B2B SaaS marketplace

100 Billion USD88.3% CAGR

Marketplaces that connect enterprise and SMB buyers with product vendors for discovery, comparison, and transaction of subscription-based business applications.

Buyer research and product comparison

32.65 Billion USD7.6% CAGR

Capabilities that aggregate user reviews, category pages, and comparison tools to help buyers evaluate alternatives and make informed purchase decisions.

Vendor marketing and demand generation

7 Billion USD9.8% CAGR

Services and programs that help vendors increase visibility, engage in-market buyers, and convert demand through profile optimization, targeted outreach, and promotional offers.

Developer API and data integrations

22.5 Billion USD16% CAGR

APIs, developer portals, and integration support that enable access to marketplace data and embed product insights into third-party applications and workflows.

More information about our offering

Sell on G2

Sell on G2 is G2's vendor program that enables providers to promote and sell on the G2 marketplace. It offers dedicated paths for marketers, sales teams, services, investors, and developers, including profile enhancement, in-market buyer engagement, exposure to opportunities, real-time trend insights, and a developer portal for API data testing. Additionally, G2 for Services, a service program under Sell on G2, helps providers reach companies in need of services when they are ready to buy.

  • Expand Your Market Reach
    G2 for Services allows providers to effectively target and connect with organizations actively looking for their services, ensuring timely engagement and higher conversion potential.
  • Enhance Your Profile
    Boost your visibility and engagement with targeted in-market buyers through profile optimization.
  • Engage In-Market Buyers
    Utilize tailored strategies to connect with prospects actively looking for your solutions.
  • Expand Service Exposure
    Increase your reach to potential clients at the moment they are ready to engage.
  • Access Developer Portal
    Leverage the Developer Portal for seamless testing and integration.
  • Receive Trend Insights
    Stay informed with real-time data regarding software trends to make informed business decisions.

G2 Developer Portal

G2 Developer Portal provides developers with access to test and explore G2 API data. It facilitates integration and enables developers to utilize G2’s insights directly within their applications.

  • Gain Insights Through API Testing
    Developers can seamlessly test API endpoints to understand data structures, enabling effective integration and utilization of G2’s comprehensive software insights.
  • Utilize Comprehensive Resources
    Developers can access extensive documentation, tutorials, and API references to streamline development and maximize the efficacy of their integrations with G2.
  • Streamline Integration Processes
    The portal supports developers in easily integrating G2 API data into their own applications, enhancing functionality and user experience.

G2 Deals

G2 Deals is the Deals page on G2 where buyers and vendors can discover software offers, providing exclusive discounts and promotions for various software products.

  • Unlock Exclusive Software Discounts
    Gain access to exclusive discounts and promotional offers on a wide range of software products listed on G2, enhancing your purchasing power.
  • Compare Software Offers
    Review various software deals side-by-side, helping you make informed decisions based on features, benefits, and pricing.
  • Stay Informed with Latest Deals
    Receive instant notifications about the latest software deals and discounts, ensuring you never miss out on opportunities to save.

References

Methodology and sourcing behind the figures shown above.

B2B SaaS marketplace

Primary proxy is Labra’s cloud marketplace projection (cloud marketplaces to reach ~$100B in 2026 from $15B in 2023). I used that as a direct proxy for the B2B SaaS marketplace segment (marketplaces that connect buyers and vendors). Context from industry reports on the overall B2B SaaS market (Mordor, Fortune) — showing total B2B SaaS in the $390–497B range in 2025–2026 — supports treating marketplaces as a material sub-segment (~~20% of B2B SaaS in 2026 per Labra). The CAGR is the implied short-term CAGR from Labra’s 2023–2026 projection (≈88% annualized).

Buyer research and product comparison

Mapped the segment to the price-comparison/consumer comparison websites market. BusinessResearchInsights reports the price-comparison websites market size at USD 32.65 billion (2026) and projects growth to USD 61.41 billion by 2035 (CAGR 7.6%). A secondary industry source cites a similar CAGR (~7.2%), supporting a mid-to-high single-digit growth outlook driven by rising e‑commerce, digital buyer research, and comparison-tool adoption.

Vendor marketing and demand generation

Primary inputs are recent market reports for the demand generation software category, which serve as a close proxy for vendor marketing and demand-generation services. 360iResearch estimates the demand generation software market at roughly USD 7.6B (2026) with a ~9.8% CAGR to 2032; BusinessResearchInsights estimates ~USD 6.6B (2026) with ~11.3% CAGR to 2035. Given those software figures and overlap with services/programs, a conservative current market-size estimate for vendor marketing and demand-generation offerings is ~USD 7.0B, with growth potential around a 9.8% CAGR.

Developer API and data integrations

Estimates synthesized from multiple adjacent market reports in the provided search results (cloud API, API management, API marketplaces, and data integration). Source values range widely (cloud API reports from ~US$2.15B–US$64.8B depending on scope; API management and data-integration reports show mid-single-digit to low-double-digit billions). Because “developer APIs and data integrations” is a focused subset (developer portals, connectors, integration support, marketplace data access), the estimate uses a conservative aggregation and overlap-adjusted midpoint of the cited markets to reflect the segment’s addressable revenue (~USD 20–25B) and a blended growth outlook (mid-teens CAGR) driven by API-first adoption, API management and integration demand, and rising real-time data use cases.

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