7 Best G2 Alternatives for B2B Data

G2 is the world's largest B2B software review marketplace, with 3 million+ verified reviews and 90 million annual software buyers. The January 2026 acquisition of Capterra, Software Advice, and GetApp projects a combined reach of 200+ million annual buyers and nearly 6 million reviews across properties. Many B2B software buying decisions start on G2, and for good reason.

But G2 has three structural limits that lead growing go-to-market teams to look elsewhere. First, G2 Buyer Intent is bounded to activity on G2's own marketplace: if a target account researches vendor websites, reads analyst reports, consumes content on B2B publisher sites, or engages with channels outside G2, those signals stay invisible. Second, G2 does not provide B2B contact or company data -- teams that identify an in-market account on G2 still need a separate source to reach the right people. Third, G2's pricing is negotiation-dependent with no published rates; Professional-tier contracts start around $13,500/year and climb quickly once Buyer Intent packages are added (see G2 pricing breakdown and our full G2 review for detail).

This guide covers seven G2 alternatives that excel in these areas. Some teams use them alongside G2 to fill specific gaps. Others shift investment toward platforms that better fit where their buyers actually research, how they activate intelligence, and what their GTM stack needs to do.

What Is G2?

G2 is a B2B software marketplace and go-to-market intelligence platform that serves two audiences: software buyers who research, compare, and select technology, and software vendors who use it to build brand awareness, generate pipeline, and gather competitive intelligence.

Its core capabilities include G2 Profiles (vendor listings reaching 90 million annual buyers), Reviews and Review Generation (verified customer reviews with 42 data points per submission), Buyer Intent Data (nine signal types capturing in-platform research behavior including profile visits, pricing page views, and competitor comparisons), and Market Intelligence (a live data hub for competitive benchmarking and switching intelligence).

G2's strength lies in the specificity of its intent signals: when a buyer visits a competitor's G2 profile, compares pricing, or downloads a category report, those actions indicate active software evaluation. The Capterra acquisition adds roughly 110 million additional annual buyers across properties and raises the combined review count toward 6 million verified reviews.

That strength is also the limit. G2's intent is bounded to in-platform activity. Buyers who research through vendor websites, analyst reports, trade publications, or sales conversations leave no signal in G2's system. And G2 does not offer the contact data, predictive analytics, or native GTM activation that teams need to act on what they learn.

Looking for B2B data and AI-powered intelligence that goes beyond review-based signals? ZoomInfo combines 500M contacts and 100M companies with an intelligence layer that captures why deals move. Learn more about ZoomInfo.

How We Curated This List

After researching G2 and the alternatives market, we focused on platforms that address the three gaps G2 does not: broader intent signal coverage, B2B contact and company data, and full-funnel GTM activation. Each tool on this list leads in one of these areas. You might use them alongside G2 to fill specific gaps, or you might find a different platform better fits your primary go-to-market intelligence needs.

1. ZoomInfo: Best Alternative for B2B Data and AI-Powered GTM Intelligence

ZoomInfo is an all-in-one AI GTM Platform built on the industry's largest B2B data foundation. Where G2 provides review-based buyer intent from its marketplace, ZoomInfo delivers the full intelligence infrastructure that go-to-market teams need to find, win, and grow customers.

The platform is built on three layers. The data layer covers 500M contacts, 100M companies, 135M+ verified phone numbers, 120M direct-dial phone numbers, and 200M+ verified business email addresses, verified through a multi-source pipeline backed by 300+ human researchers achieving up to 95% accuracy on first-party data. In a Fortune 500 competitive RFP analyzing 25 million contacts across vendors, an independent consultant concluded that "no other competitor came even close."

The GTM Context Graph sits above the data layer as the intelligence and reasoning engine. It processes 1.5B+ data points daily, fusing ZoomInfo's B2B data with customer CRM records, conversation transcripts from Chorus (ZoomInfo's conversation intelligence engine), email interactions, and behavioral signals into a unified graph that captures not just what happened in a deal, but why it happened. G2 tells you which accounts are comparing vendors on its marketplace. The GTM Context Graph tells you why a specific deal is accelerating, what the CFO said on the last call that changed the trajectory, and which combination of signals historically predicts a closed-won outcome in your segment.

Universal Access completes the picture. ZoomInfo delivers intelligence through three native channels: GTM Workspace for sellers (prioritized accounts, AI-drafted outreach, deal execution in one place), GTM Studio for marketers and RevOps (audience definition, campaign orchestration, and pipeline measurement in natural language), and APIs and MCP for any custom agent, internal tool, or partner platform.

On intent specifically, ZoomInfo Intent tracks signals from 210 million IP-to-Organization pairings and 6 trillion+ new keyword-to-device pairings sourced monthly -- a much broader research landscape than a single marketplace. Guided Intent identifies topics historically correlated with deal success rather than requiring manual topic selection.

The results in practice: Smartsheet used ZoomInfo's data, Intent, and FormComplete to achieve an 84% increase in MQLs sent to sales, a 26% increase in opportunity rate, and a 59% increase in win rate (Smartsheet case study). Mendix improved its MQL-to-opportunity conversion rate 14x -- from under 2% to over 28% -- after deploying ZoomInfo CRM Enrichment (Mendix case study).

ZoomInfo has been named a Leader in the Gartner Magic Quadrant for ABM Platforms for two consecutive years, a Leader in the Forrester Wave for Intent Data Providers (Q1 2025), and the only vendor positioned in Gartner's Customers' Choice quadrant with the highest review volume and a 4.7/5.0 average rating.

ZoomInfo Pricing

ZoomInfo is free to start with consumption credits based on usage. ZoomInfo Lite provides a permanent free tier with access to the B2B database, 10 monthly export credits, and a Chrome extension. The full platform scales on a credits-based model as your usage grows.

Who Should Use ZoomInfo?

Choose ZoomInfo if your team needs the full GTM intelligence stack: verified contact and company data, cross-web intent signals, a reasoning layer that connects signals to deal outcomes, and access through the tools your sellers and marketers already use.

2. 6sense: Best Alternative for Predictive ABM and Multi-Source Intent Intelligence

6sense is an AI-powered revenue intelligence platform that identifies in-market accounts before they self-identify through form fills or demo requests. Where G2 surfaces buyer intent only when prospects research software on its marketplace, 6sense aggregates intent signals from across the digital buying journey to predict which accounts are entering buying cycles.

Key features include multi-source intent aggregation through Signalverse (processing over one trillion buying signals daily from proprietary B2B networks, first-party website signals, and six third-party intent providers including Bombora, G2, TrustRadius, and TechTarget), predictive buying stage identification using machine learning models trained on each customer's historical won/lost data, account-based advertising with a built-in B2B DSP, AI Email Agents that write personalized outreach and route qualified conversations to sales, and enterprise CRM and MAP integrations with Salesforce, HubSpot, Marketo, Eloqua, Salesloft, and Outreach.

Forrester's Q1 2025 evaluation awarded 6sense the highest scores in accuracy and noise filtering, buying cycle analysis, and insight generation.

Where 6sense differs from G2: G2 captures the moment a buyer is comparing vendors on its marketplace, which is valuable, but only a fraction of buyers self-identify through form fills. 6sense addresses the rest of the buying journey with signals that fire weeks before an account would appear in a marketplace-based intent feed.

6sense Pricing

6sense offers a free Sales Intelligence tier with 50 credits per month, company and people search, and a Chrome extension. The full ABM Intelligence platform (predictive models, Intelligent Workflows, AI Email Agents, advertising capabilities) is enterprise-priced with custom quotes.

Who Should Use 6sense?

Choose 6sense if your sales cycles are long (90+ days), involve multi-stakeholder buying committees, and most research happens before prospects fill out a form. 6sense is purpose-built for formal account-based marketing programs that need predictive intelligence, native advertising, and end-to-end orchestration in one system.

3. TrustRadius: Best Alternative for Review-Driven Buyer Intelligence With Market Context

TrustRadius is a B2B software buyer intelligence platform built around verified peer reviews and, following its June 2025 acquisition by HG Insights, enriched with technographic and market intelligence. TrustRadius differentiates through review quality: a 40% total rejection rate has resulted in over 69,000 rejected reviews since inception.

Key features include long-form verified reviews averaging over 400 words, buyer intent data enriched with HG Insights market intelligence combining second-party behavioral signals with firmographic, technographic, and spend intelligence, an Intent-Driven Leads program delivering ICP-qualified opted-in buyer leads exclusively to vendors, and content licensing for syndication across owned marketing channels.

Less than 20% audience overlap with other review sites means vendors already investing in G2 reach a new buyer population -- 54% mid-market and enterprise buyers, 73% of organic traffic visiting reviews, comparisons, and pricing pages. Cisco's VP of Integrated Marketing cited the Intent-Driven Leads program delivering 4,000 ICP-matched leads in less than two weeks, exclusive and not shared with competitors.

TrustRadius Pricing

The Customer Voice Package starts at $30,000 per product per year, covering review generation, lead capture, content licensing, sales enablement, and competitive reporting. Add-ons for Category Intent Data and Intent-Driven Leads require a demo request.

Who Should Use TrustRadius?

Choose TrustRadius if you're a mid-market or growing SaaS vendor where G2 Grid placement requires unrealistic review velocity, your buyers respond to substantive long-form peer reviews over high review counts with thin content, or you want to extend your review presence to an incremental buyer audience without duplicating G2 spend.

4. Bombora: Best Alternative for Pure Third-Party Intent Data From the Largest B2B Publisher Co-op

Bombora is a B2B intent data provider that positions itself as "a data company, not a platform." Founded in 2014, Bombora built a cooperative model where 200+ publishers contribute anonymized data from 5,500+ B2B media sites with 86% exclusive data sharing.

Key features include the largest B2B publisher data co-op with a proprietary JavaScript tag placed directly on publisher pages, 20,100+ B2B topic categories with NLP-based classification, a Company Surge Score benchmarking each company against its own historical baseline, and native integrations with 100+ platforms across the GTM stack.

Where Bombora differs from G2: G2's intent captures only in-platform activity. Bombora's Data Co-op captures intent from 5,500+ B2B websites -- analyst sites, gated research platforms, paywalled business publications, and vertical trade media -- processing 16.6 billion monthly content consumption events. Topic granularity spans 20,100+ categories covering specific pain points, regulatory drivers, and technology migrations that don't fit into software category buckets.

Consent is collected in 100% of captured events, with the Bombora tag sitting behind each Co-op member's Consent Management Platform and compliance with GDPR and the IAB Transparency and Consent Framework v2.2.

Bombora Pricing

Bombora operates a fully sales-led, custom-quote pricing model with no publicly listed prices. Products are sold modularly and pricing scales with intent topics monitored and data volume consumed. Bombora data is embedded inside 100+ partner platforms including 6sense, Apollo, HubSpot, Salesforce, and LinkedIn.

Who Should Use Bombora?

Choose Bombora if your GTM stack is already built and you need strong intent data flowing into it, your buyers research across a wide range of B2B media rather than concentrating on a single marketplace, or you need topic granularity that goes beyond software category bucketing to track specific business problems and technology migrations.

5. Clutch: Best Alternative for Small Businesses Sourcing Service Providers

Clutch is a B2B services marketplace that connects businesses with vetted agencies, consultancies, and development firms. Unlike G2, which catalogs software products, Clutch is built for the services buying journey.

Key features include AI-powered project matching with ClutchAI (trained on data from 260,000+ service providers and 10 years of buyer behavior), verified case-study reviews following a structured five-section format (Background, Challenge, Solution, Results, Ratings), 350,000+ vetted service providers across 2,000+ service categories, and budget and location-based filtering for SMB constraints. Clutch drives $2 billion+ in global service projects annually.

G2 is built around software product discovery with no relevant directory coverage for services procurement. For businesses that need to hire a web development firm, branding agency, or fractional CFO, Clutch is the appropriate destination.

Clutch Pricing

Basic listing is free and permanent. The Verified tier costs $499/year and adds a verification badge, unlimited case studies, website links, and dedicated support. Buyers use Clutch entirely for free.

Who Should Use Clutch?

Choose Clutch if you need to hire an external service provider for a defined project and want verified client reviews and case study evidence, or if you operate a B2B services business and want inbound lead generation starting at $499/year.

6. SourceForge: Best Alternative for Zero-Cost Vendor Listings and Organic Discovery

SourceForge is a B2B software marketplace and open-source hosting platform that allows vendors to maintain a full product listing, collect reviews, and appear across category and comparison pages at no cost.

Key features include completely free vendor listings with full profile management, review collection, and multimedia uploads; 116,900+ business software titles across 40+ top-level categories; nearly 20 million monthly visitors and 2.6 million daily downloads; and a Domain Authority of 93 with documented LLM citation frequency.

G2's free tier is skeletal: no promoted placement, no "Visit Website" button, no custom CTAs, and no buyer intent data. G2's Starter plan costs $2,999/year in year one and doubles to $6,000 in year two. SourceForge allows vendors to populate a full profile, collect unlimited reviews, upload case studies, and embed interactive demos at zero cost. For vendors in niche verticals where G2's review density is thin, SourceForge may be the only third-party review platform with meaningful category presence.

SourceForge Pricing

Completely free for the base tier. Paid tiers (PLUS, PREMIUM, AMPLIFY, PRECISION ABM, ENTERPRISE) add promoted placement, retargeting, buyer intent data, and advertising products. Paid tier pricing requires a sales conversation.

Who Should Use SourceForge?

Choose SourceForge if you need a credible third-party review presence but cannot justify G2's Professional-tier pricing, your product serves a niche vertical where G2's review coverage is thin, or you want to participate in AI search visibility without paying for premium content subscriptions.

7. PeerSpot: Best Alternative for Enterprise IT Buyers Needing Interview-Grade Review Depth

PeerSpot is an enterprise technology buying intelligence platform serving 886,000 enterprise tech professionals focused on cybersecurity, cloud infrastructure, data management, DevOps, and networking.

Key features include expert interview-based reviews averaging 600+ words with 95% collected through structured conversations, enterprise IT specialization with a minimum listing threshold of at least 10 enterprise customers, Buying Intelligence Reports analyzing buyer behavior across 1,000+ enterprise products, and exclusive AWS Marketplace review integration as the sole provider of verified first-party reviews.

Where PeerSpot differs from G2: while G2 relies on self-service form submissions, PeerSpot conducts phone or webcam interviews producing reviews that frequently exceed 2,000 words. Every review is written by an enterprise practitioner deploying the same class of product at comparable scale. PeerSpot's Zero Fake Reviews guarantee uses triple-authentication (LinkedIn profiles, community oversight, human editorial review).

PeerSpot Pricing

Buyer access is completely free. Vendor products are custom-quoted through sales conversations. Vendors can claim and maintain a basic profile listing at no cost.

Who Should Use PeerSpot?

Choose PeerSpot if your product is sold into enterprise IT, security, or infrastructure teams and you need to reach CISOs, security architects, and infrastructure directors, or you sell through AWS Marketplace and want reviews embedded directly in that procurement flow.

How to Choose the Right G2 Alternative

G2 serves different functions for different teams. Here is how to match the right alternative to your actual GTM need.

If your primary gap is intent signal coverage beyond a single review site: Bombora and 6sense are the strongest fits. Bombora captures signals from 5,500+ B2B websites through the largest third-party data co-op. 6sense aggregates signals from multiple intent providers (including G2, Bombora, and TrustRadius) and applies predictive models trained on your specific win/loss history. Both give you intent from where your buyers actually research, not just where some of them occasionally leave a G2 review.

If your primary gap is B2B contact and company data: ZoomInfo is the only platform on this list that provides full-funnel B2B data alongside intent signals. G2 tells you which accounts are in-market. ZoomInfo tells you who to call, what they care about, and what signals historically predict a closed-won outcome in your segment.

If your primary gap is GTM activation rather than data collection: ZoomInfo's all-in-one AI GTM Platform activates intelligence through GTM Workspace (sellers), GTM Studio (marketers and RevOps), and APIs and MCP (developers and agents). 6sense activates through its built-in B2B DSP and AI Email Agents. Both eliminate the data-routing step G2 requires.

If your primary goal is review presence and brand credibility: TrustRadius reaches a different buyer audience than G2 with higher per-review quality. SourceForge offers free vendor listings for teams that cannot justify five-figure review platform costs. PeerSpot is purpose-built for enterprise IT and security categories.

If you need to hire service providers rather than evaluate software: Clutch is the only purpose-built services marketplace on this list.

Most mature GTM teams layer multiple intelligence sources: G2 for review-based brand presence and late-stage marketplace intent, ZoomInfo for the data and intelligence layer, and Bombora or 6sense for early-stage cross-web signals. The question is not which single tool replaces G2, but which combination covers your buyers' full research journey.

Ready to go beyond review-based signals? ZoomInfo combines 500M contacts, cross-web intent, and GTM Context Graph intelligence in one platform.

G2 Alternatives Comparison

Frequently Asked Questions

Why are businesses looking for G2 alternatives?

G2's three primary limitations drive the search. First, intent signals are bounded to G2's own marketplace: if buyers research through vendor websites, analyst reports, B2B publisher sites, or any channel outside G2, those signals are invisible. Second, G2 does not provide B2B contact or company data -- teams identifying an in-market account on G2 still need a separate source to reach the right people. Third, pricing is negotiation-dependent with no public tier pricing; Professional plans start around $13,500/year and climb quickly with add-ons. Many businesses use G2 alongside alternatives rather than replacing it entirely.

What is the best overall G2 alternative?

ZoomInfo is the best alternative for teams that need full-funnel GTM intelligence: verified B2B contact data, cross-web intent signals via the GTM Context Graph, and activation across any tool or workflow. For teams specifically focused on ABM and predictive intent, 6sense is the strongest head-to-head alternative to G2 Buyer Intent. For teams focused on cross-web intent data as a standalone layer, Bombora covers the broadest publisher network.

Which G2 alternative is best for buyer intent data?

Bombora for pure third-party intent across 5,500+ B2B websites; ZoomInfo for intent fused into a complete GTM intelligence layer with contact data and activation; 6sense for predictive account identification using cross-channel signals and models trained on your win/loss history. Each has a different signal philosophy: Bombora is the largest co-op, ZoomInfo fuses intent into the GTM Context Graph for cross-signal reasoning, and 6sense applies predictive AI on top of multi-source aggregation.

How does ZoomInfo compare to G2 for go-to-market intelligence?

They solve different problems. G2 captures intent from buyers actively on G2.com -- strong for late-stage intent from buyers already in evaluation mode. ZoomInfo provides the underlying B2B data layer (500M contacts, 100M companies), cross-web intent signals via Streaming Intent, CRM enrichment, conversation intelligence via Chorus, and activation through GTM Workspace and GTM Studio. The GTM Context Graph processes 1.5B+ data points daily to reason across all signals together rather than surfacing them separately. Smartsheet used this combination to achieve an 84% increase in MQLs sent to sales, a 26% increase in opportunity rate, and a 59% increase in win rate. Most enterprise teams use both: G2 as one of many intent sources, ZoomInfo as the intelligence and activation platform.

Can I use G2 alongside these alternatives?

Yes. ZoomInfo and G2 have a published integration: G2 Buyer Intent signals flow into ZoomInfo Sales and Marketing, and ZoomInfo Suggested Contacts appear in my.G2. Most teams use G2 for review-site intent and brand presence alongside ZoomInfo's broader intelligence platform. Bombora and 6sense are similarly additive -- 6sense ingests G2 Buyer Intent as one of its six intent data partners. The strategic question is which platform anchors your intent strategy and which tools feed into it.

Is there a free alternative to G2?

SourceForge offers free vendor profiles for software listings with full profile management and unlimited review collection. ZoomInfo is free to start with consumption credits based on usage. Clutch has free basic listings for service providers. For full intent data and GTM intelligence, free alternatives are limited -- G2 Buyer Intent, Bombora, and 6sense all require paid contracts, though 6sense offers a free Sales Intelligence tier with 50 monthly credits.