Here are the top B2B software review sites (what each is best for + quick tip). I included a source for each so you can check verification, scope and focus.

• G2 — largest general B2B software marketplace; huge review volume and quick product comparisons. (g2.com)
• Capterra — broad directory focused on SMB buyers with filtered Shortlists and vendor comparisons (part of Gartner Digital Markets). (capterra.com)
• GetApp — Gartner-owned comparison site that’s useful for side-by-side feature and pricing filters for SMB tools. (g2.com)
• Software Advice — offers one‑on‑one advisor help plus verified reviews (good if you want a quick shortlist matched to your needs). (softwareadvice.com)
• TrustRadius — long-form, in‑depth reviews and emphasis on review quality (favored for detailed buyer research). (about.trustradius.com, trustradius.com)
• Gartner Peer Insights — enterprise/IT-focused reviews submitted by verified IT professionals; good for large‑scale/enterprise purchases. (gartner.com)
• PeerSpot (formerly IT Central Station) — enterprise tech reviews and peer Q&A for infrastructure, security and IT ops decisions. (g2.com)
• Product Hunt — best for discovering new or early‑stage tools and launches (good for innovation scouting). (producthunt.com, en.wikipedia.org)
• StackShare — shows what tools engineering teams at real companies use (helpful for developer/toolchain decisions). (stackshare.io, techcrunch.com)
• Marketplaces/App stores (AWS Marketplace, Salesforce AppExchange, Azure Marketplace) — vendor-verified listings plus customer reviews inside cloud and platform marketplaces (useful for cloud-native/ISV integrations). (docs.aws.amazon.com, wired.com)

Quick tips for using review sites (sources):

• Cross-check multiple sites — different sites attract different reviewer types and verification methods (Gartner/Capterra/Software Advice publish their verification processes). (capterra.com, softwareadvice.com)
• Prefer verified reviewers and long, detailed reviews (they give context: role, company size, length-of-use). (gartner.com, about.trustradius.com)
• Watch dates and review recency (product changes rapidly) and be aware some platforms use nominal incentives to gather reviews — treat incentives as context, not disqualifiers. (getapp.com, capterra.com)

If you want, I can:

• Narrow this to the 3 sites best for your company size (startup / SMB / enterprise), or
• Pull live top-reviewed vendors in a specific category (CRM, HRIS, BI, etc.) from these sites.