Here are the top software-comparison and review sites you can use to research, compare, and evaluate software across categories—plus what each one’s best for:

1. G2 — Large volume of user reviews, rankings, feature comparisons, and grid/quadrant views. Great for SaaS and business software.
2. Capterra — Extensive directory and user reviews organized by category; easy side‑by‑side comparisons and pricing filters.
3. TrustRadius — In‑depth, vetted reviews and use‑case details; good for enterprise buying research and trustworthy reviewer context.
4. GetApp — Focused on cloud/SaaS apps with category rankings, feature lists, and buying guides (part of the Capterra/G2 family).
5. Software Advice — User-centric comparison tools and buyer guides; helpful for small‑business software selection and demos.
6. Gartner Peer Insights — Enterprise-focused analyst + customer reviews for large IT products (security, infrastructure, platforms).
7. Forrester / Forrester Wave (reports) — Analyst evaluations and vendor wave reports (paid/analyst content) for strategic enterprise decisions.
8. PCMag — Journalistic reviews and lab testing for consumer and business software, plus “best of” lists and buying advice.
9. CNET — Consumer-focused reviews, comparisons, and how‑to content (best for consumer apps and desktop software).
10. TechRadar — Editorial reviews and buyer guides for consumer and some business software.
11. AlternativeTo — Community‑driven list of alternatives based on user recommendations; great for finding replacements or open‑source options.
12. Product Hunt — Good for discovering new/indie software and early‑stage apps with community feedback.
13. SourceForge — Historically for open‑source software discovery and downloads; useful when you want open‑source alternatives.
14. StackShare — Developer-oriented comparisons focused on stacks, tools, and integrations used by companies.
15. Trustpilot — General product/service reviews including some software vendors (more consumer/business reputation focus).

Quick tips for using these sites

• Cross‑check across 2–3 sites: review volume and sentiment can vary.
• Prefer vetted/verified reviews and detailed use‑case notes (TrustRadius, G2).
• Use filters for company size, industry, deployment (cloud/on‑prem), and integrations.
• Beware paid vendor profiles—look for organic user reviews and recent entries.
• For enterprise buys, combine user reviews with analyst reports (Gartner/Forrester) and vendor demos/PoCs.

If you want, I can: recommend the best sites for a specific software category (CRM, HRIS, BI, security, etc.), or produce a side‑by‑side comparison matrix for 3 products you’re evaluating. Which would you like?