SaaS Review Sites Still Work — If You Pick One Category

Software as a service (SaaS) review sites showed up 13 times across all three of our research pipelines. That’s the highest appearance count of any niche site idea we’ve tracked over the past year. Not newsletters, not local lead gen, not Amazon affiliate — SaaS review sites, across multiple independent research runs, keep surfacing near the top.

The conventional response when you pitch this is: G2 and Capterra have locked up the space. We thought the same thing the first few times we saw it surface in the data. Then we looked more carefully at what G2 and Capterra actually are, and we stopped thinking that.

G2 is a directory. It aggregates reviews from verified users and surfaces them in a standardized format. It does not have opinions. It does not tell you whether a tool is right for your specific use case. It does not explain which features are actually annoying to use day-to-day, or which competitor handles a specific workflow better. It can’t — that’s not what it’s built to do. A human-authored site that covers one narrow software category wins on exactly the dimensions G2 can’t compete on: editorial judgment, trust, and genuine depth. The comparison isn’t as lopsided as it looks from the outside.

Why SaaS affiliate is the best affiliate vertical, by the numbers

Physical product affiliate commissions run 1–8%. Course and info-product commissions run 4–10%, often one-time. SaaS affiliate commissions run 20–60%, and most of them are recurring — meaning you earn a percentage of the subscription every month the customer stays.

Here’s what that actually means in practice. A $500/month small and midsize business (SMB) software tool paying 30% recurring affiliate commission generates $150/month per referral. Not $150 once — $150 per month, every month the customer maintains their subscription. If you build 50 active referrals through that one affiliate partnership, you’re looking at $7,500/month from a single relationship. And that number grows automatically each renewal cycle without you doing anything.

Compare that to the math on an Amazon affiliate site. A $50 physical product at 4% commission is a $2 payout. One-time. You need to keep driving new buyers every month to maintain the same revenue. SaaS affiliate income compounds — Amazon affiliate income has to be re-earned continuously. This is why SaaS review site affiliate income shows up so consistently when we’re looking at return-on-effort calculations for content businesses.

The category selection framework

You can’t build a review site for “SaaS” broadly. You build a review site for one specific category of SaaS, and you become the most trusted source in that category. The category you pick matters a lot. Here’s the framework we use when we’re evaluating whether a category makes sense.

First: clear buyer intent. There needs to be a substantial population of people searching “best [X] software” and “[tool A] vs [tool B].” This is how review site traffic is generated. If the software category is too obscure, the search volume isn’t there. If it’s too broad, the established players dominate.

Second: high annual contract value (ACV). Companies pay meaningful affiliate commissions when their software is expensive. A $49/month tool paying 30% is $14.70/month per referral. A $500/month tool paying the same rate is $150/month. Target categories where the average tool costs $200–2,000/month for a small business seat — that’s the range where commissions are large enough to matter at reasonable traffic volumes.

Third: the right number of tools in the category. Somewhere between 5 and 20 is ideal for a solo operator. Two tools is too thin — you can’t build a comparison content strategy. Two hundred tools is too many — you can’t credibly review them all, and the category is probably already well-covered. The sweet spot is a category where there are enough options to warrant a dedicated comparison site, but not so many that you need a team to cover them.

Fourth: thin or outdated existing content. Search “best [category] software” and read the top results. If they’re all three years old, full of tools that no longer exist, or obviously written by people who’ve never touched the software — that’s your opening. The review content doesn’t need to be nonexistent. It needs to be bad enough that a site with genuine product experience would clearly rank above it.

Three categories that meet all four criteria right now, based on what we’re seeing in the data:

SMB cybersecurity. Endpoint protection, email security, and password managers for small businesses showed up 7 times in our cybersecurity-specific research runs. The affiliate programs are solid — 1Password, Malwarebytes, Proofpoint, and similar tools all pay recurring commissions. More importantly, the existing review content is overwhelmingly written for enterprise buyers. A site focused specifically on 5–50 person businesses would be serving a genuinely underserved buyer.

Legal SaaS. Contract management, e-signature, legal research, and matter management software for small law firms and solo practitioners. Lawyers buy expensive software and have specific, detailed requirements. The review content in this space is mostly outdated material that hasn’t kept up with the current tool landscape. And because legal software ACVs are high, affiliate commissions are meaningful even at low referral volumes.

Human resources (HR) tech for SMBs. Human resources information system (HRIS), payroll, and benefits administration tools for 10–200 person companies. High buyer intent — there’s a clear moment when a growing company needs to replace spreadsheets with real HR software. Expensive tools. And the honest comparison content for this segment is genuinely thin. Most review sites in this space are either enterprise-focused or so obviously affiliate-driven that they’ve lost reader trust entirely. (This category also has natural overlap with the AI workflow retainer opportunity — HR tech buyers are often the same SMBs who are misconfiguring their artificial intelligence (AI) tools.)

What “first-hand comparison” actually means — and why it’s the whole game

This is where we want to be blunt about the work involved, because most writeups on review sites skip this part.

You need to use the tools. Not summarize G2 reviews. Not aggregate user ratings. Actually use the software, run it through your real workflow, and document what works and what doesn’t. That means screenshots of your actual interface, not stock images from the vendor’s marketing page. It means noting the specific things that are annoying — the export that drops formatting, the search that times out over 500 records, the onboarding email sequence that buries the one thing you actually need to configure. Those details are what reviewers never mention because they’re writing from a demo, not from months of real use.

This is time-intensive to build. A serious first-hand review of one tool takes 10–20 hours if you’re doing it properly. Twenty tools takes several months of consistent work. That is exactly what creates the content moat. Once you have a library of 20 genuine, first-hand product reviews with real screenshots and workflow-specific observations, AI can’t replicate it — because it requires actual product access, actual workflows, and original judgment that didn’t exist in any training data. The effort that makes this slow to build is the same effort that makes it defensible once built. For more on building this kind of niche site from the ground up, we’ve written a full guide to niche site construction that walks through the mechanics.

The content strategy: three layers, in order

Layer one is category posts. “Best password managers for small businesses.” “Best HRIS for 50-person companies.” These target the high-volume comparison keywords and establish the site as a credible voice in the category. They also give you an organizing structure for building out the rest of the content.

Layer two is individual tool reviews. One page per tool, going deep on features, pricing, real-world performance, and who it’s actually right for. These pages serve buyers who’ve already narrowed to a shortlist and want more depth on a specific option. They’re also where you qualify for affiliate relationships — most software companies want to see dedicated review content before they approve you for their affiliate program.

Layer three is comparison posts — and this is where affiliate conversions actually happen. “1Password vs Bitwarden for Small Teams.” “Rippling vs Gusto for 30-Person Companies.” A buyer who is searching “[Tool A] vs [Tool B]” is not in the research phase. They’ve already done their research. They’re in the final decision phase, and they need one clear answer to push them over the line. These posts convert at meaningfully higher rates than category posts because the reader intent is purchase-ready. Build these last, but prioritize them once you have enough individual reviews to support them.

The math at 12 and 24 months

We track these as targets, not guarantees. Sites vary. Execution varies. Niche selection matters. But here’s what we consider achievable for a site with genuine category expertise and 50+ pages of real review content, maintained consistently.

Month 12: 5,000 monthly sessions. Revenue in the $2,000–$4,000/month range from a combination of affiliate commissions and display advertising. At this stage you probably have 5–10 active referrals generating recurring commissions and a long tail of one-time clicks. The display revenue is mostly noise — it’s meaningful context but not why you’re here.

Month 24: 20,000 monthly sessions. Revenue in the $8,000–$15,000/month range. The compounding effect of recurring SaaS commissions is visible at this point — referrals from Month 6 are still generating revenue in Month 24 because most SaaS customers stay. You’re also starting to get inbound affiliate inquiries from tools that want placement on a site with your traffic and authority.

The 12-month number requires consistent publishing — roughly 2–3 pieces per week of actual content, not thin filler. The 24-month number is what that compounding looks like if you stay consistent. These are achievable. They are not automatic.

The AI Overview question — and why it’s less of a threat here than elsewhere

AI Overviews are eating informational queries. “What is contract management software?” — there’s a reasonable chance an AI Overview handles that search and the click never happens. We think about this a lot when we’re evaluating content-based business models, and it’s a legitimate concern for a lot of niches.

It’s less of a concern for SaaS review site affiliate income specifically, for two reasons. First, the highest-value queries — the comparison and decision-stage searches — are not well-served by an AI Overview paragraph. A buyer choosing between two $500/month tools for their 40-person company is not satisfied by “Tool A is known for ease of use while Tool B offers more integrations.” They want depth, screenshots, workflow-specific context, and a clear recommendation from someone who’s actually used both. That’s a 2,000-word piece with real data and opinions, not a 3-sentence summary.

Second, first-hand review content is specifically what AI can’t replicate. AI Overviews synthesize existing web content. If your site contains original observations — things you noticed from months of actual use that don’t exist anywhere else on the web — that content can’t be summarized from somewhere else. It can only be cited from you. First-hand review depth is not just a quality signal. It’s the specific kind of content that’s most durable against AI disruption.

Budget for the software — and three other details that build trust

One line item most writeups skip: you have to pay for the tools you review. Plan on $200–500/month in software subscriptions during the build phase — some of it offset by free trials and startup tiers, but not all of it. We’d treat that as cost of inventory, not overhead. A review site that doesn’t pay for its own tools is a rumor site, and readers in technical categories can tell the difference fast.

Beyond the budget, three smaller details keep showing up in the data as outsized trust signals. First, write the switching-cost content nobody else writes. What does it actually take to migrate from Tool A to Tool B — the data export that mangles formatting, the re-onboarding, the two weeks of running both systems in parallel? That’s the question buyers care about most, and almost nobody answers it, because answering it requires having actually done it.

Second, put dates on your updates. A review revised in March 2026 beats a longer, better-written one from 2024 every time — both with Google and with readers. It’s visible proof that a human is still using the tools.

Third, publish your methodology. Your test criteria, your affiliate disclosures, and the occasional verdict that a popular product is bad. That last one matters more than it seems: readers in technical niches forgive inexperience faster than they forgive fakery, and a site that has never panned anything reads as a sales channel, not a review site.

Who this isn’t for

If you’re not willing to actually use the tools you review, don’t start. Writing thin review content based on vendor websites and aggregated user ratings is not viable in 2026. That type of content existed in volume five years ago and it’s been largely outcompeted. The only version of this that works now is genuine product experience translated into useful editorial opinion.

If you need revenue in under 9 months, the timeline is too long. The Month 12 target assumes you started publishing immediately and maintained a consistent pace. In practice, most people start slower than they plan to. A realistic timeline to meaningful affiliate income — $2,000+/month — is 12–18 months from a standing start, not 6.

And if you’re drawn to this because you want a low-effort passive income stream, this isn’t it. The passive income is real once the site is established and referrals are compounding — we write about that dynamic in the portfolio approach to small streams. But the first 18 months are active, time-intensive content production. The passivity comes later. Build that into your expectations before you start.

The opportunity is real. Thirteen appearances in our data isn’t noise. The commission structure is genuinely better than most affiliate categories. The defensibility of first-hand review content is real. So is the timeline and the work required to get there. Those things are true simultaneously — which is usually how the better opportunities work.