If you run an agency serving B2B SaaS clients, attribution is where most reporting conversations get uncomfortable. Sales cycles run 60–180 days, buyers touch a dozen channels before they ever book a demo, and the client's CRM says "Direct" for a deal you spent four months nurturing.

Last-click won't survive that. Here are the tools worth looking at.

1. Usermaven

Usermaven is the strongest all-round pick for agencies, mostly because it collapses two budget lines into one. You get marketing attribution and product analytics in the same platform, so you can follow a visitor from first ad click through signup, activation, and expansion without stitching tools together.

What makes it agency-friendly:

• Multi-touch models — first-touch, last-touch, linear, and position-based, so you can show a client the same deal through different lenses instead of arguing about one number.
• No-code event tracking — you can ship a client's tracking setup without waiting on their engineering backlog, which is usually the thing that kills week one.
• Separate workspaces per client — clean data separation and clean reporting.
• Privacy-friendly and cookieless — useful when clients have EU traffic or a legal team with opinions.
• AI-generated insights — surfaces which channels and campaigns actually move activation, not just traffic.

For most agencies handling a portfolio of SaaS accounts, it hits the right balance of depth and setup speed.

2. Dreamdata

Built for revenue attribution in longer, sales-led motions. Deep CRM integration and solid account-level journeys. Best when your client already has a mature RevOps function and a real HubSpot or Salesforce setup to plug into.

3. HockeyStack

Strong B2B revenue analytics with account-level journey mapping and campaign ROI reporting. Aimed at bigger budgets — great for enterprise clients, usually overkill for a $2K/month retainer.

4. Factors.ai

Combines attribution with account identification, so you can see which companies are researching your client before they convert. Handy if your agency also runs ABM or intent-based outbound.

5. Ruler Analytics

Closed-loop attribution with call tracking built in. Worth a look for clients whose pipeline still runs through phone calls and form fills rather than pure self-serve signup.

6. Windsor.ai

Less a reporting tool, more a connector layer. Pulls ad and analytics data into BI tools or data warehouses. Good if you've already built custom dashboards and just need clean pipes.

How to choose

Ask three questions before you commit:

1. Sales-led or product-led? Product-led clients need product analytics alongside attribution. Sales-led clients need CRM depth.
2. Who's implementing? If you don't control the client's dev resources, prioritise no-code setup.
3. Does it scale across accounts? Per-client pricing that made sense for two clients can wreck your margin at fifteen.

Start with one client, prove the model, then roll it out across the portfolio.