For an agency managing multiple client websites, the best analytics tool needs to do more than collect traffic. It must let clients see the right reports, keep unrelated clients separate, and make ownership and offboarding manageable.
This guide compares Databuddy, Plausible, Fathom, Matomo and Umami using their documented capabilities. Databuddy publishes the guide and is included in the comparison. It is a shortlist for evaluation, not a claim that one provider fits every agency.
Compare tools around your client workflow
| Tool | Good reason to evaluate it | Check before committing |
|---|---|---|
| Databuddy | Conversions, events, errors and performance in one workflow | Workspace membership, client boundaries and the handover process |
| Plausible | Focused website reporting with team and guest access | Selected-plan allowances and roles for each client |
| Fathom | Shared client dashboards and scheduled email reports | Site allowances, sharing controls and ownership transfer |
| Matomo | Hosting control and extensive reporting | Configuration, maintenance and paid plugin requirements |
| Umami | Open-source deployment or a hosted team workspace | Team visibility, member roles and selected-plan coverage |
1. Databuddy: connect client conversions with technical issues
Databuddy combines traffic, custom events, goals and funnels with error and Web Vitals reporting. It is worth evaluating when an agency owns both marketing results and website implementation, and needs to investigate why a form or conversion path underperforms.
Use a separate website entry for each client site. Decide whether the client should own its organization from the outset, then check access using a synthetic client account. Organization membership is a meaningful access boundary; do not assume that putting client sites in the same organization provides the separation you want.
Databuddy's pricing is based on event allowances. Estimate collected events across the intended setup, including diagnostics, before quoting a fixed monthly analytics cost to a client. Confirm the required reporting and export workflow rather than promising white-label dashboards or scheduled report delivery without checking that capability.
Its tracker avoids analytics cookies but uses browser storage. Review the collection and consent guidance with the client's actual configuration.
2. Plausible: focused reporting with roles and guests
Plausible's team documentation describes membership, roles, subscriptions and API keys. Its users and roles guide covers team members and external guests.
Evaluate it when clients mainly need traffic sources, top pages and website conversions. Use its documented role and guest model to confirm who can view data, change settings and administer billing. Check plan-specific access and feature limits before deciding how to group client work.
3. Fathom: client dashboards and routine email reporting
Fathom's agency offering explicitly addresses multiple client websites, shared dashboards and scheduled email reports. It is worth testing when the agency wants a focused report clients can read between meetings.
Its sharing documentation describes viewer links with passwords, expiry and revocation. Confirm that a client link exposes only the intended site, and include revocation in your offboarding process. Check the current site and pageview allowances against the combined client roster.
4. Matomo: control over hosting and report configuration
Matomo offers cloud and on-premise deployment with broad analytics reporting. It is a candidate when a client requires hosting control or a more extensive reporting configuration.
Price the exact edition, plugins and operating commitment. Self-hosting can make infrastructure ownership explicit, but the agency then needs to define who patches the service, monitors capacity and restores backups. Review its privacy settings per deployment rather than treating the hosting location as the whole privacy assessment.
5. Umami: team workspaces with a self-hosted option
Umami's team workspaces group websites and users with role-based access. Its documentation notes that websites in a team are visible to team members according to their role.
Use that visibility model when deciding how to separate clients. A single team for the agency's staff is not automatically the right place for every client's own login. Check the hosted plan for website and member allowances, or account for maintenance if self-hosting. The team management guide documents website transfers between personal accounts and teams the user owns.
Test the full client lifecycle
Before standardizing on a tool, run a small synthetic onboarding and offboarding exercise:
- Create two test clients and a separate site for each.
- Give one client the intended access and confirm it cannot see the other client's data or settings.
- Define and verify a meaningful outcome, such as a confirmed quote request.
- Produce the report you intend to deliver, including the reporting period and timezone.
- Test removing agency access, revoking shared links, exporting required data and handing ownership back according to the provider's documented process.
- Record who pays, who approves collection changes, and who maintains the privacy notice and consent configuration.
This exercise reveals access and handover problems that a feature list cannot. It also gives you a concrete scope for the analytics service you sell.
For a WordPress client, use the installation walkthrough. For campaign reporting, follow the UTM measurement guide and distinguish campaign arrivals from verified conversion attribution.
For the cost of a small client rollout, compare free analytics options against the expected event volume. The campaign links documentation covers destinations and the separate click counts recorded for each client campaign.