Prospex as a Firmenhai alternative for Swiss B2B company data

Prospex is a Firmenhai alternative for teams that use Swiss company data to build prospect lists or feed their own sales tools. The choice depends on how you select companies and how often you need to revisit them. An agency running recurring campaigns has different requirements from a salesperson buying a list for one territory.

Firmenhai vs Prospex: how will you use the data?

Sources: Firmenhai's product page and FAQ, Prospex Market Builder and the Prospex list feed reference. Firmenhai also offers contact fields where available. Its public page does not establish the API or monitoring arrangements you could negotiate.

For an agency: carry the client's brief into the list

Consider an agency working for a supplier of industrial maintenance services. A useful brief might be: "Manufacturers in French-speaking Switzerland with production facilities in the region." Before building the list, agree whether distributors and engineering consultancies qualify. These choices determine which companies the client will accept.

In Market Builder, describe that market and review the company-level fit reasons. Keep a record of why a company belongs in the campaign. If the client changes the brief, those reasons help you decide which accounts need another look. Our prospect-list review guide provides a method for checking the resulting selection.

For contact enrichment, send the selected companies to your existing provider. The Clay integration guide shows how company data can enter that workflow. Evaluate contact coverage separately from company relevance: a suitable account still needs a reachable person.

For software builders: inspect the API and update path

The Prospex company API supports company search, individual company records and company signals. A saved list has JSON and CSV feeds containing company records with list reasons and recent events. The documentation describes pagination and daily row budgets so you can estimate the cost of repeated reads.

If your application follows a client's portfolio, start with list monitoring and its signal feed. Decide which changes you will show to the client and how you will link back to the underlying evidence. A recorded event gives the sales team something to investigate; it does not establish purchase intent.

For agencies serving several clients or businesses reselling lists, discuss the intended use with Prospex, including delivery volumes and redistribution terms. Technical access alone does not settle those commercial arrangements.

Compare the cost of a usable list

Ask each provider to price the same brief: for example, 500 companies in your territory, with the fields needed by your CRM and a defined update schedule. Include the time spent removing unsuitable records and the cost of adding contacts. For a one-off purchase, consult Firmenhai's current offer; for recurring data access, request a quote against your expected volume.

A free Prospex account lets you build one market and see its first ten companies after email confirmation. Paid access is required for full market access, exports and list monitoring. Confirm the allowance for your workflow before subscribing. The free preview helps you assess the product, but its first ten results are not a random quality sample.

Which option should you shortlist?

Firmenhai is worth considering for a defined file purchase. Try Prospex when your work involves qualifying companies against a client brief, keeping a portfolio under observation or integrating company data into your own application. Compare the same target segment in both before making a wider commitment.

For more options, see our Business Monitor comparison and Swiss company-address buying guide.

Build a free market , or discuss a company-data integration.