Sellsy vs Teamleader (2026)

TL;DR

• Pick Sellsy if you're a French or French-speaking SMB that needs legally-compliant electronic invoicing, cash flow management, and marketing in one GDPR-native, France-hosted platform.
• Pick Teamleader if you're an agency, consultancy, or service firm in the Benelux/DACH region that bills for project work and wants quote-to-project-to-invoice in a single tool.

Pricing

Sellsy runs Standard at €35/user/mo, Evolution at €59, and Elite at €95, with a two-user minimum. Teamleader starts around €37/mo and scales by modules and users. Both price in euros and target European SMBs, so the headline numbers are close; the real cost difference comes from which modules you actually need — Sellsy's invoicing and cash flow depth versus Teamleader's project and time-tracking depth.

What each is really built for

Sellsy is, at its core, a commercial and financial platform: CRM and pipeline up front, but its standout modules are quoting, electronic invoicing, and cash flow management, all built to French regulatory standards. Teamleader is built around the agency workflow — it converts an accepted quote directly into a project with budget and time tracking, making it the stronger choice for teams that deliver billable work after the deal closes.

Invoicing and compliance

This is the clearest split. Sellsy treats invoicing as a first-class, compliance-driven module with French e-invoicing (and the regulatory roadmap that comes with it), making it a natural fit for businesses that must meet RGPD and French electronic-invoicing mandates. Teamleader invoices competently too, but its invoicing exists to close out projects rather than to serve as a standalone, regulation-grade billing engine.

Project and operations

Teamleader's project management is the differentiator: budgets, time tracking, and task management tied to each client and deal. Sellsy is lighter on project delivery and heavier on the financial and marketing side. If your team's value is created after the sale — designing, building, consulting — Teamleader's operational layer is the better fit. If your value is in the transaction and the cash that follows, Sellsy wins.

Integrations and data sovereignty

Both integrate with accounting tools, email, and the common European business stack. Sellsy makes a point of French data sovereignty — hosted in France with a cybersecurity and GDPR focus — which is a genuine differentiator for regulated French businesses. Teamleader integrates broadly across Benelux and DACH accounting and productivity tools and is the more familiar name in those markets.

Who should pick what

• French SMB with e-invoicing obligations → Sellsy. Compliance-grade invoicing and France-hosted data.
• Agency or consultancy billing project work → Teamleader. Quote-to-project with budgets and time tracking.
• Cash-flow-sensitive sales business → Sellsy. Marketing plus financial management in one.
• Benelux/DACH service firm → Teamleader, the regional default.

Bottom line

Both consolidate the sprawl of separate CRM, invoicing, and operations tools into one European platform, so the decision is about where your business creates value. Sellsy is the commercial-and-financial engine for French SMBs who care about compliant invoicing and cash flow. Teamleader is the agency operating system for teams whose work begins when the quote is accepted. Pick by your workflow's center of gravity — the transaction (Sellsy) or the delivery (Teamleader).