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TeamSystem Acquires Sellsy: CRM & Invoicing Leader Joins Group

Sellsy acquired by TeamSystem

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Acquired

Sellsy

Software Development

Undisclosed amount

September 25, 2025

TeamSystem logo
Acquirer

TeamSystem

Software Development

A leading software solutions provider, TeamSystem, has acquired Sellsy, a French company specializing in CRM, invoicing, and pre-accounting software, for an undisclosed amount. This corporate acquisition marks a significant move for TeamSystem, integrating Sellsy's comprehensive business management suite into its portfolio. Sellsy, founded in 2009 by Frédéric Coulais and Alain Mevellec, has established itself as a vital collaborative tool for marketing, sales, and administrative teams, serving 22,000 customers with a workforce of 200 employees.

Sellsy offers an integrated platform designed to optimize business management and customer experience. Its suite of digital solutions covers sales management to boost revenue, streamlined invoicing and payment processes, targeted marketing campaigns for lead generation, and real-time treasury monitoring. Emphasizing innovation, simplicity, and security, Sellsy has primarily catered to small and medium-sized enterprises (TPE/PME) in France, priding itself on being a sovereign, secure, and intelligent French solution, with data hosted within the country and strict adherence to GDPR.

The acquisition is strategically poised to expand TeamSystem's market presence, particularly within the French SMB sector, and to enhance its array of business management tools. Sellsy's robust CRM, invoicing, and pre-accounting capabilities complement TeamSystem's existing offerings, allowing for the delivery of a more comprehensive and integrated solution to businesses. Expected synergies include the seamless integration of Sellsy’s innovative features, such as its electronic invoicing capabilities and AI integration, which will strengthen the combined entity’s ability to provide end-to-end digital transformation solutions.

This purchase aims to bolster the development of advanced tools that simplify operations, improve efficiency, and support growth for a broader client base. The combined entity is expected to leverage Sellsy's deep market understanding and user-friendly platform with TeamSystem's scale and resources, ultimately delivering enhanced value and more sophisticated digital solutions to businesses navigating modern operational demands.

Buying signals & intent

Our AI suggests Sellsy may be interested in:

Solutions CRM
Logiciels de facturation
Marketing digital
Automatisation des ventes
Gestion de trésorerie

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