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The business messenger that connects all employees!

GDPR-compliant High Secure Messenger with integrated file storage, videoconferences, calendar and survey tool

Made in Germany

More than 1 million users already trust stashcat®

  • Authority

    City of Cologne

    stashcat® is convincing with easy handling, simple design and 100% security.

  • Party
    Lower Saxony

    CDU Lower Saxony

    Digital administration made easy - with stashcat® for CDU Lower Saxony branded as "Messenger".

  • Medicine
    Healthcare service


    Germany's healthcare system is going digital! Communication across locations in over 80 on-call practices.

  • Authority

    Borken District Administration

    Simple communication without security concerns

  • Authority

    City of Verden (Aller)

    stashcat® offers a cross-departmental communication solution for the city of Verden.

  • Law
    Public Safety Authority

    Lower Saxony Police Department

    Faster manhunts and digital forensics for 25,000 police officers!

  • Transport

    AXTRA GmbH & Co. KG

    From the office to the driver to the customer! Flexible route planning and mobile accessibility in logistics.

  • Public Safety Authority

    Hytera Mobilfunk

    The perfect addition to voice radio!

  • Public Safety Authority

    Frequentis AG

    The control centre of the future is already a reality today!

  • Industry

    EGGERS Group

    Speeding up weapons recovery through digital and highly dynamic organisation!

  • Sports


    Professional and secure messenger for the exchange of important and personal data in professional sports.

  • Transport

    Regiobus Uhlendorff GmbH

    Direct line to the drivers - flexible exchange via messenger!

  • Consulting

    IT management consultancy Flo├č GmbH

    Renowned data protectionist Thomas Flo├č communicates simply and securely via High Secure Messenger.

This is how stashcat® works!

How much does stashcat® cost?

Up to 10 users

Always for free

1 year contract term

3,90 ÔéČ

3,90 ÔéČ net per user
first month for free

Sign up now

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On a monthly basis

4,90 ÔéČ

4,90 ÔéČ net per user
first month for free

More than 100 users?

Receive an individual offer!

Benefit from our flexible pricing models! You only need up to 10 users? Then register for free and use the full range of features! With more than 100 users we provide you with an individual offer. With less than 100 users but more than 10 you simply choose whether you want to book stashcat® monthly or for 1 year. The first 30 days are free for both options.

Focus on current topics

Complex infrastructures easily mapped - with stashcat®

Map even highly complex corporate structures easily in stashcat®. Use our high security standards and simple usability for your competitive advantage.

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GDPR Quick-Check

Avoid warnings: How do I determine whether a software or online service can be used in a GDPR-compliant manner? Use our whitepaper with 7-point checklist to check your software for GDPR compliance!

Learn more

The most important features at a glance


Exchange with each other in individual or group conversations with 2 to 10 participants.  They are always end-to-end encrypted and allow sharing of all data types.


Channels enable communication for your teams and groups, and are not limited to any number of participants. Create a channel for individual departments, teams, or the entire organization, even if there are 50,000 or far more participants. Administrators retain control over all communications by assigning read and write permissions.

File storage

With stashcat®, each user receives their own file storage in which files can be stored, accessed and used at any time. This means that every user always has their files available on every device, can share them with other users if they wish, and can also make them available to external users without a stashcat-account via a link.
In addition to this personal file storage, each conversation and channel has its own storage for shared files. Each file storage offers the possibility to create folders for a perfect structure of your files.

Guest accesses

Simply temporarily integrate customers and service providers into your Messenger for easy communication.

Folder Synchronization

Files are quickly distributed through automatic synchronization of local folders.


Distribute information via direct chat to groups of people without the risk of discussions.


Unsecure messengers access your private contact and address book! stashcat® shows you all contacts of your organization in an integrated contact book. Fully map your organizational structures in stashcat®. Existing organizational structures from mail distribution lists, phone chains or WhatsApp groups can be mapped into contact groups according to your needs. Contacts can be imported manually or synchronized using existing directory services such as LDAP or Active Directory. The user syncing function enables the synchronization and updating of contacts, even without a connected directory service.

End-to-end encryption

Industrial espionage, sabotage and data theft are threats to everyday work that must be taken seriously, but are still often underestimated in practice. For this reason, a particular strength of stashcat®, is GDPR-compliant, tap-proof and stable communication. Your chats and shared files are encrypted end-to-end.

User role

Define your own user roles with individual authorizations for your organization.

On Premise

If you wish, we also offer stashcat® as an on premise solution.

Masking Mode

For more data security for the content of your chats you can mask the content before leaving the application.


Appointments, polls for employees, votes or entire evaluations can be implemented easily with the survey module. Create surveys for individual users or entire channels. All addressed participants are notified directly when a survey is created and the results can be exported afterwards. Example: "Which messenger would you like to provide to your employees?" A: "The German market leader." B: "An insecure US service".


You can use the integrated stashcat® calendar module to map meetings, discussions, customer appointments or even company events. Appointments can be shared quickly across the organization or limited to individual groups, or can only be viewed privately by you. The calendar module contains all the usual functions, e.g. assigning and cancelling appointments, but also the synchronization with the calendar of your own smartphone or with your Outlook calendar.


Upon request, we adapt logo, colors, names and appearance completely to your corporate design.


If a mobile device management already exists, stashcat® can be distributed over it.


Connection to your Active Directory (LDAP) to synchronize existing user data.

Voice and video calls

You have a topic that is too complex to explain in a few words via chat? No problem! Call your conversation partners with one click. Via end-to-end encrypted voice or video call right within stashcat.

Video conferencing

Video conferencing allows exchange of up to 75 people in a closed, virtual room. Any stashcat® user can start a video conference using the integrated chatbot and share it via conversation, channel or even to selected external people. Participation in video conferences does not require a stashcat account.

stashcat® always accessible - apps for all platforms to download

With our apps you always have access to stashcat® during your everyday work, whether via our desktop application or the smartphone app. No matter where you are and if you wish, in your own personal corporate design.

stashcat auf allen Plattformen