Slack is a US platform owned by Salesforce, storing all communications on American servers. Wire is a Swiss encrypted messaging platform used by European governments, with end-to-end encryption by default.
Incumbent Solution
Slack is a team messaging and collaboration platform owned by Salesforce, headquartered in San Francisco. Acquired by Salesforce in 2021 for $27.7 billion, it is the dominant enterprise messaging tool in the US market.
Slack ownership profileEU Challenger
Wire is a Swiss end-to-end encrypted messaging platform for enterprises and governments, headquartered in Zug. It requires no phone number, is GDPR-compliant, and is used by European government bodies as a secure alternative to Slack and Microsoft Teams.
Visit WireWire ownership profile| Metric | Slack | Wire |
|---|---|---|
| Headquarters | San Francisco, US | Zug, CH |
| Ownership | subsidiary · NYSE | private |
| Tax Domicile | US | CH |
| Ultimate Parent | Salesforce, Inc. | Wire Swiss GmbH |
| Data Hosting | mixed | EU |
| CLOUD Act Exposure | Yes ⚠️ | No ✓ |
| AI Trains on User Data | partial | no |
| GDPR | compliant | compliant |
| DSA Designation | standard | standard |
| Carbon Neutral | claimed | unknown |
| B Corp | No | No |
| Supply Chain | partial | opaque |
| Repair / Recycling | No | No |
Last verified . Sources: Slack on Wikidata, Slack website, Wire website, How we audit.
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