Slack
Slack is a cloud-based team communication platform developed by Slack Technologies, LLC, a subsidiary of Salesforce. Launched in 2013, Slack has become a core business unit within the Salesforce Customer 360 ecosystem. The platform aims to enhance productivity by replacing fragmented email and siloed tools with a unified, channel-based messaging system.
Company facts
| Founded | 2009 (17 years) |
| Latest funding | Merger / Acquisition |
| Employees | 1,800 |
| Headquarters | San Francisco, United States |
| Trusted networks on Proven | 159 investor, bank and government networks offer Slack to their members |
| Member offers on Proven | 1 |
| Member redemption clicks | 96,211 |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Discounts for Proven network members
25% Off eligible upgrades to Slack Pro and Business+
Members redeem through their investor or bank's Proven marketplace. Terms vary by network.
Competitors in Team chat
| Slack | Score in progress |
| Simpplr | Score in progress |
| Lark | Score in progress |
| Hucu.AI | Score in progress |
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.