messaging
Signal vs Slack
Slack started first, in 2013, 1 year before Signal.
Why Signal lasted
- The protocol is the gold standard. WhatsApp and others borrowed it. That is a weird kind of win.
- A nonprofit that does one app. The constraint is the pitch.
Why Slack lasted
- It turned IRC-for-work into a company default and made search across chat a reason to stay.
- Salesforce bought it and the login did not vanish, which is the adult form of surviving.
Questions
Which is older, Signal or Slack?
Slack started first, in 2013, 1 year before Signal.
How long has Slack been running?
Slack has been up 13 years 34 days, since 2013-08-14.
How long has Signal been running?
Signal has been up 12 years 50 days, since 2014-07-29.
More messaging comparisons
same category
Discord vs ICQDiscord vs SignalDiscord vs SkypeDiscord vs SlackDiscord vs TelegramDiscord vs WhatsApp
Dates are founding dates from the written entries. Play which is older, or see the oldest messaging still running.