Signal vs Slack

Which is more reliable, Signal or Slack?

Both Signal and Slack have similar community-reported activity over the past 30 days (0 reports for Signal, 0 for Slack; 0 vs 0 detected incidents). We don't probe either site continuously, so we report what users tell us — not a synthetic uptime score.

How does WebsiteDown compare Signal and Slack?

We aggregate two real signals for each side: user-submitted "down" / "working" reports tracked in 24-hour, 7-day, and 30-day windows, and detected incidents (continuous spikes flagged by our snapshot pipeline when reports cross a 3× baseline threshold). We don't fabricate uptime percentages or response times for sites we don't continuously probe.

Has Signal or Slack had any major outages recently?

Neither Signal nor Slack has triggered a higher number of detected incidents than the other in the past 30 days. The status pages for signal.org and slack.com list any current or recent incidents.

Where does this comparison data come from?

Two sources: (1) community reports submitted via the Report issue / Working buttons across our status pages, stored in our outage_reports table; (2) detected incidents from our snapshot pipeline, which flags anomalous spikes. We don't probe signal.org or slack.com from multiple regions on a schedule — continuous monitoring is a paid product for sites you own. This page reflects user-perceived issues only.