Ably
Free package for realtime messaging: 6M messages a month and 200 concurrent connections.
Dev Tools
What you get
Realtime pub/sub messaging with any Ably product, up to 6 million messages a month, 200 concurrent connections and 500 messages a second.
How to get it
Click Start free on ably.com/pricing.
The catch
Ably pitches the Free package as a proof of concept, and support is best effort; production SLAs start with Standard ($29/month plus usage).
From the official page · checked Oct 28, 2026