Esper pricing
5 plans read from espertech.com
Esper 9.0.0Free GNU GPL (GPL v2) Read 3 Oct 2026 · espertech.com
Esper Open SourceFree GPLv2 license · Java/JVM and .NET/NEsper · software supplied as-is Read 15 Oct 2026 · github.com
Esper Enterprise EditionPriced on request closed-source commercial product · horizontal scaling · REST services · GUI · JDBC/JMX · commercial support Read 15 Oct 2026 · espertech.com
EsperHAPriced on request high-availability add-on · state resilience · fast recovery · enterprise support Read 15 Oct 2026 · static.espertech.com
Esper supportPriced on request per year and per instance or per seatProduction support: Bronze, Silver, Gold · Development support: Developer Seat Read 3 Oct 2026 · espertech.com
In short
- Esper has a free plan (Esper 9.0.0).
- 3 plans are priced on request (Esper Enterprise Edition, EsperHA, Esper support).
What the alternatives costAll alternatives →
| Tool | From | Free plan | Free trial |
|---|---|---|---|
| Arroyo | $5/mo | Yes | No |
| Apache Druid | — | Yes | No |
| Estuary | $0.50/mo | Yes | Yes |
| Confluent Cloud | $385/mo | Yes | Yes |
| Apache Pinot | — | Yes | No |
| Apache Spark | — | Yes | No |
| Apache Flink | — | Yes | No |
| Apache Storm | — | Yes | No |