| Name | Stage | Founded |
|---|---|---|
| Ably | Series B | 2016 |
| Aerospike | Series E | 2009 |
| CData | Series C | 2010 |
| ClickHouse | Series B | 2021 |
| Confluent | public | 2014 |
| DeltaStream | Series A | 2020 |
| Ditto | Series A | 2018 |
| Imply | Series D | 2015 |
| LiveKit | Series A | 2021 |
| Momento | seed | 2021 |
| PartyKit | seed | 2023 |
| PubNub | Series E | 2010 |
| Pusher | acquired | 2010 |
| Redis | Series G | 2011 |
| Redpanda | Series C | 2019 |
| Streamkap | seed | 2022 |
| WarpStream | acquired | 2017 |
| Name | Average output | Total all time |
|---|---|---|
| ClickHouse | 6.6 | 393 |
| Confluent | 5.4 | 774 |
| Redis | 4.2 | 759 |
| Aerospike | 3.2 | 647 |
| CData | 3.0 | 582 |
| Ably | 3.0 | 357 |
| PartyKit | 0.6 | 23 |
| LiveKit | 0.5 | 29 |
| WarpStream | 0.2 | 25 |
| DeltaStream | Not yet available. | Not yet available. |
| Ditto | Not yet available. | Not yet available. |
| Imply | Not yet available. | Not yet available. |
| Momento | Not yet available. | Not yet available. |
| PubNub | Not yet available. | Not yet available. |
| Pusher | Not yet available. | Not yet available. |
| Redpanda | Not yet available. | Not yet available. |
| Streamkap | Not yet available. | Not yet available. |