vendor lock-in → exit plan
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Best Solace PubSub+ alternatives

Ranked by migration effort. Open any path for a full cost model and plan.

1
RabbitMQ
Free OSS · open source
Low effort
~12 wks →
2
NATS
Free (open source) · open source
Low effort
~12 wks →
3
Redpanda
Free OSS / Enterprise · open source
Low effort
~12 wks →
4
Confluent Platform
Subscription / CKU · commercial
Medium effort
~15 wks →
5
TIBCO EMS
Per-core license · commercial
Medium effort
~15 wks →
6
Apache Kafka
Free (self-managed) · open source
Medium effort
~15 wks →
7
Apache Pulsar
Free (self-managed) · open source
Medium effort
~15 wks →
8
IBM MQ
Per-core + support · commercial
High effort
~18 wks →