Is Elast alert available for Elasticsearch 7.9.3?

We are using Elasticsearch with Basic license. Kibana Alerts / Watchers are not available for the Basic License. Ours is a completely open source project, and we are trying to achieve alerting with open source options available.
Will Elasticsearch 7.9 support for Elastalert, if so which version of Elastalert?

Regards,
Pavan

I would recommend you ask the Elastalert community.

Kibana Alerts is available with the Basic license. See Subscriptions | Elastic Stack Products & Support | Elastic

You can use the index and log outputs for free.

Could you share the link to your project?