Is there any other open source data orchestrator tool simpler than airflow to run airbyte as well as dbt end to end.

Dagster and Prefect are other orchestration tools like Airflow.

and one more question i would like to use dbt for history. So, sync mode with incremental just deduped is possible in airbyte for Postgres?

No, only dedup + history. You can use the first time to generate the sql files and edit the sync mode as your will