Details
PricingPaid
Category: Sales Engagement / Sequencing
OSS Maturity:Weak
Build note: Combine Mautic for email sequences with erxes for multi-channel engagement. No single OSS covers the full Outreach workflow.
Gap:No open-source project replicates full sales sequencing with multi-step cadences across email, phone, and LinkedIn.
More in Sales Engagement / Sequencing
Apollo.ioCommercial
Engagement + lead database + enrichment; generous free tier
@apollo.io/sdkPackage
Apollo.io API client
bull / bullmqPackage
Job queue for scheduling sequence steps
celeryPackage
Distributed task queue for Python sequence orchestration
ChatwootOpen Source
Omnichannel inbox; manage outreach responses
DittofeedOpen Source
Customer engagement; journey builder; email/SMS/push; MIT
emailjsPackage
Email sending from JS
erxesOpen Source
Unified marketing + sales engagement; plugin-based