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Stacksync

stacksync.com

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Spec score 7.5 #18 of 29 in Reverse ETL Tools

What it is

Stacksync synchronizes CRM, ERP, SaaS, database, and warehouse data in real time, with two-way sync and configurable write direction. It lists more than 1,000 production-ready connectors, and almost all CRM, ERP, database, and warehouse connectors are bidirectional by default. Some sources, including billing event streams and observability platforms, are read-only by design. Workflows can react to record changes and be configured in a builder or as YAML/JSON files. Event queues process system events in order and support automatic retries. Stacksync AI agents can read and write the live data its syncs maintain. It offers API, self-hosted, and web options, with advanced transformations and reverse sync. The company says it encrypts data in transit and at rest and keeps no copy of records in the sync path after writes land. Starter costs $1,000 a month billed annually; a 14-day free trial is advertised without a credit card. Starter includes one active sync and 50K records in sync.

Spec sheet

What it does
Stacksync synchronizes CRM, ERP, SaaS, database, and warehouse data in real time, with two-way sync and configurable write direction.Read 3 Oct 2026 · stacksync.com
Intended users
Stacksync describes Starter as intended for startups and growing teams, Pro for high-performance teams building end-to-end workflows, and Enterprise for large data teams needing advanced security and support.Read 3 Oct 2026 · stacksync.com
Integrations
Stacksync lists 1,000+ production-ready connectors across CRMs, ERPs, databases, warehouses, and SaaS; almost all CRM, ERP, database, and warehouse connectors are bidirectional by default.Read 3 Oct 2026 · stacksync.com
Compliance
The security page lists SOC 2 Type II, ISO 27001, HIPAA, GDPR, CCPA, and DPF; SOC 2 Type II, ISO 27001, HIPAA, and DPF are available on Pro and up, while GDPR and CCPA are listed on every plan.Read 3 Oct 2026 · stacksync.com
Support
Every plan includes documentation, the Slack community, and email support; dedicated Slack support starts at Pro, while email, chat, and phone support up to 24/7 starts at Managed Pro.Read 3 Oct 2026 · stacksync.com
AI agents
Stacksync AI agents can read and write the live data maintained by its syncs.Read 3 Oct 2026 · stacksync.com
Connector limits
Some read-only sources, including billing event streams and observability platforms, are source-only by design.Read 3 Oct 2026 · stacksync.com
Data security
Stacksync states that it encrypts data in transit with TLS 1.2+ and at rest with AES-256, and keeps no copy of records in the sync path after writes land.Read 3 Oct 2026 · stacksync.com
Event queues
Its event queues process system events in order and support automatic retries.Read 3 Oct 2026 · stacksync.com
Security limits
MFA is included on Pro and up, SSO and SCIM are Enterprise-only, and on-premise deployment is Enterprise-only.Read 3 Oct 2026 · stacksync.com
Trial and POC
The homepage advertises a 14-day free trial with no credit card, while pricing says guided proof-of-concept terms, including length and price, are available on request.Read 3 Oct 2026 · stacksync.com
Workflow automation
Workflows can trigger actions on record changes and be configured in the builder or as YAML/JSON files.Read 3 Oct 2026 · stacksync.com

Plans and prices

Starter $1,000 a month annually 1 Active Sync · 50K records in sync · 3 collaborators · 1 day log retention · Community support Read 3 Oct 2026 · stacksync.com
Pro $3,000 a month annually 3 Active Syncs · 1M records in sync · Unlimited collaborators · 7 day log retention · Dedicated Slack support Read 3 Oct 2026 · stacksync.com
Managed Pro $4,200 a month annually 3 Active Syncs · 1M records in sync · Dedicated US-based engineers · Multiple processing regions · 24/7 incident response Read 3 Oct 2026 · stacksync.com
Enterprise Priced on request annually Unlimited syncs · Custom records · 30 day log retention · SSO & SCIM · 24/7 support hotline · SLAs Read 3 Oct 2026 · stacksync.com

Every Stacksync plan and price →

Strong points and limits

Strong points

  • Real-time two-way sync with configurable write direction
  • More than 1,000 production-ready connectors
  • Event queues support automatic retries
  • AI agents can read and write synced live data
  • 14-day free trial requires no credit card

Limits

  • Starter costs $1,000 a month billed annually
  • Some source connectors are read-only
  • SSO and SCIM are Enterprise-only

Who it suits

Stacksync suits teams syncing data across business systems that need real-time, bidirectional flows and configurable workflows. Starter is described for startups and growing teams; larger plans target higher-performance or large data teams.

Verdict

Stacksync combines real-time synchronization, workflow automation, queues, and AI agents across many connector categories. The listed Starter price is $1,000 a month billed annually, and some sources are intentionally read-only.

Where Specifiction places it

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