Stacksync is a real-time, bidirectional data synchronization platform that connects CRMs, ERPs, databases, data warehouses, and 200+ SaaS apps without code. Engineers use it to replace stitched-together MuleSoft, Fivetran, Kafka, and Zapier deployments with a single platform that handles sync, workflow automation, event queues, and EDI on real-time infrastructure.

How does Stacksync differ from Zapier, Workato, MuleSoft, and Fivetran?

Zapier and Workato are workflow tools, per-step pricing, generic orchestration, minutes of latency. Fivetran is unidirectional batch EL into a warehouse. MuleSoft is enterprise iPaaS with month-long implementation cycles. Stacksync is streaming and bidirectional: direct connections to source change feeds, sub-second latency, per-connection pricing, and 200+ pre-built connectors that handle custom fields and objects out of the box. Most customers replace a stack of 3 to 5 tools with Stacksync.

Is Stacksync real-time?

Yes, sub-second latency for systems that expose change feeds (Salesforce CDC, HubSpot webhooks, Postgres logical replication, MySQL binlog, MongoDB change streams, DynamoDB Streams, SQL Server CDC). For polling-based sources without native change events, Stacksync polls every 30 to 60 seconds, still 100x faster than batch ETL. Workflow triggers fire on the same streaming infrastructure.

How much does Stacksync cost?

Pricing is usage-based and starts at $1,000/month for Starter (1 active sync, 50K records in sync). Pro is $3,000/mo (3 syncs, 1M records), Managed Pro $4,200/mo (dedicated US engineering team), Enterprise is custom. You pay for active syncs and records in sync; updates to synced records are unlimited and free. Volume discounts apply at scale. Full breakdown at stacksync.com/pricing.

Is Stacksync secure and compliant?

Yes. SOC 2 Type II audited, ISO 27001 certified, HIPAA-aligned for healthcare workloads, GDPR and CCPA compliant, EU-US Data Privacy Framework registered. Customer-managed encryption keys via AWS or GCP KMS, IP allowlisting, region-pinned data processing (US, EU, APAC), full audit logs, and 24/7 incident response on enterprise plans. The full posture is at stacksync.com/security.

Which systems does Stacksync connect to?

Stacksync ships 200+ production connectors covering CRMs (Salesforce, HubSpot, Dynamics, Zoho, Pipedrive, Attio), ERPs (NetSuite, SAP, Workday, Oracle, Sage), databases (Postgres, MySQL, MongoDB, DynamoDB, Oracle, SQL Server), data warehouses (Snowflake, BigQuery, Databricks, MotherDuck), marketing/support tools (Intercom, Zendesk, Marketo), EDI partners (10,000+ via the EDI directory), and the long tail of business SaaS. Full catalog at stacksync.com/connectors.

Do I need to write code?

No. Stacksync is no-code by default. Connecting a system takes 2 to 5 minutes via OAuth or API key. Field mappings are drag-and-drop with built-in transformations and lookup tables. Workflows use a visual editor. For advanced cases you can drop into JavaScript or Python in a workflow step, but only when you want to, not because you have to.

How long does it take to go live?

Days, not months. Most customers go from kickoff to production sync within 1 to 4 weeks depending on scope. Simple CRM-to-CRM or CRM-to-database deployments often finish in 3 to 5 business days. Complex multi-system migrations (replacing MuleSoft, Boomi, or Workato) typically take 6 to 12 weeks with our professional services team. Stacksync commits to a specific go-live date during the kickoff call.

Integrations & AI Genies for cross-system processes

Two-way sync across your entire stack before your screen refreshes.

Changes made in one platform automatically update across all connected systems in real time, eliminating data silos and reducing errors.

Book a demo Start now

We'll build your first integration on the call. SOC 2 · ISO 27001 · HIPAA.

Built for teams where self-serve, reliability and scale matter

Case study

Migrated from Mulesoft

Case study

Migrated from Celigo

Migrated from Heroku Connect

Migrated from Matillion

Case study

Migrated from Fivetran

Case study

Migrated from Celigo

STACKSYNC FEATURES

Everything real-time two-way sync needs.

Schema drift, API rate limits, failed records and sync cadence are the things that break integrations in production. Stacksync handles each of them by default, so your two-way syncs keep running.

SCHEMA

Schema changes
that never break a sync.

When a field is added, renamed, or retyped at the source, Stacksync detects it and adapts the sync automatically — no pipeline rebuilds, no overnight breakages.

Handle schema drift automatically

01 New columns and objects are picked up and mapped on the fly
02 Type and structure changes propagate without manual remapping
03 Backward-compatible by default, so production keeps flowing

Schema drift detected Auto-propagated

1,432Schema changes
auto-propagated

14Connected systems
kept in sync

0Breaking changes
shipped

Latest change · Account

Salesforce · 4 fields · just now

+ shipping_region varchar(64) ADDEDMapped

+ pos_location_id int8 ADDEDMapped

~ customer_namecontact_name RENAMEDMapped

⇄ amount intdecimal(12,2) RETYPEDMapped

All 4 changes applied — sync uninterrupted 0 manual remaps

Same behavior on every connector 1,000+ connectors

1,000+

RATE LIMITS

Respect every API limit,
automatically.

Stacksync paces every call to each system's real rate limits — batching and backing off so you sync at full speed without ever getting throttled or blocked.

See smart rate limiting

01 Per-system limits honored, from NetSuite's threads to Salesforce's daily caps
02 Adaptive batching and backoff keep throughput high under load
03 No 429s and no banned integration users, even on the heaviest days

API rate limit Per connection

aleem_local_schema Postgres

Connection details

Connection ID

dac6dfc3-3fdb-4f1c-9d1e-6d8f9c37c1c9

Open my connection

Rate limit

Rate

Frequency

per second ×

Save changes Cancel

Advanced options

Delete Protection

Change Data Capture Method

Triggers Logical Replication

App ID: ec35cf21

ISSUE MANAGEMENT

Every sync issue,
surfaced and resolvable.

Failed records don't vanish into logs. Each one lands in a dead-letter queue with full context, ready to inspect, fix, and replay in a single click.

Explore issue management

01 Every failure captured with its payload and error — never silently dropped
02 Triage from one dashboard instead of digging through log files
03 Fix the root cause and replay, individually or in bulk

Sync issues 3 errors 1 retrying

Every failed record is captured, explained, and replayable — nothing is silently dropped.

Open issues · last 30 days 4 of 4

Snowflake USERS 57014 Account suspended — no payment method on file. Retry

Salesforce Account 23505 Duplicate external_id on upsert (unique constraint). Retry

HubSpot Contacts 429 Rate limit hit — backing off, auto-resuming. Resolving

NetSuite SalesOrder 401 Token expired — reauthorize the connection. Fix auth

Records held in order — replay when the issue clears 0 data lost

SYNC FREQUENCY

Sync as fast as you need,
per object.

Run critical objects in real time and high-volume ones on a schedule. Set the cadence per connection and per object instead of one rigid global interval.

Set custom frequencies

01 Real-time CDC for the data that can't wait
02 Scheduled or interval syncs for bulk and low-priority objects
03 Tune frequency per object to balance freshness against cost

Sync frequency Per sync

Advanced sync settings

Data sync frequency

In real-time

Search connectors

Microsoft Dynamics 365

Amazon Seller Central

AWS Aurora PostgreSQL

Twilio

Browse the full catalog →

Connector agent

Don't see your app? Paste a URL.

Fetched OpenAPI spec

47 endpoints discovered

Inferred auth, OAuth 2.0

Authorization code flow

Generated 12 trigger templates

customer.created · order.paid · …

Validating against sandbox

running 24 test calls

…

Generate connector

E-Commerce · DTC · Provo, UT

Black Friday at scale, without losing a single order.

Just Ingredients runs a high-volume DTC business on a stack that has to absorb traffic spikes without missing a beat. Stacksync moves orders, customers and inventory between Shopify, NetSuite and the warehouse in real time, even on the heaviest days of the year.

Black Friday

survived without incident

Real-time order + inventory sync

orders lost

Lossless triggers, replayable end-to-end

Scale your e-commerce for Black Friday

Renewable Energy · Enterprise · Summit, NJ

Energy delivered to 16,000+ households, with better observability.

Nautilus Solar manages community solar portfolios serving tens of thousands of households. Stacksync keeps their CRM, billing and operational systems in lockstep, every kilowatt-hour traceable, every customer event observable.

16,000+

households served

Live customer + billing sync

Real-time

observability across systems

No more end-of-month reconciliation

Sync your CRM, billing and operations in real time

Health Tech · Series C · Oakland, CA

Engineers back on the core product.

Eko's engineering team was spending sprints on brittle integration plumbing. Stacksync took over the syncs and workflows between their CRM, data warehouse and clinical app stack, freeing significant engineering capacity for product innovation.

100%

integration ops handed off

CRM, warehouse and product app stack

Weeks

reclaimed per quarter

Redirected to clinical product roadmap

Free your engineers from integration work

Automotive Logistics · Enterprise · St. Louis, MO

From Heroku Connect to a real-time competitive edge.

ACERTUS replaced Heroku Connect with Stacksync's real-time, bidirectional sync between Salesforce and Postgres. Data integration stopped consuming their best engineers and became infrastructure they could build on, reliably, at scale.

Heroku

Connect → Stacksync

Migrated without downtime or data loss

24/7

real-time bi-di sync

Salesforce ⇄ Postgres, conflict-resolved

Replace Heroku Connect with real-time bi-di sync

Coffee Hardware · DTC · San Francisco, CA

A connected stack from the showroom to the warehouse.

Fellow ties together its e-commerce, retail and back-office systems with Stacksync. Inventory, orders and customer data move in real time between Shopify, NetSuite and their support tools, so every team works from the same picture.

One

source of truth across systems

Shopify ⇄ NetSuite ⇄ support stack

Days

to roll out new flows

No-code config, version-controlled

Unify your retail and back-office stack

SECURITY

Security teams love Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security

SOC 2 type II

ISO 27001

HIPAA BAA

GDPR

CCPA

CSA STAR

→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

LEGACY IPAAS MIGRATION FUND

Stuck in a contract? We'll buy your way out.

Stacksync buys back your current contract with Boomi, Celigo, Workato, or MuleSoft. No strings. No catch.

Check your eligibility for the migration fund

Migrate from Boomi

Migrate from Celigo

Migrate from Workato

Migrate from MuleSoft

Migrate from Heroku Connect

Coworkers laughing in front of a laptop in a casual office setting

Your last integration took months.
Your next one takes a prompt.

Book a demo Tour the platform on your own

Two-way sync across your entire stack before your screen refreshes.

Built for teams where self-serve, reliability and scale matter

Everything real-time two-way sync needs.

Schema changes
that never break a sync.

Respect every API limit,
automatically.

Every sync issue,
surfaced and resolvable.

Sync as fast as you need,
per object.

5,000 connectors.
And AI builds for the rest.

Global enterprises and top startups choose Stacksync.

Black Friday at scale, without losing a single order.

Energy delivered to 16,000+ households, with better observability.

Engineers back on the core product.

From Heroku Connect to a real-time competitive edge.

A connected stack from the showroom to the warehouse.

Security teams love Stacksync

SSO & SCIM

Alerts

Secure connection options

Stuck in a contract? We'll buy your way out.

Your last integration took months.
Your next one takes a prompt.

Two-way sync across your entire stack before your screen refreshes.

Built for teams where self-serve, reliability and scale matter

Schema changes that never break a sync.

Respect every API limit, automatically.

Every sync issue, surfaced and resolvable.

Sync as fast as you need, per object.

5,000 connectors. And AI builds for the rest.

Global enterprises and top startups choose Stacksync.

Black Friday at scale, without losing a single order.

Energy delivered to 16,000+ households, with better observability.

Engineers back on the core product.

From Heroku Connect to a real-time competitive edge.

A connected stack from the showroom to the warehouse.

Security teams love Stacksync

SSO & SCIM

Alerts

Secure connection options

Stuck in a contract? We'll buy your way out.

Your last integration took months. Your next one takes a prompt.

Schema changes
that never break a sync.

Respect every API limit,
automatically.

Every sync issue,
surfaced and resolvable.

Sync as fast as you need,
per object.

5,000 connectors.
And AI builds for the rest.

Your last integration took months.
Your next one takes a prompt.