20 Apps Worth Connecting to Your ERP in 2026

Most ERP integrations exist for one reason: someone was retyping data from one screen into another. An order arrives in Shopify, a payout lands from Stripe, a deal closes in HubSpot, and each time a person copies numbers into the ERP and hopes they got them right. This guide covers 20 apps that integrate with ERP systems and are worth connecting, grouped by category. For each: what data moves, which way, how often, and what breaks without it.

One note first: work inside the ERP should not need an integration at all. In Inovexa, the 11 modules share one database, so a sales order, the stock it reserves and the invoice it produces are the same records seen from different screens. Integrations are for the apps outside that boundary.

Payments and banking

1. Stripe

Data flow: Stripe to ERP. Charges, refunds, disputes, fees and payouts. Charges usually come through webhooks in near real time; payouts are reconciled when they hit the bank.

A good setup posts each charge against the customer invoice, records the Stripe fee as an expense, and books the payout net of fees to a bank clearing account. Without the integration, someone gets a single payout of, say, 4,812.37 and has to work out which 60 invoices it covers and why it is short by the fees.

2. PayPal

Data flow: PayPal to ERP. Transactions, fees, refunds, currency conversions and transfers to your bank, usually pulled daily through PayPal's transaction reporting.

PayPal behaves like a bank account with its own balance, often in several currencies. Give it its own account in the ledger, with fees and conversions posted as they happen. The common failure without integration is a PayPal balance that never matches the books because conversion differences and small fees were never recorded.

3. Wise Business

Data flow: Wise to ERP. Account statements per currency, conversions, fees and outgoing payments. A daily import through the Wise API is normal.

Companies use Wise to hold EUR, USD or GBP and pay foreign suppliers. The ERP needs each currency balance as its own bank account and the conversion rate actually applied, not a rate typed in later. If you trade across currencies, our guide to multi-currency ERP explains how realised and unrealised FX gains should be booked.

4. Open-banking bank feeds (or Plaid)

Data flow: Bank to ERP. Statement lines with date, amount, counterparty and reference, typically once or several times a day.

In the UK and EU, open-banking rules let regulated providers read account data with your consent. Plaid offers similar access in the US, Canada, the UK and parts of Europe. The ERP then suggests matches: the 1,200.00 credit with reference INV-2041 against invoice INV-2041. Without a feed, errors from the first week of the month are found four weeks late.

E-commerce

5. Shopify

Data flow: Both ways. Orders, customers, refunds and payouts go to the ERP. Product data, prices and available stock go back to Shopify. Orders sync in near real time through webhooks; stock levels every few minutes.

Done properly, a Shopify order creates a sales order in the ERP, reserves stock, generates the invoice, and the Shopify Payments payout is booked net of fees to the bank clearing account. The classic failure without it is overselling: the warehouse ships the last unit to a wholesale customer while Shopify still shows three in stock.

6. WooCommerce

Data flow: Same pattern as Shopify, through the WooCommerce REST API. Orders in, stock and prices out.

WooCommerce runs on your own WordPress install, so reliability depends on your hosting and plugins. A plugin update can change order statuses or tax fields and quietly break the sync. Test after every update.

7. Amazon Seller Central

Data flow: Amazon to ERP for orders, FBA inventory and settlement reports; ERP to Amazon for stock (for merchant-fulfilled items) and sometimes prices.

The hard part is the settlement report. Amazon pays out per settlement period, usually every two weeks, after deducting referral fees, FBA fees, advertising and refunds. Post one summary journal per settlement, split by fee type, rather than matching every order. Without it, Amazon margin is a guess. Stock held in Amazon warehouses should also appear as its own location in the ERP; our inventory management guide covers why location-level stock matters.

CRM and marketing

8. HubSpot

Data flow: HubSpot to ERP for companies, contacts and closed-won deals. ERP to HubSpot for invoice status, payment status and order history. Event-driven or every 15 to 30 minutes is typical.

When a deal moves to closed-won, the ERP creates the customer (if new) and a sales order or quote with the same line items. Without the link, sales chases customers who already paid, and finance creates duplicate customer records with slightly different spellings.

9. Salesforce

Data flow: Same direction as HubSpot. Accounts, opportunities and quotes go to the ERP; orders, invoices, credit limits and outstanding balances come back.

Salesforce orgs are often heavily customised, so field mapping takes longer than expected. Decide early which system owns the customer record. If both can edit the billing address, they will drift apart within a month.

10. Mailchimp

Data flow: Mostly ERP to Mailchimp. Customer lists, purchase history and segments such as "bought in the last 90 days" or "has not reordered". Daily is usually enough.

The ERP knows who actually buys. Sending that to Mailchimp lets you email reorder reminders to the right people instead of the whole list. Only sync contacts who opted in, and let unsubscribes flow back so nobody is re-added by the next sync.

Productivity and communication

11. Microsoft 365 or Google Workspace

Data flow: Both ways, in small pieces. Invoices and statements sent from Outlook or Gmail, supplier emails attached to records, ERP data pulled into Excel or Google Sheets for analysis, calendar entries for deliveries or visits.

The most valuable piece is often the spreadsheet link: a live connection or scheduled export so the finance team stops copying tables by hand every Monday. If spreadsheets are still running core processes, read ERP vs spreadsheets first, because an integration will not fix a process that should not live in Excel.

12. Slack

Data flow: ERP to Slack, sometimes with actions back. Alerts and approval requests, sent as events happen.

Good uses are narrow: "Purchase order PO-3310 for 18,400 needs your approval", "Stock of SKU 2207 below reorder point", "Payment from Client X received". Posting every new order into a channel nobody reads is not.

Documents and e-signature

13. DocuSign

Data flow: ERP to DocuSign to send a contract, quote or supplier agreement; DocuSign back to the ERP when the envelope is completed, with the signed PDF. DocuSign can notify your system by webhook as soon as signing finishes.

The signed document should attach to the customer or order record, and the status change can trigger the next step, such as releasing the order. Without it, signed contracts sit in someone's inbox and sales orders wait for a person to notice.

14. Dropbox or Google Drive

Data flow: ERP to storage for generated documents (invoices, delivery notes, payslips), storage to ERP for incoming supplier invoices dropped into a watched folder.

The ERP should remain the record; the storage is the archive. Use a consistent folder and file naming scheme, such as year / customer / invoice number, and check sharing permissions. A shared folder full of payslips is a data protection problem.

Shipping

15. ShipStation

Data flow: ERP to ShipStation for orders ready to ship; ShipStation to ERP for tracking numbers, carrier used and actual shipping cost. Usually every few minutes or on each status change.

The shipping cost coming back matters more than people think. Without it, you know what you charged the customer for delivery but not what it cost, and margin per order is wrong.

16. DHL, FedEx and UPS carrier APIs

Data flow: ERP to carrier for shipment details, weights and customs data; carrier to ERP for labels, tracking events and rates.

Direct carrier APIs make sense when you ship mostly with one or two carriers and want to skip a middle layer. For international shipments, the ERP should send HS codes, country of origin and declared values from the product record, so customs paperwork does not get filled in by hand at the packing bench.

HR and time

17. Deel (or Remote.com)

Data flow: Deel to ERP. Payroll and contractor payment totals per period, split by entity, cost centre and currency, usually monthly. Employee master data can go either way.

Employer-of-record and contractor platforms pay people in countries where you have no entity. The ERP needs one journal per pay run with the right cost centres, not a single lump labelled "Deel". Without that, you cannot tell what a project or department really costs.

18. Clockify or Toggl Track

Data flow: Time tracker to ERP. Time entries by person, project and task, daily or weekly. Both tools have public APIs.

For service businesses, this is the link between hours worked and money billed. Billable hours flow into project invoices; all hours flow into project costing. Without it, invoices are built from memory at month end, and unbilled hours are simply lost.

Analytics and automation

19. Power BI

Data flow: ERP to Power BI only. Sales, margins, stock, receivables and payables, refreshed on a schedule (several times a day is common, depending on your licence).

Power BI should read from the ERP, never write to it. Agree on definitions first. If "revenue" means invoiced in one dashboard and booked orders in another, the board meeting turns into an argument about numbers.

20. Zapier or Make

Data flow: Whatever you build. Typical small flows: a web form creates a lead, a new supplier invoice email creates a draft bill, a signed contract posts a Slack message.

Good for low-volume, non-critical flows that would never justify a developer. A poor fit for the order-to-cash backbone, as the next section explains.

ERP integrations: native connector, API, iPaaS or custom middleware

There are four common ways to connect an app to an ERP.

• Native connector. Built and maintained by the ERP vendor or the app vendor. Fast to set up and someone else fixes it when an API changes. The trade-off: it does what it was designed to do, and field mapping or edge cases (partial refunds, bundles, multiple warehouses) may not be configurable.
• Direct API integration. Your developer or partner writes code against both APIs. Full control over mapping, timing and error handling. The trade-off: you own the code, the hosting and every future API version change.
• iPaaS (Zapier, Make, n8n). Visual workflows with prebuilt app modules. Quick to build and easy to change. Zapier and Make are priced per task or operation, so costs rise with volume; n8n can be self-hosted, which moves the cost to running and maintaining it yourself. Error handling is thinner than in custom code, and complex flows get hard to read.
• Custom middleware. A dedicated integration layer (your own service or an enterprise integration platform) that sits between many systems, with queues, retries, logging and monitoring. Right for high volumes or many connected systems. The trade-off: it is a project with real build and running costs.

Use native connectors where they cover your process, the API for core flows with volume or money attached, and iPaaS for the small things. The shift toward API-first ERP has made direct API work far more practical than it was a few years ago.

Integration checklist

Answer these before anyone writes a line of code or opens Zapier:

1. System of record per data type. Customers in the CRM or the ERP? Products and prices in the ERP or the shop? Write it down. Two masters for the same field means conflicts.
2. IDs and mapping. Store the external ID (Shopify order ID, Stripe charge ID) on the ERP record. Map tax codes, payment methods, warehouses, currencies and units of measure explicitly.
3. Sync frequency. Real time for stock and orders, daily for bank lines and marketing lists, per period for payroll and settlements. Faster is not always better; it costs API calls and money.
4. Error handling and retries. What happens when the ERP is down or a product code does not exist? Failed records should go to a queue that someone reviews, with automatic retries for temporary errors. Make each write safe to repeat so a retry does not create a duplicate invoice.
5. Permissions and API keys. Use a dedicated integration user with the minimum rights needed. Store keys in a secrets manager, not in a spreadsheet, and rotate them when staff leave.
6. Monitoring. A daily check that counts match: 214 orders in Shopify yesterday, 214 sales orders in the ERP. Alerts when a sync has not run for an hour.
7. Ownership. One named person or partner owns each integration, knows how it works and gets the alert when it fails.

Integration work is also one of the costs buyers most often leave out of ERP budgets. Our article on hidden ERP costs covers how to estimate it.

Summary table

Frequently asked questions

What are ERP integrations?

ERP integrations are automated connections that move data between your ERP and other apps, such as payment providers, online shops, CRMs and shipping tools. They replace manual re-entry and keep records like orders, payments and stock consistent across systems.

Which apps should I integrate with my ERP first?

Start where manual work and errors are highest. For most businesses that means the bank feed and payment providers (Stripe, PayPal), then the sales channel (Shopify, WooCommerce, Amazon), then the CRM. Integrations for alerts and reporting can come later.

Is Zapier good enough for ERP integration?

For low-volume, non-critical flows, yes. For high-volume order, stock or payment flows, a native connector or direct API integration is usually safer, because it gives better error handling, retries and logging, and per-task pricing gets expensive as volume grows.

How often should data sync between an ERP and other apps?

It depends on the data. Stock and orders should sync in near real time or every few minutes. Bank lines and marketing lists can sync daily. Payroll and marketplace settlements usually sync once per period.

What is a system of record in an integration?

The system of record is the one app that owns a type of data and wins in a conflict. For example, the ERP usually owns products, prices and invoices, while the CRM may own leads and contacts. Defining it per data type prevents two systems overwriting each other.

Does Inovexa integrate with these apps?

Inovexa's modules share one database, so internal flows need no integration, and external apps connect through its API and integrations. Connector availability depends on the app, so ask the Inovexa team which connectors are available for your stack.