27 best marketplace integrations: A guide for marketplace operators

Have you ever wondered what makes a marketplace thrive? It's not just the products or the sellers. It's the hidden connections behind the scenes that keep everything running. Marketplace integrations are the secret ingredient. They link systems, automate tasks, and make modern marketplaces possible.

In this guide, we'll highlight the best marketplace integrations and discover when to use each one.

What are marketplace integrations?

Marketplace integrations are tools that connect different systems and services behind the scenes of an online marketplace. By linking various technologies, they help make marketplace operations more efficient.

There are many moving parts to running a multi vendor marketplace, requiring more than one technology to work together. Integrations allow different technologies and software to speak to one another in one place. 

There are several key categories where marketplace integrations make sense. Click on the links to skip ahead.

1. Payments: These marketplace integrations handle transactions between buyers and sellers.
2. Shipping: Shipping integrations manage the delivery of products. They help track packages and calculate shipping costs.
3. Inventory: These integrations keep track of stock levels. They update product availability in real-time, preventing overselling.
4. Tax: Tax integrations calculate the correct taxes for each sale. They ensure compliance with local and international tax laws.
5. Customer support and communication: These marketplace integrations facilitate communication between buyers and sellers.
6. Queueing services: Queueing integrations ensure reliable message delivery between systems, preventing data loss and improving transaction processing.
7. Marketing: Marketing integrations help promote products. They connect with social media and email platforms to reach more customers.

Benefits of marketplace integrations

Marketplace integrations help multi vendor marketplaces operate better and provide a positive experience for sellers, buyers, and merchants alike.

1. Automate manual tasks

Marketplaces have many moving parts—orders, payments, shipping, customer support, to name a few. Integrations handle these tasks without human effort. Payments process instantly. Shipping labels generate automatically. Orders sync across multiple channels. Vendors save time, and buyers get a better experience.

2. Prevent costly mistakes

Manual data entry leads to errors. A single mistake can cause delays, lost orders, or financial discrepancies. Integrations eliminate these risks. Inventory updates in real time, preventing overselling. Tax calculations apply correctly, reducing compliance issues. Payments process securely, avoiding chargebacks and disputes.

3. Improve vendor and buyer experience

A seamless marketplace attracts vendors and keeps buyers coming back. Vendors want tools that simplify their operations. Buyers expect fast checkout and accurate shipping. Integrations make this possible. Automated inventory sync prevents out-of-stock items. Real-time shipping tracking builds trust. Secure payment processing speeds up transactions.

4. Scale without adding complexity

As a marketplace grows, so does its complexity. More vendors mean more orders, more inventory, and more transactions. Without integrations, scaling becomes a logistical nightmare. Connected systems ensure that growth doesn’t lead to chaos. A well-integrated marketplace can handle thousands of transactions without breaking down.

5. Ensure compliance and security

Marketplaces operate across different regions, each with its own tax rules and data laws. Integrations ensure compliance. Tax automation tools calculate the right amount for every transaction. Payment processors meet strict security standards, protecting customer data. Without these safeguards, marketplaces face legal and financial risks.

6. Gain better insights with analytics

Successful marketplaces track performance. Integrations with analytics tools provide real-time data. They show which products sell best, how customers interact with the site, and where improvements are needed. With clear insights, marketplace owners make better decisions and drive more revenue.

Must-have integrations for online marketplaces

Marketplaces rely on a lot of software to keep operations running. Integrations fill in the gaps that might be missing in your marketplace platform. As such, the integrations you need will depend heavily on your marketplace software. 

Below are common functions that require integrations. 

Payment processing marketplace integrations

Handling payments in a multi-vendor marketplace is more complex than in a traditional online store. Marketplaces must:

• Split payments between multiple vendors
• Deduct platform fees automatically
• Support refunds, chargebacks, and compliance with financial regulations

Without automation, these tasks create delays and errors. A strong payment integration removes friction, improving marketplace efficiency.

Marketplaces operating globally also need to:

• Accept different payment methods (credit cards, digital wallets, bank transfers)
• Process transactions in multiple currencies
• Comply with tax and financial regulations across different regions

A flexible, scalable payment integration solves these challenges.

Which payment integrations should your marketplace use?

Your choice of payment processor depends on your marketplace model, vendor needs, and target regions. Below are some top marketplace payment solutions, including Nautical’s pre-built integrations.

1. Stripe 

Stripe is a leading payment processor for multi-vendor marketplaces. It supports:

• Automated split payments (via Stripe Connect)
• Multi-currency transactions for international sales
• Built-in fraud protection and chargeback management

Best for: Marketplaces needing a flexible, developer-friendly payment solution.

Nautical integration: Nautical supports Stripe with a native integration.

2. PayPal

PayPal is one of the most recognized payment providers. It offers:

• PayPal for Marketplaces, designed for multi-vendor platforms
• Support for credit/debit cards, PayPal balance, and bank transfers
• Strong buyer protection policies to improve customer trust

Best for: Marketplaces looking for easy implementation and strong global adoption.

Nautical integration: Integrates via Zapier or API.

3. Trolley

Trolley facilitates marketplace payouts end-to-end — from onboarding and payouts and tax compliance and risk management. It offers:

• Mass payment capabilities designed specifically for marketplace vendor payouts
• Support for 200+ countries and 40+ currencies with local bank transfers
• Built-in tax form collection and compliance management for marketplace vendors 

Best for: Marketplaces needing robust global payment distribution and tax compliance for their sellers.

Nautical integration: Nautical supports Trolley with native integration

Choosing the right payment integration for your marketplace

The best payment processor depends on:

• Your marketplace type (B2B, B2C, P2P)
• Your vendors' needs (fast payouts, multiple currencies, digital wallets)
• Your target regions (international or domestic transactions)

Nautical Commerce integrates directly with Stripe, PayPal, and Braintree, making marketplace transactions seamless. If you're launching or scaling a marketplace, choosing a payment integration that fits your platform is essential.

Want to learn more? Explore Nautical’s payment integrations here.

Shipping and logistics marketplace integrations

Shipping and logistics are a critical part of any online marketplace. Buyers expect fast, reliable deliveries, and vendors need a streamlined way to manage fulfillment.

Marketplaces must:

• Provide real-time shipping rates at checkout
• Track shipments across multiple carriers.
• Sync inventory and order tracking across fulfillment centers.

A strong shipping integration for your marketplace automates the process and reduces errors.

Which shipping integrations should your marketplace use?

Here are the top shipping and logistics marketplace integrations.

1. ShipStation

ShipStation is a comprehensive shipping management platform that helps marketplace sellers streamline their shipping. It offers:

• Integration with 100+ selling channels and marketplaces
• Discounted shipping rates with major carriers including USPS, UPS, FedEx, and DHL
• Automated label creation, order tracking, and batch processing capabilities

Best for: Retailers who sell across multiple platforms and need a more streamlined solution. 

Nautical integration: Native integration.

2. Shippo

Shippo is a shipping API that connects marketplaces to multiple carriers. It supports:

• Discounted shipping rates from USPS, FedEx, UPS, and more
• Automated label creation and order tracking
• Address validation to prevent delivery issues

Best for: Marketplaces needing multi-carrier shipping options.

Nautical integration: Integrates through Zapier or APIs.

3. EasyPost

EasyPost provides a scalable shipping solution for marketplaces handling a large number of orders. It supports:

• Integration with 100+ global carriers
• Automated shipping rate comparison to find the best option
• Advanced tracking and real-time shipping updates

Best for: Large-scale marketplaces needing high-volume shipping automation.‍

Nautical integration: Integrates through APIs.

4. AfterShip

AfterShip is a popular ecommerce marketplace integration to automate shipment tracking and proactive customer notifications. They offer:

• Integration with over 1,100 carriers worldwide, including UPS, FedEx, and DHL.​
• Real-time tracking updates are accessible through a centralized dashboard.​
• Automated customer notifications via email or SMS at various shipment stages.​

Best for: Marketplaces aiming to enhance post-purchase experiences with reliable shipment tracking and timely customer communications.​

Nautical integration: Integrates through APIs.

Choosing the right shipping integration for your marketplace

The best shipping provider depends on:

• Your marketplace’s scale (small business vs. high-volume marketplace).
• Your vendors’ locations (domestic, international, or both).
• Your shipping speed needs (standard, express, freight).

No matter which shipping or logistics integration you choose, it will integrate with Nautical's APIs.

Want to learn more? Explore Nautical’s shipping integrations here.

Inventory and order management marketplace integrations

Managing inventory and orders in a multi vendor marketplace is complex. Sellers need real-time updates to prevent overselling, and marketplaces must coordinate stock levels across multiple sellers. Without proper integrations, inventory discrepancies can lead to lost sales and poor customer experiences.

Marketplaces must:

• Synchronize inventory levels across multiple vendors
• Automate order processing to reduce manual work
• Prevent overselling and stockouts

Delays and errors in inventory management frustrate both vendors and buyers. Strong marketplace integration software helps with accurate stock tracking and order fulfillment.

Marketplaces operating at scale also need to:

• Support multi-location inventory management
• Integrate with warehouse management systems (WMS) and enterprise resource planning (ERP) tools
• Automate order routing based on vendor location and inventory availability

Which inventory and order management integrations should your marketplace use?

Your choice depends on your marketplace model, vendor operations, and fulfillment strategy. Below are top inventory and order management solutions.

1. NetSuite

NetSuite is a cloud-based ERP that helps marketplaces manage inventory across multiple vendors. It supports:

• Automated inventory tracking across warehouses, vendors, and sales channels
• Real-time stock updates to prevent overselling
• Integration with financial and supply chain management systems

Best for: Marketplaces with complex inventory needs requiring ERP-level solutions.

Nautical integration: Integrates through Zapier or APIs.

2. Linnworks

Linnworks provides automation tools to help marketplaces streamline inventory and order management. It features:

• Centralized order processing from multiple sales channels
• Automated fulfillment rules to route orders to the right warehouse
• Demand forecasting to optimize inventory levels

Best for: Marketplaces looking for an automation-first approach to inventory and order management.

Nautical integration: Integrates through APIs.

3. Extensiv (formerly Skubana)

Extensiv has an inventory management tool designed for high-growth marketplaces. It provides:

• Predictive analytics to optimize inventory levels
• Automated order routing based on location and fulfillment costs
• API-first architecture for custom integrations

Best for: Marketplaces looking to scale with data-driven inventory insights.

Nautical integration: Integrates through Zapier or APIs.

Choosing the right inventory and order management integration for your marketplace

The best solution depends on:

• Your marketplace model (multi-channel retail, B2B, wholesale)
• Your vendors’ inventory complexity (single warehouse vs. multi-location)
• Your order fulfillment strategy (merchant-owned of seller-owned)

Tax compliance integrations

Every marketplace must collect and remit taxes correctly. Tax laws vary by region, and mistakes lead to penalties. Automating tax calculations ensures compliance and reduces manual work.

Marketplaces must:

• Calculate sales tax based on buyer and seller locations
• Apply the correct tax rates for different regions, including VAT, GST, and state-level taxes
• Generate tax reports for filing and compliance

Manually managing taxes increases errors and delays. A tax integration automates calculations and helps marketplaces stay compliant.

Marketplaces operating across multiple regions also need to:

• Support tax exemption rules
• Automate tax filing and remittance
• Keep up with changing tax laws

Which tax compliance integrations should your marketplace use?

The right tax solution depends on your marketplace’s locations and reporting needs. Below are the top tax compliance marketplace integrations.

1. Avalara

Avalara automates tax calculations, filing, and reporting. It supports:

• Real-time tax calculations based on buyer and seller locations
• Automatic tax rate updates for local, state, and international regulations
• Integration with ERP and accounting systems for tax reporting

Best for: Marketplaces needing automated tax compliance across multiple regions.

Nautical integration: Direct integration.

2. TaxJar

TaxJar simplifies sales tax collection and filing for U.S.-based marketplaces. It offers:

• Automated tax calculations at checkout
• Sales tax reporting and filing across multiple states
• Real-time compliance updates for tax rule changes

Best for: Marketplaces selling in the U.S. that need automated tax filing.

Nautical integration: Integrates through Zapier or APIs.

3. Sovos

Sovos specializes in international tax compliance. It provides:

• VAT and GST calculations for cross-border transactions
• Automated tax reporting and e-invoicing
• Compliance tools for evolving global tax laws

Best for: Marketplaces with international sellers and buyers.

Nautical integration: Integrates through APIs.

4. Vertex

Vertex offers advanced tax management for large-scale businesses. It includes:

• Detailed tax calculations for multiple jurisdictions
• Multi-country compliance support
• Integration with financial and ERP systems

Best for: Large marketplaces with complex tax requirements.

Nautical integration: Integrates through APIs.

Choosing the right tax compliance integration for your marketplace

The best solution depends on:

• The regions where your marketplace operates
• Whether your vendors need tax exemption support
• The need for automated filing and compliance

Customer support and communication marketplace integrations

Marketplaces need a way for buyers and sellers to communicate. Vendors must answer questions, resolve disputes, and provide updates. Buyers expect fast responses and reliable support. Without the right tools, managing these interactions becomes difficult.

Marketplaces must:

• Enable direct communication between buyers and sellers
• Automate support requests and FAQs to reduce response times
• Track and manage customer interactions across multiple channels

Slow or ineffective support leads to abandoned purchases and lost trust. A strong integration ensures fast responses and better customer experiences.

Marketplaces operating at scale also need to:

• Support live chat, email, and phone-based communication
• Automate ticketing and routing for customer issues
• Integrate support tools with order management systems

Which customer support and communication integrations should your marketplace use?

The right integration depends on how your marketplace handles support and buyer-seller interactions. Below are some top customer support marketplace integrations.

1. Zendesk

Zendesk is a customer support platform that helps marketplaces manage support requests efficiently. It supports:

• Ticketing automation to categorize and assign inquiries.
• Multi-channel support via chat, email, and phone.
• AI-powered self-service options to reduce workload.

Best for: Marketplaces needing a structured, automated support system.

Nautical integration: Integrates through Zapier or APIs.

2. Crisp

Crisp is an AI-powered messaging software for sales and support. It offers:

• Live chat functionality with shared inbox for team collaboration
• Advanced chatbot capabilities with AI-powered automations
• Real-time visitor insights and behavior tracking for personalized service 

Best for: Small to medium-sized marketplaces seeking to improve customer engagement with responsive, personalized support across multiple channels.

Nautical integration: Direct integration

3. Freshdesk

Freshdesk provides an all-in-one support system for marketplaces. It includes:

• AI-powered chatbots for handling common questions
• Omnichannel support, including email, chat, and social media
• Automated workflow rules to route tickets to the right team

Best for: Marketplaces handling a high volume of support inquiries.

Nautical integration: Integrates through Zapier or APIs.

4. Intercom

Intercom focuses on real-time conversations between buyers, sellers, and support teams. It provides:

• Live chat for instant customer interactions
• AI-powered chatbots for automated responses
• Personalized messaging based on customer behavior

Best for: Marketplaces that want to improve engagement through live chat.

Nautical integration: Integrates through Zapier or APIs.

5. Twilio

Twilio is a cloud-based communication platform that enables messaging and voice communication. It offers:

• SMS-based customer notifications and updates
• Automated voice support for handling inquiries
• API-driven messaging for buyer-seller interactions

Best for: Marketplaces that need phone and SMS-based communication.

Nautical integration: Integrates through Zapier or APIs.

Choosing the right customer support and communication integration for your marketplace

The best solution depends on:

• How your marketplace handles buyer-seller interactions
• The need for automated vs. live customer support
• The communication channels your vendors and buyers prefer

Queueing service marketplace integrations

Marketplaces rely on multiple systems to process payments, manage inventory, and fulfill orders. These systems need to communicate in real time without delays or lost data. Queueing services help manage this communication by ensuring that messages between systems are delivered, even if one system is temporarily unavailable.

Marketplaces must:

• Ensure reliable message delivery between different services
• Prevent data loss when processing large volumes of transactions
• Scale efficiently by handling high message loads without performance issues

Without queueing services, a failure in one system could disrupt marketplace operations. Orders might not sync, inventory could become outdated, and payment confirmations might fail. A strong queueing integration keeps everything running smoothly, even when traffic spikes or services go offline.

Which queueing service integrations should your marketplace use?

Your choice depends on the size of your marketplace, cloud provider preferences, and data processing needs. Below are top queueing service marketplace integrations.‍

1. Google Cloud Pub/Sub

Google Cloud Pub/Sub is a cloud-native messaging service that supports real-time event-driven communication. It provides:

• Automatic message replication across multiple zones for high reliability
• Per-message receipt tracking to ensure no data is lost
• Support for asynchronous workflows to improve system performance

Best for: Marketplaces needing high-scale, real-time message delivery.

Nautical integration: Direct integration.

2. Microsoft Azure Service Bus

Azure Service Bus is a fully managed enterprise message broker designed for complex systems. It includes:

• Message queues and publish-subscribe topics to support event-driven workflows
• Built-in security and encryption for reliable data transmission
• Support for transactional messaging to ensure data integrity

Best for: Marketplaces using Microsoft Azure for cloud infrastructure.

Nautical integration: Direct integration.

3. Amazon Simple Queue Service (SQS)

Amazon SQS enables communication between software components without message loss. It provides:

• Unlimited message queues for flexible scaling
• Automatic message deduplication and ordering for reliable processing
• Secure message storage to prevent data corruption

Best for: Marketplaces needing a scalable, fault-tolerant queueing service.

Nautical integration: Direct integration or connect via Zapier.

Choosing the right queueing service integration for your marketplace

The best solution depends on:

• The cloud provider your marketplace is built on (Google Cloud, Azure, AWS)
• The volume of transactions and data your marketplace processes
• The need for real-time vs. asynchronous message delivery

Nautical Commerce integrates with Google Cloud Pub/Sub, Microsoft Azure Service Bus, and Amazon SQS to ensure reliable data communication across marketplace systems. These integrations help prevent service disruptions, improve system performance, and ensure smooth marketplace operations.

Want to learn more? Explore Nautical’s queueing service integrations here.

Marketing integrations for marketplaces

Marketplaces need effective marketing tools to attract buyers, engage vendors, and drive sales. Automating marketing tasks helps personalize outreach, improve customer retention, and streamline lead generation.

Marketplaces must:

• Automate email campaigns and transactional messages
• Capture and qualify leads for vendor onboarding and customer acquisition
• Track marketing performance across multiple channels

Manually managing marketing efforts slows growth and reduces efficiency. A strong marketing integration connects all of the data to make your marketing more effective.

Marketplaces looking to expand also need to:

• Personalize messaging based on user behavior
• A/B test marketing campaigns for better results
• Integrate marketing data with CRM and analytics tools

Which marketing integrations should your marketplace use?

The right marketing tools depend on your marketplace’s size, audience, and engagement strategy. Below are top marketing integrations for marketplaces.

1. SendGrid

SendGrid is a cloud-based email platform that helps marketplaces manage email communication at scale. It supports:

• Automated email campaigns for promotions and vendor engagement
• Transactional emails for order confirmations and customer notifications
• Deliverability tools to prevent emails from landing in spam folders

Best for: Marketplaces needing reliable, scalable email marketing and transactional messaging.

Nautical integration: Direct integration or connect through Zapier.

2. Typeform

Typeform is a flexible form-building tool that helps marketplaces collect user data and feedback. It offers:

• Customizable lead capture forms for vendor applications and customer sign-ups
• Interactive surveys to improve user engagement
• Seamless integrations with marketing automation and CRM platforms

Best for: Marketplaces looking to improve lead generation and gather customer insights.

Nautical integration: Direct integration or connect through Zapier.

3. Klaviyo

Klaviyo is a data-driven marketing platform focused on audience segmentation and automation. It includes:

• Behavior-based email automation for abandoned carts and re-engagement
• SMS marketing for direct customer outreach
• AI-driven segmentation for highly targeted campaigns

Best for: Marketplaces looking for advanced segmentation and omnichannel marketing.

Nautical integration: Integrates natively.

4. Google Ads

Google Ads allows marketplaces to run targeted advertising campaigns. It supports:

• Search ads to capture high-intent buyers
• Display and retargeting ads to re-engage past visitors
• Performance tracking to optimize ad spend

Best for: Marketplaces that rely on paid acquisition for customer growth.

Nautical integration: Integrates through Zapier or APIs.

5. Meta Ads (Facebook & Instagram)

Meta Ads helps marketplaces reach customers through targeted social media campaigns. It provides:

• Advanced audience targeting based on user behavior
• Retargeting campaigns to re-engage past visitors
• Integration with product catalogs for automated ad placements

Best for: Marketplaces leveraging social media for brand awareness and conversions.

Nautical integration: Integrates through Zapier or APIs.

Choosing the right marketing integration for your marketplace

The best solution depends on:

• How your marketplace acquires vendors and customers.
• The need for email automation, paid advertising, or lead generation.
• Personalization and data-driven marketing strategies.

The final word on marketplace integrations

As you can see, marketplace integrations are important for online marketplaces. They connect systems to make operations run smoothly. They save time and reduce errors. Integrations also improve the experience for sellers and buyers. Embracing integrations keeps your marketplace competitive. They are the backbone of success.

If you're looking for marketplace software with a robust API infrastructure that can integrate with any other software, Nautical is the solution for you. Sign up for a free trial today and experience the power of seamless integrations.