Best API Integration Platforms and Tools in 2026, Compared

API integration platforms split by who is expected to operate them. No-code iPaaS (Zapier, Make, Activepieces) puts connections in the hands of whoever needs them. Developer-first platforms (n8n, Windmill, and Pipedream until its Workflows product shuts down on March 31, 2027) assume a code step is faster than a config screen. Enterprise iPaaS (Workato, Tray.ai, MuleSoft, Boomi) sells governance, environments and a support contract alongside the connectors. And a fourth option that rarely appears on these lists: when the integration is the product rather than plumbing between other people's products, Greta builds the application that owns the data and calls the APIs directly. Pick the tier by who maintains it in month six, not by connector count.

Every iPaaS vendor advertises the same two numbers: how many connectors they have, and how fast you can build your first automation. Neither predicts what the thing costs to own. What predicts that is who is expected to fix it at 9am when a vendor changes an API response.

This guide covers the six API integration tools most teams shortlist (Zapier, Make, Pipedream, n8n, Workato and Tray), with each one's free tier, entry price, best fit and limits taken from its own pricing page.

How we compared

Who can build and maintain it, what failure looks like (silent retry, dead letter, an email), environment and versioning support, and pricing shape at real volume. Prices and free tiers were checked on each vendor's own pricing page on November 5, 2026. Where a vendor doesn't publish a number, we say so instead of guessing.

At a glance

The tiers, honestly

No-code iPaaS earns its place on breadth and accessibility. Zapier's catalog is the category's widest, and that genuinely matters when the long tail of SaaS is your integration surface. Make trades some approachability for real branching and iteration; Activepieces gives the same shape as open source. The shared limit is debuggability rather than version control: both Zapier and Make do offer version restore, so "no rollback" would be wrong (check your plan, because availability is tiered). What is genuinely missing is a reviewable diff between versions and automated test coverage, so past about ten steps the canvas stops explaining itself and restoring an older version is the only way back.

Developer-first platforms fix exactly that. n8n lets a step be code, which means a hard problem gets solved in five lines rather than four modules and a formatter. n8n self-hosted also removes usage pricing, at the cost of running a service. The trade is who can maintain it. These are developer tools with a friendly surface, not no-code tools with an escape hatch.

Enterprise iPaaS is a different purchase entirely. Workato, Tray, MuleSoft and Boomi sell environments, approvals, audit trails, role separation and someone to call. That is worth real money when integrations carry regulated data or cross departments; it is a procurement exercise when you have six workflows.

Zapier — the widest no-code catalog

Free tier: Zapier's Free plan is $0 with 100 tasks a month, unlimited Zaps, Tables and Forms, and two-step Zaps only (one trigger, one action), per the Zapier pricing page. It polls for new data every 15 minutes and has one seat.

Entry price: Professional starts at $19.99 a month billed yearly, or $29.99 billed monthly, for 750 tasks. It adds multi-step Zaps, unlimited premium apps and webhooks. Team starts at $69 a month billed yearly ($103.50 monthly) for 2,000 tasks, with 25 users, shared Zaps and SAML SSO. Enterprise is priced by sales.

Best for: teams where the person who needs the automation is not a developer, and the apps involved are the long tail of SaaS. If a tool has an API, Zapier probably has a connector for it.

Limits: pricing is per task, and a task is each action a Zap completes, so a busy five-step Zap burns through a tier fast. Zapier doesn't charge for the polling checks, only for completed actions. The free plan's two-step cap is the real wall: almost anything useful needs a filter or a second action, which means Professional.

Make — cheaper per operation, more logic

Free tier: 1,000 credits a month with no time limit.

Entry price: Make's cheapest paid plan, Core, is $9 a month for 10,000 credits on annual billing, per Make's own Make vs Zapier article. Its comparison page lists Pro at $16 and Teams at $29 a month, each starting at 10,000 credits. Make bills in credits, and the free plan includes 1,000 a month. These prices match make.com/pricing as of November 2026.

Best for: ops-minded builders who want routers, iterators and error handlers on a visual canvas, and who care about cost per run more than catalog size.

Limits: each module in a scenario typically uses at least one credit per run, and AI features or modules that handle many bundles can use more. A scenario that loops over 200 rows spends 200 credits on that one module. Model your busiest scenario before picking a tier.

Pipedream — read this before you build on it

Free tier: Pipedream's current pricing page covers Connect, its product for developers adding connectors to their own apps and AI agents. Free includes every feature in development, 3,000+ connectors and unlimited team members.

Entry price: Connect's Startup plan is $99 a month billed annually or $150 billed monthly, with 100 end users included (then $2 each) and 10,000 usage credits. Business is custom with annual billing. A credit is 30 seconds of compute at the default 256MB of memory, per Pipedream's pricing docs.

Best for: developers building an integration layer into their own product, not teams looking for a workflow tool.

Limits: this is the big one. Pipedream says Workflows and String are shutting down on March 31, 2027. Workflows is in maintenance mode, existing workflows keep running until that date, and Pipedream is no longer accepting signups or subscriptions or shipping new features for it. All Workflows data, including connected-account credentials, will be deleted by April 30, 2027, and there's an export tool that downloads workflow structure as JSON. Connect isn't affected. If you came here looking for the code-step workflow tool Pipedream used to be, n8n is now the closer fit.

n8n — the self-hosted escape from per-task pricing

Free tier: the n8n Community Edition is a self-hosted version available on GitHub, free to run on your own infrastructure. The cloud plans offer a free trial with no credit card.

Entry price: n8n prices on workflow executions, not steps or users, and every plan includes unlimited users and workflows, per the n8n pricing page. Starter is €20 a month billed annually for 2,500 executions and 5 concurrent executions. Pro is €50 for 10,000 executions, with workflow history and admin roles. Business, €667 a month billed annually, is self-hosted only and adds SSO, multiple environments and version control with Git. Companies under 20 employees can apply for a Startup plan at 50% off Business. (n8n showed us prices in euros.)

Best for: teams with someone who can run a server, or who want code steps, branching and AI nodes without paying per step. Counting a whole run as one execution is generous for long workflows.

Limits: self-hosting moves the cost from subscription to your time: upgrades, backups, queue mode when volume grows. Git-based version control and multiple environments sit on Business, which is a big jump from Pro.

Workato — enterprise governance, priced by quote

Free tier: no free plan is published.

Entry price: not published. The Workato pricing page lists four editions (Standard, Business MCP, Enterprise MCP and Workato ONE) and a "Get a quote" button. Standard already includes dev, test and production environments, recipe lifecycle management, SAML SSO, role-based access control and 30-day log retention. Workato says every user gets 1,200+ prebuilt connectors, with unlimited workspaces and users, and a usage dashboard tracks task consumption.

Best for: an integration or IT team that needs environments, audit trails and role separation from day one, across departments.

Limits: you can't price it without a sales conversation, and Workato notes that plan structures vary by contract and when you joined. For a handful of workflows, it's more platform than you need.

Tray.ai — usage-based enterprise iPaaS with a real trial

Free tier: a 30-day trial with 1 million Tasks on Tray iPaaS, every capability and the full connector library, with no card and no sales call, per the Tray pricing page.

Entry price: Tray's iPaaS plans (Pro with 3 workspaces, Team with 20, Enterprise unlimited) are each "sized to your needs" and quoted from the usage you measure in the trial, as a fixed annual price. The one published number is $50 a month to start on the Tray AI Orchestration Platform with Tray Helix Builder Edition.

Best for: teams that want enterprise features without per-user or per-connection fees. Tray counts each trigger, connector step or loop pass as one Task, doesn't charge for retries, and charges nothing extra for adding users.

Limits: you commit to annual volume, and usage above it is settled at a true-up. Run your real workflows in the trial before you sign, which is exactly what Tray recommends too.

Free API integration tools

If the budget is zero, there are four real options, and they fail in different ways.

• Zapier Free: 100 tasks a month and two-step Zaps. Fine for one or two simple automations, like a form submission landing in a spreadsheet.
• Make Free: 1,000 credits a month with no time limit, and multi-step scenarios. The most room on a hosted free plan in this list.
• n8n Community Edition: free and self-hosted, with no execution limit beyond your server. The cost is running it.
• Activepieces: open source and free to self-host, with cloud tiers if you'd rather not.

Pipedream's free tier is development-only for Connect, and Workflows no longer accepts signups, so it's off this list. Tray's 30-day trial is generous but it's a trial. And if the "integration" is really receiving events from Stripe, GitHub or Shopify, you may need webhook tooling rather than an iPaaS; our roundup of webhook tools covers testing, debugging and replaying deliveries.

The question that sorts the tiers

Ask: when this breaks at 9am on a Tuesday, who fixes it, and what do they look at? No-code answers "whoever built it, in the canvas." Developer-first answers "an engineer, in the code." Enterprise answers "the integration team, in the run log." If your honest answer is "nobody knows, we'd rebuild it," the workflow is load-bearing and undocumented, and no tier on this list fixes that by itself.

When the integration is the product

The fourth option applies when the data belongs to you. If the "integration" is really an ordering system that talks to a payment provider and a shipping API, iPaaS is the wrong shape: you are keeping the business's real state in a spreadsheet so that workflows can read it. Describing the system to Greta builds the app that owns that state and calls the APIs itself, with real tables, real logic and deployment, with the free plan (5 credits a day) covering the first version. Starter is $20 a month normally, $5 a month on the current welcome offer.

Where this is the wrong answer, plainly: connecting SaaS products you don't own (Slack to Notion, Typeform to Airtable) is exactly what iPaaS is for, and building an app to do it would be absurd. Our Zapier alternatives guide covers that side by exit reason.

FAQ

What is an API integration platform? Software that connects applications without you writing and hosting the connection yourself: triggers, actions, data mapping, retries and monitoring, delivered as a managed service.

What are the best free API integration tools? Make's free plan (1,000 credits a month) has the most room among hosted options, Zapier Free gives 100 tasks a month with two-step Zaps, and n8n's Community Edition and Activepieces are free to self-host. Prices as of November 2026.

What is the best iPaaS for a small team? Zapier if breadth and accessibility matter most, Make if cost per operation matters more, n8n or Activepieces self-hosted if you would rather pay in infrastructure than subscription. Enterprise iPaaS is rarely the right first purchase.

How much do integration platforms cost? Entry plans start at $9 a month for Make Core (billed yearly), $19.99 for Zapier Professional (billed yearly) and €20 for n8n Starter (billed yearly), and scale with task, credit or execution volume. Workato and Tray's iPaaS plans are quoted and annual. All as of November 2026. The cost people forget is maintenance time when a vendor changes an API.

Is Pipedream shutting down? Pipedream Workflows and String shut down on March 31, 2027, and Workflows no longer accepts new signups or subscriptions. Pipedream Connect, its connector product for developers, continues.

Can I replace an integration platform with custom code? For integrations central to your own product, often yes, and an AI app builder makes that practical without a development team. For the long tail of third-party SaaS connections, no. That is what the connector catalogs are for.