Merge.dev Alternatives: The Best Unified API Platforms to Consider
Most teams don’t outgrow Merge because it’s bad. They outgrow it because it was built for a specific slice of the integration problem — and that slice gets smaller as products scale.
Per-linked-account pricing that compounds as your user base grows. Limited flexibility for custom schemas. A store-and-sync architecture that creates compliance friction in regulated industries. And a hard ceiling on any system that doesn’t have a public API. Teams that hit those walls aren’t looking for a cheaper version of Merge. They’re looking for something architecturally different.
This guide is for product and engineering teams figuring out what comes next. If you’re evaluating the broader unified API landscape, start with our roundup of the best unified API platforms of 2026.
What Merge is good at
Before getting into alternatives, it’s worth being honest about where Merge earns its reputation.
For standard SaaS integrations across well-documented categories — HRIS, ATS, CRM, accounting, ticketing — Merge delivers real value. It normalizes data models, maintains connectors when upstream APIs change, and removes a significant amount of overhead for teams that don’t want to build and maintain integrations themselves. If your needs are predictable, your customer base is SMB-heavy, and you’re not hitting the pricing ceiling, it does the job.
The alternatives below are for when that stops being true.
Where Merge falls short & why people start to search for alternatives
Pricing that punishes growth. The per-linked-account model makes sense at low volume. At scale it becomes a structural problem no plan tier fully solves. As your customer base grows, integration costs grow with it in a way that erodes margin.
Custom schemas are an afterthought. Merge is built around normalized data models. Enterprise customers almost always want custom fields, custom objects, and non-standard data structures. The architecture isn’t built for that.
Your customers’ data lives on Merge’s servers. Store-and-sync means Merge holds a synchronized copy of your customers’ data. For teams selling into fintech, healthcare, or insurance, that’s compliance scope that’s difficult to justify to enterprise buyers.
It only works if there’s an API. This is the ceiling most teams don’t see coming. Merge connects to hundreds of platforms — all of which have APIs. The legacy ERPs, government portals, insurance carriers, and older enterprise systems your customers actually depend on often don’t. When you need those, Merge has nothing to offer. That gap is exactly what API-less integration strategies are built to solve — and why most valuable data still lives outside the API layer.
The best alternatives
1. Deck — Best overall alternative
Every other platform on this list shares Merge’s core constraint: they all require the target system to have an API. When it doesn’t, they stop working. Deck doesn’t have that problem.
Instead of connecting to APIs, Deck connects to web interfaces directly. AI agents navigate portals, fill forms, extract data, and submit actions the way a human user would — giving developers programmatic read and write access to any web-based system, regardless of whether it has a public API.
Where Merge covers systems that were built to be connected to, Deck covers everything else. Legacy ERPs, government portals, insurance carriers, utilities — systems enterprise customers depend on every day with no developer endpoint in sight. No per-linked-account pricing, no normalized data model constraints, no store-and-sync compliance scope. SOC 2 Type II certified, GDPR compliant, and HIPAA ready.
Companies like Bilt, Ramp, Deel, and Wealthsimple use Deck to ship integrations a unified API alone couldn’t support. Explore the Deck API to see how teams wire agent-based access into their products.
Best for: product teams whose integration roadmap goes beyond what APIs alone can reach.
2. Grid Squid — Best for CRM-specific integrations
Grid Squid is a unified API built exclusively for CRM integrations. Where Merge spreads across multiple categories with varying depth, Grid Squid goes deep on one: connecting to Salesforce, HubSpot, Microsoft Dynamics, Zoho, NetSuite, Pipedrive, and others through a single standardized API.
The focus pays off. CRM-specific features like bulk import and export, event-driven updates, and custom field handling are first-class, not afterthoughts. The developer experience is clean — open documentation, no account required to explore, and most teams are operational within a day of getting API access. Flat-rate pricing removes the per-connection cost problem entirely.
If CRM integration is the primary use case and you want a platform that specializes rather than generalizes, Grid Squid is the sharper tool.
Best for: teams whose integration needs are CRM-focused and want depth over breadth.
3. Nango — Best for teams that want to own their integration layer
Nango is open-source and code-first. Instead of abstracting integrations behind a unified API, it gives developers direct access to underlying APIs with infrastructure handling authentication, token refresh, and rate limiting. You write the integration logic; Nango handles the plumbing.
The tradeoff is effort. You get more control and flexibility — custom schemas, niche platforms, non-standard integrations — but you’re building more of the logic yourself. For engineering teams that want full ownership without being constrained by a platform’s normalized data models, it’s the right foundation. Open-source means no vendor lock-in and no per-connection pricing compounding against you at scale.
Best for: engineering-led teams that want full control and aren’t willing to be constrained by pre-built data models.
4. Apideck — Best for teams outgrowing Merge’s pricing
Apideck covers the same core categories as Merge — CRM, HRIS, accounting, file storage — with a pricing model that scales more predictably. It operates pass-through, meaning it doesn’t store your customers’ data between requests, which simplifies compliance considerably.
If the core problem is Merge’s per-account pricing compressing your margins as you grow, Apideck is the most direct swap. Comparable integration breadth, solid developer experience, and a cost model that doesn’t punish you for adding customers.
Best for: teams that need unified API coverage at a cost that holds up as they scale.
5. Endgrate — Best for fast time-to-integration
Endgrate positions itself as the fastest way to add integrations to a B2B product. Connect once to the platform and get access to 100+ integrations across CRM, accounting, ecommerce, helpdesk, database, and more. It handles development, authentication, maintenance, logging, and security — and wraps it in a fully white-labeled, customizable UX your customers interact with directly.
Where Merge normalizes everything into a fixed schema, Endgrate is schema-agnostic — it adapts to each integration’s native data model rather than forcing a standard. Unlimited connections and unlimited transfers across all plans removes the per-account scaling concern from the start.
Best for: teams that want fast integration coverage across many categories with minimal internal engineering overhead.
How to choose
The right platform depends on what’s actually blocking you.
CRM-specific depth: Grid Squid. Pricing that compounds at scale: Apideck. Full developer control: Nango. Fast time-to-integration across many categories: Endgrate.
And if the systems you need to connect to don’t have APIs at all — legacy software, portals, enterprise tools that were never built to be integrated — none of the above gets you there. That’s where Deck is the only answer.
For most product teams at scale, it’s not one platform or the other. It’s using a unified API for the systems that support it, and Deck for everything else. Together they cover the full integration surface. For related reads, see how to build API integrations that hold up in production, our n8n alternatives guide, and Browserbase alternatives for browser automation at scale.