Merge.dev & Codat Alternative
Unified APIs like Merge.dev and Codat are convenient but come with trade-offs: no self-hosting, limited write-back, and per-connection pricing. SaaSDog gives you full control with true bidirectional sync.
SaaSDog vs Unified APIs at a Glance
| Feature | SaaSDog | Merge / Codat |
|---|---|---|
| Bidirectional Sync | Full | Limited |
| Write-Back Support | Full | Limited |
| Self-Hosted Deployment | Yes | No |
| Full Source Code | Yes | No |
| Per-Connection Pricing | None | Yes |
| Conflict Resolution | Version vectors | Varies |
| Per-Record Sync State | Full | Limited |
| Data Sovereignty | Your infrastructure | Their cloud |
| Embeddable UI | Yes + source | Yes |
| Add Custom Integrations | Full control | Request only |
| Extend with AI Tools | Yes | No |
Unified APIs vs. Sync Engines
Unified APIs (Merge, Codat) provide a single API to read from many systems. Great for pulling data, but write-back is often limited or unavailable. You can't self-host, can't see the code, and you're dependent on their supported integrations.
SaaSDog is a sync engine you own. Full bidirectional sync with conflict resolution, deploy on your infrastructure, and add any integration you need using the reference implementation as a guide.
Why Teams Choose SaaSDog Over Unified APIs
True Bidirectional Sync
Unified APIs focus on reads. SaaSDog provides full write-back with version vector conflict resolution - sync data both directions reliably.
No Per-Connection Fees
Merge and Codat charge per connected account. As your customer base grows, so do costs. SaaSDog has no per-connection pricing.
Data Sovereignty
Enterprise customers often require data to stay in their environment. Self-host SaaSDog on your AWS, Azure, or GCP infrastructure.
Add Any Integration
Don't wait for Merge to support a system. With full source code, add new integrations yourself using the QuickBooks reference as a guide.
Write-Back That Actually Works
Most unified APIs are read-heavy. Write-back support is often incomplete, inconsistent, or only available for certain integrations. SaaSDog treats writes as a first-class operation:
Per-Entity Sync Direction
Configure each entity independently: inbound only, outbound only, or bidirectional. Vendors might be bidirectional while invoices are outbound-only.
Conflict Resolution Rules
When both sides change a record, resolve automatically: external wins, your system wins, or flag for manual review.
Change Detection
Version vectors track changes on both sides. Know exactly which records need to sync and in which direction.
Incremental Sync
Only sync what changed. No need to re-fetch entire datasets - efficient for large record counts.
Not a Unified API - A Platform You Own
SaaSDog is a different approach than unified APIs. You get:
The trade-off: you start with the QuickBooks integration and add others as needed, rather than getting 100+ pre-built connectors. But you own everything, and AI coding tools make adding new integrations faster than ever.
Own your integration infrastructure
Stop paying per-connection fees and hoping for write-back support. Get true bidirectional sync with full source code and self-hosted deployment.