Maesn

Maesn

Maesn GmbH
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About

Maesn is a Unified API for ERP and accounting integrations. Software teams build one integration to Maesn and connect to DATEV, SAP, Sage, Microsoft Dynamics 365, Exact Online, Lexware, sevdesk, Xero, Odoo, Fortnox and 30+ more systems through a single REST API. Maesn unifies authentication (API keys, OAuth, database credentials, 2FA), pagination and filtering, webhooks, logging, monitoring and error handling, and normalises responses into a common data model for invoices, journal entries, contacts, payments and more. Custom fields are mapped into one schema, and synthetic webhooks cover systems without native ones. SDKs, sandboxes and quickstarts are available for Python, JavaScript, PHP, Go, Ruby and Java. Integrations run white-label under your brand, including certified marketplace listings and an embedded auth flow. Maesn is built and hosted in Germany, ISO 27001 certified, GDPR compliant and DORA-ready, and processes API calls in real time without storing customer data.

About

Recal - the headless infrastructure for everything calendar, especially building custom booking systems. While most calendar tools force their UI on you, we believe developers should have complete control. Recal provides the calendar integration layer without any frontend constraints - just pure API/SDK that works with Google, Outlook, and other providers. Whether you're building AI scheduling agents, custom booking flows, or enterprise appointment systems, you get the calendar backend without the baggage. Your UI, your rules, our reliable infrastructure running on Cloudflare's edge network.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

B2B software vendors (SaaS, fintech, AP automation, AI), enterprise IT teams and tax advisory firms that need integrations to ERP and accounting systems

Audience

Developers

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

5€/month/user
We offer individual pricing packages.
Free Version Not Supported
Free Trial Supported

Pricing

$50/month
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Supported
Live Online Not Supported
In Person Not Supported

Company Information

Maesn GmbH
Founded: 2022
Germany
www.maesn.com

Company Information

Recal
Founded: 2025
Germany
recal.dev

Alternatives

Alternatives

Categories

Unified APIs Supported

Categories

Unified APIs Supported

Integrations

Abacus Financials Supported
DATEV Supported
Exact Online Supported
Google Calendar Not Supported
Microsoft Dynamics 365 Supported
Microsoft Outlook Not Supported
Moneybird Supported
Odoo Supported
Qonto Supported
QuickBooks Accountants Supported
Twinfield Supported
Xentral Supported
Xero Supported
bexio Supported
lexoffice Supported
sevDesk Supported

Integrations

Abacus Financials Not Supported
DATEV Not Supported
Exact Online Not Supported
Google Calendar Supported
Microsoft Dynamics 365 Not Supported
Microsoft Outlook Supported
Moneybird Not Supported
Odoo Not Supported
Qonto Not Supported
QuickBooks Accountants Not Supported
Twinfield Not Supported
Xentral Not Supported
Xero Not Supported
bexio Not Supported
lexoffice Not Supported
sevDesk Not Supported
Claim Maesn and update features and information
Claim Maesn and update features and information
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