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OpenAS2

Free#26 of 30 in Electronic Data Interchange Software

OpenAS2: A focused, self-hosted AS2 server for organizations managing their own EDI infrastructure. Ranked #26 of 30 in Electronic Data Interchange Software by our editors (6.7/10); pricing: Open source; best for organizations needing open-source AS2.

6.7/10Editor score

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At a glance

Editor score
6.7 / 10
Pricing
Open source
Best for
Organizations needing open-source AS2
Paid from
Free
Facts checked
20 Sep 2026

Where it wins
- Supports EDI-X12, EDIFACT, XML, and binary payloads
- Configurable signing, encryption, certificates, and partner profiles
- Includes REST, web configuration, tracking, and Docker deployment
Where it doesn't
- Focused on AS2 rather than a complete EDI processing suite
- Self-hosted deployment requires organizations to manage the infrastructure
- No AI features are included

Our verdict on OpenAS2

OpenAS2 is a self-hosted Java server for exchanging EDIINT AS2 messages between trading partners. It is aimed at organizations that want to manage their own AS2 infrastructure while supporting EDI-X12, EDIFACT, XML, and binary payloads. The project covers both transmission and receipt of messages, with partnership configuration, partner certificate and profile management, directory polling for outbound file processing, and database-backed message tracking. Its GNU General Public License version 3 distribution also makes it a fit for teams seeking open-source AS2 software.

AS2 is the product’s central strength. Message signing and encryption algorithms are configurable, while certificate and profile management support the operational requirements of partner connections. The REST API exposes server operations and configuration, and the web-based interface provides another way to manage the system. Docker and Docker Compose deployment files add a defined deployment path for teams that package infrastructure this way, although the self-hosted model leaves infrastructure administration with the organization.

OpenAS2 is a focused choice rather than a broad EDI processing and onboarding suite. Its capabilities center on AS2 messaging, REST operations, directory polling, partnership management, and message tracking. Organizations that need open-source AS2 exchange with control over deployment should consider it. Teams looking for a wider platform covering extensive EDI processing, broader integration workflows, or a more comprehensive onboarding environment should choose an alternative built around those needs.

Your product? Our editors can test OpenAS2 in depth and publish a review, labelled as paid · from $149/mo →

OpenAS2 pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

OpenAS2 fact sheet

Free plan	Not verified
Paid from	Free
Monthly transaction limit	Not verified
Trading partner limit	Not verified
EDI standards	EDI-X12, EDIFACT, EDIINT AS2
Document types	Not verified
Integration methods	AS2 messaging, REST API, directory polling
Deployment	Not verified
Partner onboarding	Yes
Deployment	Self-hosted
Platforms	Web
Support	Community, Docs
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	20 Sep 2026

Alternatives to OpenAS2

See all OpenAS2 alternatives →

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Featured on iTechGuides

OpenAS2 is listed in our Electronic Data Interchange Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update