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Open Source Authentication Software (2026)

Last updated: March 2026

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8 software options

Passbolt logo

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The Future of IAM is here and it's converged

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No obstacles or entry barriers. There is no acquisition cost, only a competitive annual subscription for maintenance and support. This subscription does not change or limit the product in any functionalities.

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walt.id Identity Infrastructure logo

Leading open source solutions for Self-Sovereign Identity.

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eCertApp logo

Cloud-based authentication software

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Open Source
eCertApp Pricing: Affordable and Scalable Our pricing structure is designed to offer flexibility and value, ensuring that you pay only for what you need. With our top-up-based model, you're in control of your expenses while enjoying the benefits of eCertApp's advanced features. Key Points: 1. Pay as You Go: Our top-up model allows you to purchase credits that can be used for various actions within the platform. 2. Cost-Efficient: You decide how many credits you need, making it a cost-effective solution for both small and large institutions. 3. No Lock-In: There are no long-term commitments or contracts. Top-up when needed and use the credits as required. 4. Transparent Usage: Monitor your credit consumption and usage through our user-friendly dashboard. 5. Scalability: Whether you issue a few certificates or thousands, our pricing adjusts to your scale. 6. Customizable: Tailor your usage based on your specific requirements, ensuring you get the best value. 7. Support and Updates: Access to our customer support and continuous updates are included in your plan. Experience the freedom of eCertApp's top-up pricing. Get started today and revolutionize your certificate management while staying in control of your costs.

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