Kinde vs. AuthZed

Authenticating users is one of the most critical and high-impact moments in your customers' journey. With Kinde, you can take complete control. We give you the power to manage user authorization with passwordless authentication, social logins, and enterprise SSO. You can also support your customers' branding with custom domains and a fully customizable UI, even by uploading your own designs. For complex requirements, our powerful workflows let you run your own code during the authentication process. You can easily organize all your business customers using organizations, making it simple to segment them and fine-tune their authentication experience to their unique needs. Kinde also lets you monetize your ideas faster with robust billing tools. You can effortlessly set up subscription plans and start collecting revenue. Kinde's flexible system is built to support any business model—B2C, B2B, or B2B2C—and its powerful organization management and flexible billing logic will scale with your business and your customers.

Transform your business's operational efficiency with an authorization framework that draws inspiration from Google's Zanzibar white paper. The AuthZed team, creators of SpiceDB, delivers a scalable and secure permission system designed specifically for enterprise requirements. SpiceDB is recognized as the most sophisticated open-source version of Zanzibar, providing both consistency and exceptional performance in high-stakes environments. This innovative system enables you to set precise access controls for any object within your application or across your full product range, all while managing permissions through a cohesive schema. You can easily specify individual consistency needs for each authorization check; its adjustable consistency features let you prioritize either performance or accuracy according to your specific demands. SpiceDB streamlines permission management by delivering lists of authorized subjects along with the resources they can access, simplifying the process of filtering results according to permissions. Complemented by robust observability tools, a powerful Kubernetes operator, and load-testing capabilities, SpiceDB is crafted to improve the experiences of developers and platform engineers alike, making your authorization processes seamless and efficient. By offering such a wide range of features, SpiceDB not only fortifies your application security but also enhances the overall workflow of permission management, allowing your team to dedicate more time to driving innovation forward. Ultimately, the integration of SpiceDB into your operations can lead to a more agile and responsive business environment.