FusionAuth
FusionAuth is the authentication and authorization platform engineered for developers who demand flexibility and control. Built from the ground up to integrate with any stack, every feature — from user registration to MFA and SSO — is exposed via a modern, well-documented API.
Support for every major identity protocol is included out of the box: OIDC, SAML, OAuth2, JWT, passwordless login, social sign-on, and more. Whether you’re building a greenfield app or retrofitting auth into a legacy system, FusionAuth adapts to your use case — not the other way around.
Need compliance? FusionAuth helps you meet GDPR, HIPAA, and COPPA standards quickly and reliably.
Deploy it your way: install on Linux, Windows, macOS, Docker, or Kubernetes — or go with FusionAuth Cloud, our managed SaaS hosting. No black boxes. No vendor lock-in. Just powerful, customizable auth that works the way you do.
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Auth0
Auth0 takes a modern approach to Identity and enables organizations to provide secure access to any application, for any user. Auth0 is highly customizable, and simple yet flexible. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation.
With Auth0, you can rapidly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control.
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Cargo
Cargo serves as the package manager for Rust, handling tasks such as downloading dependencies, compiling packages, creating distributable versions, and uploading them to crates.io, which is the Rust community's designated package registry. Contributions to this book can be made through GitHub. To begin using Cargo, you need to install both Cargo and Rust, then create your first crate. Through the command-line interface, you will be able to interact with Cargo easily. A Rust crate can be classified as either a library or an executable, known respectively as a library crate or a binary crate. Generally speaking, the term crate can denote the source code of the project or the compiled output it generates. Additionally, it may also refer to a compressed package obtained from a registry. You can create crates that depend on external libraries available on crates.io, other registries, git repositories, or even local subdirectories. Moreover, there is an option to temporarily change the location of a dependency, providing flexibility in your project management. This versatility makes Cargo an essential tool for Rust developers.
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Zypper
Zypper serves as a command-line package management tool, allowing users to install, update, and remove software packages efficiently. Moreover, it provides functionality for repository management, behaving consistently like other command-line utilities. With its array of subcommands, arguments, and options, Zypper allows users to carry out specific tasks efficiently. Its advantages over graphical package managers are noteworthy, as being a command-line tool enables Zypper to operate more rapidly and consume fewer system resources. Additionally, its actions can be easily scripted, which enhances automation capabilities. Zypper is particularly advantageous for servers and remote machines that lack graphical desktop environments, making it a versatile choice for system administrators. To use Zypper, simply type its name followed by the desired command, and you can also include one or more global options directly before the command. Certain commands may require additional arguments for completion. However, it is important to note that executing subcommands within the Zypper shell and utilizing global Zypper options simultaneously is not supported. This limitation should be taken into account when planning to use Zypper for package management tasks.
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