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About

Unblock your business with an authorization system inspired by Google's Zanzibar white paper. As the creators of SpiceDB, the AuthZed team delivers enterprise-ready permissions systems built for scale and security. The most mature open source Zanzibar implementation designed for both consistency and performance at scale. Define fine-grained access for any object in your application or across your product suite and manage permissions using a centralized schema. Specify consistency requirements per authorization check; tunable consistency features balance performance and correctness according to your use case. SpiceDB returns lists of authorized subjects and accessible resources, helpful when pre-filtering permission-based results. Instrumented with observability tooling, a powerful Kubernetes operator, and load-testing capabilities, SpiceDB prioritizes both developer and platform engineering experiences.

About

CircuitSim is a full SPICE circuit simulator with a 3,000+ component library and a modern schematic editor. No install, free to get started. Built for students, educators, and professionals. It runs in a browser tab and needs no admin rights, so it works on Chromebooks and locked-down school laptops. Run seven kinds of analysis: interactive, interactive operating point, transient, AC sweep, DC operating point, DC sweep, and parameter sweep. Results plot on oscilloscope-style charts, with probes you can drop anywhere in the circuit. Define custom parts from SPICE model text or import KiCad symbols. CircuitSim also imports Multisim Live designs ahead of that product's retirement on September 15, 2026. It is the only browser tool that opens .csim, .ms14, and .msjs files, and it rebuilds the schematic with wiring, placement, net labels, probes, and simulation settings intact. Classroom licensing adds seat assignment, anonymous student seats, and private student work.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Organizations requiring a tool to build fast and secure authorization systems

Audience

Engineering students, professors and teachers, makers and hobbyists, and practicing engineers

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$2.99
Free Version
Free Trial

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
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

AuthZed
United States
authzed.com

Company Information

CircuitSim
Founded: 2025
United States
circuitsim.com

Alternatives

Alternatives

OpenFGA

OpenFGA

The Linux Foundation
Auth0

Auth0

Okta
LTspice

LTspice

Analog Devices
TINA-TI

TINA-TI

Texas Instruments

Categories

Categories

Integrations

Amazon Web Services (AWS)
Google Cloud Platform
Kubernetes
Microsoft Azure

Integrations

Amazon Web Services (AWS)
Google Cloud Platform
Kubernetes
Microsoft Azure
Claim AuthZed and update features and information
Claim AuthZed and update features and information
Claim CircuitSim and update features and information
Claim CircuitSim and update features and information