coss.com
Building the future of commercial open source software
What is coss.com? Complete Overview
coss.com is a holding company focused on commercial open source software (COSS), aiming to create sustainable models for open source projects. It currently houses cal.com, a pioneer in open source scheduling infrastructure. The company's mission is to support open source projects by providing them with the necessary resources to thrive. For developers, coss.com offers the COSS Stack, a comprehensive npm package that includes essential tools like email, SMS, calendar APIs, scheduling, video conferencing, notifications, and more. This unified infrastructure API simplifies development by offering a single environment key for all services. coss.com envisions a future where open source is not only sustainable but also commercially viable, potentially even tradable on stock exchanges.
coss.com Interface & Screenshots

coss.com Official screenshot of the tool interface
What Can coss.com Do? Key Features
COSS Stack
The COSS Stack is a one-line npm install package that includes everything developers need to build applications. It features modules for authentication, video conferencing, calendar integration, email, SMS, and payments, all maintained under a single environment key for seamless integration.
Unified Infrastructure API
coss.com partners with best-in-class COSS companies to offer a unified API, simplifying the development process. This allows developers to access multiple services through a single key, reducing complexity and improving efficiency.
Open Source Sustainability
coss.com is committed to creating sustainable models for open source projects. By commercializing open source software, it ensures long-term success and growth for these projects, benefiting both developers and businesses.
cal.com Integration
As part of coss.com, cal.com provides open source scheduling infrastructure, acting as the 'Google Search' of the COSS ecosystem. This integration offers developers robust scheduling tools that are both flexible and scalable.
Best coss.com Use Cases & Applications
Building a Scheduling App
Developers can leverage cal.com's open source scheduling infrastructure to build custom scheduling applications. The COSS Stack provides additional functionalities like email notifications and video conferencing, creating a comprehensive solution.
Unified Communication Platform
Businesses can use the COSS Stack to integrate multiple communication channels (email, SMS, video) into a single platform, streamlining operations and improving user experience.
How to Use coss.com: Step-by-Step Guide
Install the COSS Stack by running 'npm install @coss' in your project directory. This will add all necessary dependencies to your package.json file.
Configure your environment by adding the COSS_KEY to your .env file. This key will grant access to all integrated services.
Import the required modules (e.g., @coss/auth, @coss/video) into your project and start using them in your application.
Deploy your application with the confidence that all integrated services are maintained and supported by coss.com and its partners.
coss.com Pros and Cons: Honest Review
Pros
Considerations
Is coss.com Worth It? FAQ & Reviews
The COSS Stack is a collection of npm packages that provide essential services like authentication, video conferencing, and more, all under a single environment key for easy integration.
You can join the early access waitlist or apply for open positions to get involved with coss.com and its projects.