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Welcome to Logic, An Open Sourced Business Quoting and Billing Application

Logic was built to do more than simply create a quote for customers and handle automated billing. It was built to ensure you are pricing your products and services correctly, monitor profit margins, allow for more flexible billing options (such as monthly, quarterly, annual billing), manage contracts and more.

Check out our customer view and admin demo

Our demo will give you an idea of what to expect with Logic. Note: This demo site is purged nightly, and integrations and mailing is not supported in demo mode.

Mini-Feature List

  • Self-Service quoting and signup for customers
  • Integration support (ex. sync to Quickbooks Online)
  • Terms of Service management for products and services during checkout
  • Lead Management with Discovery Questionnaires
  • Automated Billing
  • Quoting with Instant Profit Metrics
  • Tool for Sales agents to create quotes with minimum and maximum pricing
  • Sales Commissions and Batching (MRR and SPIFF)
  • Monthly and Quarterly Sales Goal graphs and Forecast targets


Managed Hosted vs. Self-Hosted

If you are looking to simply use Logic for your business and do not want to download the project and manage it yourself, please visit to get started.

Logic is an application written in Laravel 9 and PHP 8.2. If you wish to self-host the application please refer to the installation guide.


This is Vocalogic's first open-sourced project. Originally developed as closed-source to help streamline our VOIP business and assist our own customers, we felt we built something special and wanted to release it to the world. There are a number of quoting/billing tools out there today, and many are ridiculously expensive, so we hope that this project brings you and your clients some relief when it comes to managing accounts.

If you are a developer and are interested in contributing, feel free to join our discord server. We are looking to continuously add new integrations, features and ongoing maintenance to make this the best customer management and billing tool available today!


Logic was built in a way you can create "Shop Now" buttons on your website and link them directly to your Logic shop. With our shop you can now sell Monthly Services as well as physical products.

Category View

Ecommerce Category View with Filters

Ecommerce Category View with Filters

Item View

Create marketing material, photos and features to display for your products and services.

Ecommerce Single Item View with Add to Cart

Ecommerce Single Item View with Add to Cart

Example Checkout - When your customers have decided on what they want, and are ready to checkout, they can create an account instantly without any intervention.

Checkout Process

Checkout Process

What’s Next