List of popular Free/ Open Source Billing and Inventory Management Software Applications

A billing cum Inventory Management System is a software solution that combines features of both billing (and invoicing) and inventory management into a single integrated system. This type of system is commonly used by businesses that need to manage both their sales transactions and their inventory of goods or products.

By combining billing and inventory management functionalities, businesses can streamline their operations, improve accuracy, and gain better insights into their sales and inventory activities. This type of system is especially beneficial for retail stores, e-commerce businesses, wholesalers, distributors, and manufacturers who need to manage both their sales transactions and inventory levels effectively.

Below is list of most popular open-source or free inventory management software along with brief feature, scalability, ease of use, licensing model, technology stack , deployment model, Infra required and website url  :


1. Odoo :- Formerly known as OpenERP, Odoo offers a suite of open-source business applications, including inventory management, CRM, accounting, and more.

  • Features: Offers a comprehensive suite of business applications including inventory management, CRM, accounting, sales, and more. Highly customizable with a wide range of modules and integrations.
  • Scalability: Suitable for small to large businesses due to its modular architecture and scalability options.
  • Ease of Use: User-friendly interface with customizable dashboards and workflows.
  • Licensing Model: Dual-licensed under the GNU Affero General Public License (AGPL) and a proprietary license for enterprise features.
  • Technology Stack: Python, PostgreSQL, JavaScript (for the frontend), XML, CSS.
  • Deployment Model: Can be deployed on-premises or in the cloud. Odoo also offers Odoo.sh for managed cloud hosting.
  • Infrastructure Requirements: Requires a server environment with Python, PostgreSQL, and adequate resources based on the scale of usage. Cloud deployment may require subscription fees or usage-based pricing.

2. ERPNext :- ERPNext is an open-source ERP system that includes modules for inventory management, accounting, CRM, project management, and more.

  • Features: Provides modules for inventory management, accounting, CRM, project management, and more. Offers comprehensive functionality suitable for various business processes.
  • Scalability: Suitable for small to medium-sized businesses, with options for customization and scalability.
  • Ease of Use: Intuitive interface with customizable workflows. May require some technical expertise for setup and customization.
  • Licensing Model: Released under the GNU General Public License (GPL).
  • Technology Stack: Python, MariaDB/MySQL, JavaScript (for the frontend), HTML/CSS, Frappe Framework.
  • Deployment Model: Can be deployed on-premises or in the cloud. ERPNext also offers ERPNext Cloud for managed hosting.
  • Infrastructure Requirements: Requires a server environment with Python, MariaDB/MySQL, and adequate resources based on the scale of usage. Cloud deployment may require subscription fees or usage-based pricing.

3. Stockpile :- Stockpile is a free, easy-to-use inventory management system designed for small businesses and organizations.

  • Features: Basic inventory management features including stock tracking, reporting, and user management. Designed for small businesses with straightforward inventory needs.
  • Scalability: Suitable for small businesses but may lack advanced features needed for larger organizations.
  • Ease of Use: Simple and easy-to-use interface suitable for users without extensive technical knowledge.
  • Licensing Model: Stockpile is free to use.
  • Technology Stack: PHP, MySQL, JavaScript, HTML/CSS.
  • Deployment Model: Usually deployed on-premises or on a self-managed server. It can also be hosted on a cloud server.
  • Infrastructure Requirements: Requires a server environment with PHP, MySQL, and adequate resources based on the scale of usage. Cloud deployment may require subscription fees or usage-based pricing.

4. inFlow Inventory :- inFlow Inventory is a feature-rich inventory management software that offers a free edition for small businesses with limited inventory needs

  • Features: Offers comprehensive inventory management features including stock tracking, order management, reporting, and integrations. Suitable for small to medium-sized businesses.
  • Scalability: Suitable for small to medium-sized businesses with options for customization.
  • Ease of Use: User-friendly interface with intuitive workflows and customizable settings.
  • Licensing Model: Offers a free edition with limited features and paid plans for advanced functionality.
  • Technology Stack: Windows-based application using .NET framework, SQL Server for database.
  • Deployment Model: Primarily installed on-premises on Windows servers. It may also offer cloud-based deployment options.
  • Infrastructure Requirements: Requires a Windows-based server environment with .NET framework, SQL Server, and adequate resources based on the scale of usage. Cloud deployment, if available, may have subscription fees.

5. ABC Inventory :- ABC Inventory is a free inventory management solution that provides basic inventory tracking and reporting capabilities.

  • Features: Basic inventory management features including stock tracking, reporting, and user management. Designed for small businesses with simple inventory needs.
  • Scalability: Limited scalability and may lack advanced features needed for larger organizations.
  • Ease of Use: Simple and straightforward interface suitable for users without extensive technical knowledge.
  • Licensing Model: ABC Inventory is free to use.
  • Technology Stack: Not specified but likely to be based on PHP, MySQL, JavaScript, HTML/CSS.
  • Deployment Model: Typically deployed on-premises or on a self-managed server. Cloud deployment might be possible but may require custom setup.
  • Infrastructure Requirements: Requires a server environment with PHP, MySQL, and adequate resources based on the scale of usage.
  • Source: Information available publicly through top search engines as I Couldn’t find an official website. It seems the project might not be actively maintained. It’s available for download on various software repositories.

6. PartKeepr :- PartKeepr is an open-source inventory management system specifically designed for managing electronic components and parts.

  • Features: Specialized for managing electronic components and parts. Offers features such as part tracking, storage location management, and documentation.
  • Scalability: Suitable for businesses dealing with electronic components but may require customization for broader inventory management needs.
  • Ease of Use: User-friendly interface tailored for managing electronic parts and components.
  • Licensing Model: Released under the GNU General Public License (GPL).
  • Technology Stack: PHP, MySQL, JavaScript, HTML/CSS.
  • Deployment Model: Can be deployed on-premises or in the cloud. It’s usually self-hosted.
  • Infrastructure Requirements: Requires a server environment with PHP, MySQL, and adequate resources based on the scale of usage. Cloud deployment may require subscription fees or usage-based pricing.

7. FrontAccounting :- FrontAccounting is an open-source accounting and inventory management system designed for small to medium-sized businesses.

  • Features: Offers modules for accounting, inventory management, sales, purchasing, and more. Suitable for small to medium-sized businesses.
  • Scalability: Suitable for small to medium-sized businesses but may lack scalability options for larger enterprises.
  • Ease of Use: Simple interface with basic functionalities suitable for users without extensive technical knowledge.
  • Licensing Model: Released under the GNU General Public License (GPL).
  • Technology Stack: PHP, MySQL, JavaScript, HTML/CSS.
  • Deployment Model: Can be deployed on-premises or in the cloud. It’s usually self-hosted.
  • Infrastructure Requirements: Requires a server environment with PHP, MySQL, and adequate resources based on the scale of usage. Cloud deployment may require subscription fees or usage-based pricing.

8. LemonERP :- LemonERP is an open-source ERP system that includes modules for inventory management, sales, purchasing, accounting, and more.

  • Features: Offers modules for inventory management, sales, purchasing, accounting, and more. Suitable for small to medium-sized businesses.
  • Scalability: Suitable for small to medium-sized businesses but may lack scalability options for larger enterprises.
  • Ease of Use: User-friendly interface with basic functionalities suitable for users without extensive technical knowledge.
  • Licensing Model: Released under the GNU General Public License (GPL).
  • Technology Stack: Not specified but likely to be based on PHP, MySQL, JavaScript, HTML/CSS.
  • Deployment Model: Typically deployed on-premises or on a self-managed server. Cloud deployment might be possible but may require custom setup.
  • Infrastructure Requirements: Requires a server environment with PHP, MySQL, and adequate resources based on the scale of usage.
  • Source: Information available publicly through top search engines as I Couldn’t find an official website. It seems the project might not be actively maintained. It might be a less widely known solution. It’s available for download on various software repositories.

9. Delivrd :- Delivrd is a free cloud-based inventory management system that offers basic inventory tracking and order management features.

  • Features: Basic cloud-based inventory management features including stock tracking, order management, and reporting. Designed for small businesses with straightforward inventory needs.
  • Scalability: Suitable for small businesses but may lack advanced features needed for larger organizations.
  • Ease of Use: Simple and easy-to-use interface suitable for users without extensive technical knowledge.
  • Licensing Model: Delivrd is free to use.
  • Technology Stack: Not specified but likely to be based on modern web technologies.
  • Deployment Model: Cloud-based deployment.
  • Infrastructure Requirements: Delivrd manages the infrastructure, so users do not need to worry about it. Users access the software via a web browser.

10. WebERP :- WebERP is an open-source web-based ERP system that includes modules for inventory management, purchasing, sales, accounting, and more.

  • Features: Provides modules for inventory management, purchasing, sales, accounting, and more. Suitable for small to medium-sized businesses.
  • Scalability: Suitable for small to medium-sized businesses but may lack scalability options for larger enterprises.
  • Ease of Use: Interface may require some learning but offers comprehensive functionalities.
  • Licensing Model: Released under the GNU General Public License (GPL).
  • Technology Stack: PHP, MySQL, JavaScript, HTML/CSS.
  • Deployment Model: Can be deployed on-premises or in the cloud. It’s usually self-hosted.
  • Infrastructure Requirements: Requires a server environment with PHP, MySQL, and adequate resources based on the scale of usage. Cloud deployment may require subscription fees or usage-based pricing.

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