Open Source ERP: accounting, CRM and more

LedgerSMB is an acronym for Ledger Small Medium Business.

LedgerSMB project celebrates 10-year anniversary


The LedgerSMB project brings accounting software integrating invoicing, order processing, quotations and more (ERP) to small and midsize businesses.


  • Sales (Invoices, Orders, Quotations)
  • Receivables & Payables
  • General ledger
  • Inventory management
  • Fixed asset accounting & depreciation
  • Profit centers, departments, projects
  • Output documents in PDF, HTML, CSV, Office formats
  • Mail documents (e.g. invoices) from within the application
  • Translatable to your language (comes with 45 languages)
  • and more

The fact that LedgerSMB is open source - meaning that the source code is freely available - makes it even more customizable and flexible.

Current versions

Our current version is 1.4. This version contains mostly technical improvements over 1.3, but is our first version to be built on Dojo Toolkit for a much nicer UI experience.

Pre-release version

Development of version 1.5 has reached feature completeness and has been made available to a wider audience for testing through a series of beta versions. The latest can be downloaded from SourceForge. If you run this version and have any findings, please provide feedback through the mailing lists or by filing tickets on GitHub.

Older versions

Version 1.3 has been declared End-Of-Life on 2015, Dec 23rd. With over 45 patch releases with the initial release in October 2011, we consider this version highly stable, but community efforts will be spent on maintaining 1.4 as the Long Term Support option and the 1.5 upcoming release.

Although their use is highly discouraged for both security reasons and data stability issues, older versions are still available for download on SourceForge. When using LedgerSMB versions 1.2 or earlier, you should to do so in only in a highly restricted network environment.

It's community policy to provide at least 36 months of community support for every 1.x release series.  As such, there's no community support available for 1.3 or earlier LedgerSMB versions. However, some vendors are willing to provide support or migration services.


Some features currently under development and/or planned for future releases of LedgerSMB:

  • UI improvements (modern design, including mobile browser support)
  • Webservices
  • Revaluation of financial assets and liabilities
  • Easier installation
  • Further code quality improvements

Quality standards

The project holds high quality standards that should be expected from business software regarding these topics in particular:

  • Security
  • Performance
  • Software quality
  • Useability
  • Accessibility


We achieve this goal by:

  • Stimulating a vibrant, open community centered around:
  • Keeping a strong focus on efficiency and effectiveness through:
    • use of proven technology
    • re-use of existing solutions
    • code and design pattern re-use within the code base
    • real world use cases - introducing real solutions
    • Highly Extensible Comprehensive Automated Unit Testing
    • Highly Extensible Comprehensive Automated BDD Testing (Automated Browser Driven)
    • Active Development Commutity
    • Active Community Review


LedgerSMB began in 2006 as a fork of the popular general ledger software package called SQL-Ledger largely written and maintained by Dieter Simader since 1999. Versions 1.2 and earlier are largely based on SQL-Ledger's code.
As of 1.3 our codebase is quickly moving away from what we inherited.
As of 1.5 our User Interface has moved to Dojo Javascript libraries providing a more dynamic feel.
Some of the improvements that we've made to the code base so far include:

  • Enhanced security
  • More reports
  • Better data integrity controls
  • More code quality control measures
  • Major code size reduction while growing functionality
  • Unit testing Infrastructure to help ensure once an issue is fixed it stays fixed
  • BDD (headless automated browser) Testing infrastructure
  • A very large number of tests against both testing frameworks

Travel in our history with Internet Archive and WayBackMachine.