Open-source procurement software in 2026

2 open-source projects, ranked by GitHub stars and how recently each was worked on. Leihs leads with 246 stars, ahead of Openprocurement.api. 1 had code pushed in the last three months. Most common licenses: GPL-3.0 (1) and Apache-2.0 (1). Commercial procurement software are listed separately.

All open-source procurement software, ranked

1
Leihs leihs
leihs is an inventory management, procurement and lending system

Complete system Production-ready A university or institution lends cameras, laptops or tools to many users and wants a proven self-hosted system.
★ 246 GPL-3.0 Shell Active, pushed 13 days ago
2
Openprocurement.api openprocurement
API interface to OpenProcurement database

Building block Experimental Mainly for historical study of the ProZorro design.
★ 117 Apache-2.0 Python Quiet, pushed 17 months ago

Compared head to head

Coupa vs SAP Ariba Jaggaer vs SAP Ariba Leihs vs SAP Ariba Coupa vs Jaggaer Coupa vs Leihs Jaggaer vs Leihs

Looking for an alternative to

Coupa SAP Ariba

Open-source licenses

Strong copyleft: 1. If you distribute the program or anything built on it, you must release the whole source under the same license.
Permissive: 1. Use it anywhere, including in closed products. You keep the copyright notice; Apache-2.0 also grants patent rights.

Languages

Shell 1 and Python 1.

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