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Open-source licences

SAMP ERP is built with the help of excellent open-source software. We thank its authors. The components below are included with the ERP under their own licences, which are not changed by our Terms and Conditions.

ComponentVersionLicenceSource / home page
blinker1.9.0MIT Licenseblinker.readthedocs.io
certifi2026.10.19Mozilla Public License 2.0github.com/certifi/python-certifi
cffi2.0.0MITcffi.readthedocs.io/
charset-normalizer3.4.7MITcharset-normalizer.readthedocs.io/
click8.3.1BSD-3-Clauseclick.palletsprojects.com/
colorama0.4.6BSD Licensegithub.com/tartley/colorama
cryptography49.0.0Apache-2.0 OR BSD-3-Clausecryptography.io/
et_xmlfile2.0.0MIT Licensefoss.heptapod.net/openpyxl/et_xmlfile
Flask3.1.3BSD-3-Clauseflask.palletsprojects.com/
Flask-Login0.6.3MIT Licensegithub.com/maxcountryman/flask-login
Flask-SQLAlchemy3.1.1BSD Licenseflask-sqlalchemy.palletsprojects.com
Flask-WTF1.2.2BSD Licenseflask-wtf.readthedocs.io/
greenlet3.3.2MIT AND PSF-2.0greenlet.readthedocs.io
itsdangerous2.2.0BSD Licenseitsdangerous.palletsprojects.com/
Jinja23.1.6BSD Licensejinja.palletsprojects.com/
lxml6.1.0BSD-3-Clauselxml.de/
MarkupSafe3.0.3BSD-3-Clausemarkupsafe.palletsprojects.com/
openpyxl3.1.5MIT Licenseopenpyxl.readthedocs.io
packaging26.0Apache-2.0 OR BSD-2-Clausepackaging.pypa.io/
pillow12.2.0MIT-CMUpillow.readthedocs.io
psutil7.2.2BSD-3-Clausegithub.com/giampaolo/psutil
PyPDF23.0.1BSD Licensepypdf2.readthedocs.io/en/latest/
PyQt55.15.11GNU GPL v3 (or a Riverbank Computing commercial licence)www.riverbankcomputing.com/software/pyqt/
PyQt5-Qt55.15.2LGPL v3www.riverbankcomputing.com/software/pyqt/
PyQt5_sip12.18.0BSD-2-Clausegithub.com/Python-SIP/sip
PyQtWebEngine5.15.7GNU GPL v3 (or a Riverbank Computing commercial licence)www.riverbankcomputing.com/software/pyqtwebengine/
PyQtWebEngine-Qt55.15.2LGPL v3www.riverbankcomputing.com/software/pyqt/
reportlab5.0.0BSD Licensewww.reportlab.com/
setuptools82.0.1MITgithub.com/pypa/setuptools
SQLAlchemy2.0.48MITwww.sqlalchemy.org
truststore0.10.5MITtruststore.readthedocs.io
typing_extensions4.15.0PSF-2.0typing-extensions.readthedocs.io/
Werkzeug3.1.7BSD-3-Clausewerkzeug.palletsprojects.com/
WTForms3.2.1BSD Licensewtforms.readthedocs.io
Python3.14.2Python Software Foundation License (PSF-2.0), with the licences of its bundled libraries (OpenSSL, libffi, SQLite, zlib, bzip2, xz, expat, mpdecimal)www.python.org/
Qt (Qt Core, Qt GUI, Qt Widgets, Qt Network, Qt WebEngine, Qt Print Support and related modules)
The Qt libraries are separate, replaceable DLL files in the program folder (_internal\PyQt5\Qt5). You may replace them with a modified version that is compatible with them; we provide the exact Qt source on request for three years.
5.15.2GNU Lesser General Public License v3.0download.qt.io/archive/qt/5.15/
Chromium (inside Qt WebEngine)
Qt WebEngine contains the Chromium browser engine. The full list of its components and licences is published at the address shown.
83 (Qt WebEngine 5.15)BSD-3-Clause and the licences of its third-party componentsdoc.qt.io/qt-5/qtwebengine-licensing.html
SumatraPDF
A separate program shipped in _internal\tools for printing PDFs on the server. Its source code is at the address shown; we send the source of the exact version shipped on request for three years.
3.5.2GNU General Public License v3.0github.com/sumatrapdfreader/sumatrapdf
cloudflared
A separate program used for optional remote access.
2026.6.0Apache License 2.0github.com/cloudflare/cloudflared
rclone
A separate program used for the optional cloud copy of backups.
1.74.4MIT Licensegithub.com/rclone/rclone
jQuery3.6.0MIT Licensejquery.com/
Select24.1.0-rc.0MIT Licenseselect2.org/
Chart.js4.4.1MIT Licensewww.chartjs.org/
vis-network9.1.9MIT License (dual-licensed Apache-2.0 / MIT; used under MIT)github.com/visjs/vis-network
Font Awesome Free6.5.2Icons CC BY 4.0, fonts SIL OFL 1.1, code MITfontawesome.com/license/free
QR code encoder (qrcode-generator by Kazuhiko Arase, adapted)
The word "QR Code" is a registered trademark of DENSO WAVE INCORPORATED.
—MIT Licensegithub.com/kazuhikoarase/qrcode-generator
Inter (font)—SIL Open Font License 1.1github.com/rsms/inter
Oxanium (font)—SIL Open Font License 1.1github.com/sevmeyer/oxanium
Instrument Serif (font)—SIL Open Font License 1.1github.com/Instrument/instrument-serif
JetBrains Mono (font)—SIL Open Font License 1.1github.com/JetBrains/JetBrainsMono

Qt and the LGPL

SAMP ERP uses the Qt libraries (including Qt WebEngine and Chromium) under the GNU Lesser General Public License version 3. The Qt libraries are installed as separate files in the program folder, and you may replace them with a modified version of Qt that is compatible with them. The source code of Qt is available at download.qt.io; on request we will also send you a copy of the exact Qt source used, for the cost of providing it, for three years from the date we distributed the version you have. Nothing in our Terms and Conditions restricts the rights the LGPL gives you over those libraries.

SumatraPDF

The PDF viewer SumatraPDF is shipped next to the ERP as a separate program under the GNU General Public License version 3. Its source code is available from github.com/sumatrapdfreader/sumatrapdf; on request we will send you the source of the exact version we ship, for the cost of providing it, for three years.

This website

This website uses the fonts Inter, Instrument Serif and Kalam under the SIL Open Font License 1.1 (Inter, Instrument Serif, Kalam). The icons and illustrations are our own.

To ask for source code, write to [email protected].