SumOffice C SDK - terms of use

Copyright (c) 2026 SumOffice. All rights reserved.

This SDK, including the native SumSheet, SumDoc and SumSlide libraries it
contains, is proprietary software. You may install it and use it in your own
programs, including commercial ones, within the free tier described in
README.md, or within the limits of a developer key issued to you. You may ship
the native libraries as part of your own program. You may not reverse engineer
the libraries, and you may not resell or redistribute them on their own, as a
library or SDK, separately from a program of yours.

The example code in examples/ may be copied and changed without restriction.

The software is provided "as is", without warranty of any kind. Current terms:
https://sumoffice.com/c.html

Third-party components: the SumDoc library contains the Liberation Sans,
Liberation Serif and DejaVu Sans fonts, distributed under their free licences
(SIL Open Font License 1.1 and the DejaVu/Bitstream Vera licence); the native
libraries are built from open-source Rust crates under MIT, Apache-2.0 and
compatible licences.
