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* Add ranges * Initial Hugo setup * Work in progress * Added selection for local or remote site * Updated to 'light' theme * Changed to using Hextra Hugo theme * Changed to using Hextra Hugo theme * Changed to Hextra Hugo theme * Change to Hextra Hugo theme * Updated Hugo setup. * Updated Hugo setup. # Conflicts: # docs/releases/_index.md * Work in progress * Added new fonts Added new documentation * Latest documentation updates * Latest documentation updates # Conflicts: # docs/containers/array.md # docs/containers/array_view.md # docs/containers/array_wrapper.md # docs/containers/bip_buffer_spsc_atomic.md # docs/containers/bitset.md # docs/containers/indirect_vector.md # docs/containers/vector.md # docs/getting-started/compilers.md * Added bloom_filter markdown doc * Added more documentation Updated CSS for light and dark modes * Fixed some menus Added mode documentation files * Updated CSS rules Added badges to home page Added uniqur_ptr + pool tutorial * Fixed formatting on the home page markdown Modified light amd dark code formatting * Updated unique_ptr-with-pool * Added container and shared message tutorials * Updates to documentation * Added const_multimap * Updated source-formatting.md * Added initial raw text files form Web site editor * Innore coverage build directory * Exported raw text documentation files from the web site editor * Hugo updates * Added Hugo intalation and markdown descriptions * More addition to the documentation * Added closure.md and updates to delegate.md * Added format.md * Added documentation for etl::delegate_observable, etl::function, Base64 codec * Added io_port documentation * Added basic_format_spec * Added documentation for string_stream and string utilities. * Added more documentation Updated the documentation CSS * Added documentation for clocks, day, duration * Added more documentation for chrono classes Updated callouts * More chrono documentation * Completed chrono documentation * Maths functions documentation * Completed maths documentation * Completed maths documentation * Completed maths documentation * Completed maths documentation * Added multiple documentation files * Added iterator.md * Added debug_count.md and versions.md * Added debug_count.md and versions.md * Added more documentation * More documentation * Added some design pattern documentation Modified some of the layout files Modified the About documentation * Converted more documentation pages Modified the site CSS * Added more documentation Moced some documentation files to new directories * Added more documentation Tweaks to CSS * Added callback_timer_deferred_locked documentation * Added callback_timer_locked documentation * More documentation updates * More documentation updates * More documentation updates * New documentation files. Harmonised file name format * New documentation files. * Multiple document updates * Multiple document updates * Final conversion of web pages * Updates before PR * Updates before PR * Updates before PR # Conflicts: # docs/blog/_index.md * Final pre PR updates * Updates to message framework documentation * Renamed directory * Fix spelling * Added author and date to blog files Moved documentation files merged from development * Fixed 'Description' typo * Fix typos # Conflicts: # docs/IO/io_port.md # docs/containers/sets/const-multiset.md # docs/containers/sets/const-set.md # docs/maths/correlation.md # docs/maths/gamma.md * Renamed two files to lower case * Minor renaming * Added author and date * Updated callout on bresenham_line.md Added support for showing the ETL version on the documentation first page, by copying the version.txt file as a hugo asset. Updated the Python 'update_release.py' to copy 'version.txt' * Replace space in filename with hyphen. Added more information to hugo-commands.md * Replace space in filename with hyphen. Added more information to hugo-commands.md # Conflicts: # docs/getting-started/view-the-docs-locally/hugo-commands.md * Added a link to pseudo_moving_average.md * Updated title pages for groups * Fixed missing 404 for non-existent pages * Fixed coordinate variable names in the 'Calculating the intersection' example --------- Co-authored-by: Roland Reichwein <Roland.Reichwein@bmw.de> Co-authored-by: John Wellbelove <john.wellbelove@etlcpp.com> Co-authored-by: John Wellbelove <john.wellbelove@etlcpp.co.uk>
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| title | weight | toc |
|---|---|---|
| Is the ETL free? | 1 | false |
The ETL is free for you or your company to use, including in commercial applications.
However, it is not free for me to create or maintain.
Why Open Source Needs Support
Development, support, documentation, testing, and hosting all require time and resources.
Currently, this work is carried entirely by me, usually without compensation.
As the ETL has grown in functionality and popularity, so has the workload. In some weeks, maintaining the project takes over 30 hours. Without financial support, this is difficult to sustain alongside paid work and personal obligations.
Why Sponsor the Embedded Template Library (ETL)?
The Embedded Template Library (ETL) is a modern, high-performance C++ library designed specifically for embedded systems. It provides STL-like functionality for environments where efficiency, reliability, and low overhead are essential.
The ETL is used by hobbyists, engineers, and international companies developing commercial embedded products. Yet it is maintained by a single developer in their spare time.
If the ETL has helped your project or become part of your development toolset, please consider supporting its continued growth.
Why Sponsorship Matters
- Sustainability
Ongoing support helps keep the library maintained and up to date. - Reliability
Sponsorship allows for regular testing, bug fixes, and improvements. - Responsibility
Supporting the tools you depend on strengthens the software ecosystem. - Recognition
Sponsors can be publicly acknowledged if desired.
Whether you use the ETL in personal projects or commercial products, your support helps keep it available and improving.
The ETL began as a way to share years of embedded development experience. Since 2014, it has grown into a feature-rich and widely used library.
But it is still powered by one developer, without corporate funding.
If you or your company benefit from the ETL, please consider becoming a sponsor. Even small contributions help cover hosting, tools, and time spent supporting the library and its users.
Why CFOs should care about Open Source software
How to sponsor
There are two ways that you can help me with the maintenance and further development of the library.
Through the GitHub donations link.
Github sponsors
By direct bank transfer
Donations are accepted in many world currencies.
AED, AUD, BGN, CAD, CHF, CLP, COP, CZK, DKK, EGP, EUR, GBP, HKD, HUF, ILS, INR, ISK, JPY, KRW,
KZT, MAD, MXN, NOK, NZD, PHP, PLN, QAR, RON, RSD, SAR, SEK, SGD, THB, TRY, USD, ZAR
I can supply invoices for companies that require one for accounting and tax purposes.
UK
Beneficiary John Wellbelove
Account 12655643
Sort code 04-00-75
Swift (International)
Beneficiary John Wellbelove
IBAN GB17 REVO 0099 7000 7513 26
BIC REVOGB21
Many thanks for any support you can give to keep this project actively supported,
John Wellbelove