OKF4net is free and open source under LGPL-3.0-or-later — sponsorship is never required to use it. If you'd like to support the project anyway, there are two options below.
OKF4net's GitHub Sponsors listing funds ongoing maintenance and spec-fidelity work — golden fixture upkeep, tracking the OKF spec, CI across Linux/Windows/macOS. It's a bonus, not a paywall: the library, CLI, and every source project stay LGPL-3.0-or-later regardless.
For teams that need a guaranteed response time, hands-on integration help, custom development, or training on OKF4net, Coderise — the studio behind OKF4net — offers paid dedicated support.
Annual SLA plans, per-incident support, and quote-based engagements for everything else.