T-License

T-License is the software license used by TRON Forum for distributing the source code of its real-time operating systems (RTOSs) such as T-Kernel and Micro T-Kernel (often written as μT-Kernel: μ pronounced as "micro", not "mu"). The license fee is free if products are developed according to T-License conditions.

The current version of T-License is version 2.2.

T-License has been created to fit the need of embedded computer system market where the source code may contain information tied to proprietary hardware information.

So, unlike GNU General Public License, T-License does not require the release of the (modified) source code of a program even if such a program is used by a third party.

The requirement to express that the use of T-Kernel or μT-Kernel by a logo in a product somewhere on the product itself or the manual can be alleviated by a TRON Forum member. Because of this, not all products released in the market that use T-Kernel or μT-Kernel mention the use of the RTOS inside.