IBM's CoreConnect program and Motorola's Semiconductor Reuse Standards are excellent examples. Open source has quickly gained popularity. A community reviews and enhances the standard with changes controlled by a single person or company. A high quality, well-supported standard emerges quickly. One popular example is Linux, controlled by Linus Torvalds.
Some variations restrict commercial usage and others require fees, which can be viewed negatively.
Synopsys' open source for TAP-in has no fees or commercial restrictions. Community source licensing is similar to open source. When community members are ready to implement commercial tools, they negotiate usage and royalties with the owner. Open community licensing gathers enhancements from a community that wants the standard to succeed. A steering group manages the process, incorporating changes and redistributing them in timely releases.