The RealNetworks Community Source License (RCSL) is a

software license A software license is a legal instrument (usually by way of contract law, with or without printed material) governing the use or redistribution of software. Under United States copyright law, all software is copyright protected, in both sour ...

. Developers pick this license when they do not want to open source their resultant

Helix DNA Helix DNA is a project to produce computer software that can play audio and video media in various formats and aid in producing such media. It is intended as a largely free and open-source digital media framework that runs on numerous operating ...

-based application. RCSL has a free R&D license and commercial terms for distribution.https://opensource.org/licenses/RPSL-1.0
license text The RCSL is used by the

Helix project Helix DNA is a project to produce computer software that can play audio and video media in various formats and aid in producing such media. It is intended as a largely free and open-source digital media framework that runs on numerous operating ...

External links

Complete text of the RCSL license
Software licenses Year of introduction missing Community Source License {{software-stub