RSS is available in different versions which are not compatible with each other (this situation caused by competing companies): RSS 0.9, RSS 1.0 and RSS 2.0. Atom is also an & XML; -based feed language which has been redesigned to fit the needs of webloggers and news sites. Atom attempts to replace RSS feeds and remove the uncertainty with incompatiblities in the different RSS versions.
RSS está disponíbel en diferentes versións que non son compatíbeis entre si (esta situación provócanna empresas competidoras): RSS 0. 9, RSS 1. 0 and RSS 2. 0. Atom é tamén unha linguaxe de fontes baseada en & XML;, redeseñada para servir as necesidades dos blogueiros e dos sitios de noticias. Atom pretende substituir as fontes RSS e eliminar a incerteza ocasionada polas incompatibilidades entre as diferentes versións de RSS.