Streaming Daria
Like most media these days, Daria can be viewed via streaming. Currently, it is available for streaming at CBS All Access.
YouTube
Fans (and randos) have been illicitly uploading episodes to YouTube for about as long as YouTube has been around. These are typically removed by the show's rights holders. As the Wiki does not officially condone media piracy, we won't be offering any links to this kind of thing.
One of MTV's official YouTube channels did carry a handful of Daria episodes for a short while in late 2015 and early 2016. These were eventually removed.
Hulu
The streaming service Hulu answered the prayers of many fans by making Daria available to subscribers. Or almost all of Daria, anyway--the movies, Is It Fall Yet? and Is It College Yet? were not included. The streamed versions also used the generic filler music seen in the DVD episodes, presumably since this simplified the rights issues.
Hulu removed Daria on June 20th, 2020.
CBS All Access
Picking up where Hulu left off, CBS All Access began showing Daria later in 2020. As is the case with Hulu, CBS All Access did not include the movies or the original music.
Jodie
Jode (TV Series) was picked up by Comedy Central. When the show is made, it will presumably be streamed on Comedy Central's website.