In 2001, the compilation Rotten Apples was released. The double-disc version of the album, released as a limited edition, included a B-sides/rarities collection called Judas Ø. The Greatest Hits Video Collection DVD was also released at the same time, which compiled all of the Pumpkins promo videos from Gish to Machina along with unreleased material. Vieuphoria was released on DVD in 2002, as was the soundtrack album Earphoria, previously released solely to radio stations in 1994.
Billy Corgan and Jimmy Chamberlin reunited in 2001 as members of Corgan's next project, the shortlived supergroup Zwan. Their only album, Mary Star of the Sea, was released to generally positive reviews but, after cancelling a few festival appearances, Corgan announced the demise of the band in 2003 under cloudy circumstances. During 2001, Corgan also toured as part of New Order and provided vocals on their comeback album Get Ready. In October 2004, Corgan released his first book, Blinking with Fists, a collection of poetry. In June 2005, he released a solo album, TheFutureEmbrace. It was greeted with generally mixed reviews and lackluster sales. Only one single, "Walking Shade," was released in support of the album.
In addition to drumming with Zwan, Jimmy Chamberlin also formed an alternative rock/jazz fusion project band called The Jimmy Chamberlin Complex. They released an album in 2005 titled Life Begins Again. Corgan provided guest vocals on the track "Lokicat." James Iha served as a guitarist in A Perfect Circle, appearing on their Thirteenth Step club tour and 2004 album, eMOTIVe. He has also been involved with other acts such as Chino Moreno's Team Sleep and Vanessa and the O's. He continues to work with his own record label as well, Scratchie Records. D'arcy Wretzky has not made any public statements or appearances nor given any interviews since leaving the band in 1999. On January 25, 2000, she was arrested after she allegedly purchased three bags of crack cocaine, but after successfully completing a court-ordered drug education program, the charges were dropped.
Corgan insisted during this period that the band would not reform, although when Zwan broke up he announced, "I think my heart was in Smashing Pumpkins [. . .] I think it was naive of me to think that I could find something that would mean as much to me." On February 17, 2004, Corgan posted a bitter message on his personal blog calling Wretzky a "mean-spirited drug addict" and blaming Iha for the breakup of The Smashing Pumpkins. On June 3, 2004, he added that "the depth of my hurt [from Iha] is only matched with the depth of my gratitude." Iha responded to Corgan's claims in 2005, saying, "No, I didn't break up the band. The only person who could have done that is Billy."
source: Wikipedia