Answer by taking a quote from the following article:

3 Doors Down is an American rock band from Escatawpa, Mississippi, that formed in 1996. The band originally consisted of Brad Arnold (lead vocals/drums), Todd Harrell (bass), and Matt Roberts (lead guitar, backing vocals). They were soon joined by rhythm guitarist Chris Henderson. The band rose to international fame with their first single, "Kryptonite", which charted in the top three on the Billboard Hot 100 chart.

By 2005, the band had sold 12 million albums. The band's third studio album, 2005's Seventeen Days, has been certified platinum. Of the singles from it, "Let Me Go" and "Behind Those Eyes" charted with the most success. "Live for Today", "Landing in London" (on which Bob Seger sang the second verse and provided back-up vocals), and "Here by Me" were also released as singles. During the Seventeen Days tour, the band appeared alongside southern rock band Lynyrd Skynyrd, as well as headlining many shows of their own.  Later in 2005, the band released a live DVD entitled Away from the Sun: Live from Houston, Texas. The DVD was produced and directed by Academy Award nominated Alex Gibney and Doug Biro. It features songs from both The Better Life and Away from the Sun, and even some early sketches of "It's Not Me" and "Father's Son", which were both eventually released on Seventeen Days.  Greg Upchurch, formerly of Puddle of Mudd, replaced Daniel Adair in 2005, when Adair left to become drummer and contributing member of Nickelback.  3 Doors Down released their self-titled fourth album on May 20, 2008. It debuted at No. 1 on the Billboard 200, selling 154,000 copies in its first week. It is the band's second consecutive No. 1 album on the chart after Seventeen Days, as well their fourth album to reach the Top Ten. The album contains the hit singles "It's Not My Time", "Train", "Let Me Be Myself" and "Citizen/Soldier", a song written as a tribute to the National Guard. In 2009, 3 Doors Down, along with The Soul Children of Chicago, released the song "In the Presence of the Lord" on the compilation album Oh Happy Day: An All-Star Music Celebration.  The band recorded in 2009 a Christmas song called "Where My Christmas Lives", which was the first Christmas song Brad Arnold had ever written. It was digitally released along with seven acoustic songs on December 8. Six of these acoustic tracks were from the previous self-titled album, and one was an acoustic version of "Where my Christmas Lives".

What other albums did they release?
self-titled fourth album on May 20, 2008.