Axwell

You can see from this video that Axwell use Serum

Axwell walks through some of the synths used in the making of the Swedish House Mafia track "One." At 2:53 in the video he says, "And then we got some Sylenth Lady Gaga sounds over here... this is where the rave begins..."

In 5:26, if you pause the video at the right moment and look very closely at the bottom left of the laptop then you can barely but definitely see Axwell using Omnisphere with Swedish House Mafia on his Laptop. The image proving it is also here: http://www13.zippyshare.com/v/ZD8rXIR4/file.html

Axwell says "I used NEXUS on my track ** "I Found U" ** for the piano sound, and I really like the simplicity of NEXUS, it's easy to find the sound you want and then, with the filters, it's easy to get it to sound exactly how you like."

In a Swedish House Mafia interview, Axwell explains what they used Melodyne for in "One" at 8:50 in the video: "Yeah, we did a lot of Melodyn-ing on the vocal, because we didn't have much to work with. It was just a few phrases that we had to sort of build our own melodies."

Axwell gives a testimonial on SynthMaster on the SynthMaster official website. He says,"Love SynthMaster's sounds and the fact that they are already treated and not dry"

The plugin can be seen 1:51 into this video: https://www.youtube.com/watch?v=YSMIfiGNVPY

Axwell talks through the making of the Swedish House Mafia track "One" in this video interview. At 2:46 he says, "We got some chords, courtesy of Synplant... [it] makes interesting sounds."

In this video (in 0:19) you can see Axwell using Pioneer Rekordbox.

Rekordbox™ is the best way of preparing and managing your tracks, be it at home, in the studio, or even on the plane! It allows you to import music from other music management software using the Bridge function or by simply adding them into the software for management. Rekordbox will work out the BPM and allow you to set hot cue and loop points into the track, utilizing a full beat grid view in advance, as well as color coding your music and adding all the ID3 information so it appears automatically later on any rekordbox enabled Pioneer DJ player.

Listed as a user on the official product page.

Endless Smile is already being used by Steve Angello, Zedd, Tritonal, Axwell, Deniz Koyu, Hardwell, Thomas Gold, Diplo, Chris Lake, Above & Beyond, Blasterjaxx, GTA, Bassjackers, TJR, Bingo Players, Tommy Trash and many other DJ/producers.

you can hear on the drop "sq power stab" which is a preset from massive.

you can hear on this track sample from "vengeance electro essentials vol 2" with the name: "VEE2 Synth Shot 117". as well as that the "chord" sounds from around 1:25 are "VEE2 Synth Shot 119" and also "VEE2 Synth Shot 120".