A1 Free Sound Effects is a website that offers a library of sound effects for non-commercial use. The files come in WAV and MP3 forms. They also offer higher quality versions for sale. A1 Free Sound Effects also offers compact discs of all 890 of the sound effects available. They are always updating their website with new sound effect MP3s and WAV files. The sound effects also vary in length of time.
Sound Dogs is a website that was established in 1997 that offers a library of sound bite MP3s. They offer a large amount of steam whistle sound bites--over one hundred. All the sound bites differ in quality, length and types of steam whistles. They also offer Surround Sound Effects, Samples and Loops, Voices and Vocals, Ringtones, Virtual Sound Effects CDs, Production Music Tracks, Virtual Royalty-Free Music CDs, Sound Effects CDs, Royalty-Free Music CDs, and Production Music CDs.
Sound Snap is a website that has library of royalty-free sound bites. Their sound bites can be downloaded in MP3, WAV and AIFF files. All the sound bites differ in quality, length, and types of steam whistles like most sound bite websites. Unlike the previous websites, though, Sound Snap offers subscription prices or individual download prices. They do offer a trial, which is limited to ten free downloads. They also offer discounted subscription download packages for students.