Adept Scientific (Popularity: )
http://maple.adeptscience.co.uk/ Suppliers of scientific and mathematical software, with publications, training and seminars. Maple specialists. On-line magazine, free downloads, ordering.
MaplePrimes (Popularity: )
http://www.mapleprimes.com/ Downloadable add-on packages for Maple, available to Maplesoft customers as part of the Extended Maintenance Plan (EMP) subscription.