Usually racks will be used in conjunction with panniers, or some other sort of specialty bag, to carry additional gear.

http://thesweethome.com/reviews/best-bike-rack-basket-panniers/ *

https://www.reddit.com/r/bikecommuting/comments/51dy87/can_i_simply_strap_my_bag_with_a_bungee_cord_or/

Front (reviews* commentary **) https://www.reddit.com/r/bicycling/comments/5b8rg3/why_arent_front_baskets_more_common/

• Basil Portland Front Carrier*

• Blackburn

• FL1 --- in use since 1997*

• Blackburn Outpost cages ** *

• Bontrager BackRack II *

• Gorilla Cages (UK)*

• King Cage Manything*

• origin8 classiqe cargo*

• https://rawlandcycles.com/products/raidoverks-demiporteur-rack * **

• http://store.biketouringnews.com/revelate-designs-harness/

• http://salsacycles.com/components/category/racks/down_under_front_rack *

• soma lucas mini*

• Surly front rack * **

• Tubus

• Tara *

• duo lowrider *

• Velo Orange porteur rack --- Pricey, but looks phenomenal and is very sturdy*

Rear (one consideration is number of legs)

• Bontrager BackRack *

• https://www.amazon.com/Ibera-Bicycle-Touring-IB-RA4-Frame-mounted/dp/B002T5H8MW *

• Planet Bike Eco Rack*

• https://www.tailfin.cc/pages/waterproof-pannier-bags --- carbon fiber rack and aerodynamic bags *

• Topeak Explorer MTX Tubular Rack with Disc Mounts *

• Tubus *

• Cosmo *

• https://www.tailfin.cc/ *

• Tubus Fly rack *

• Tubus Fly Classic *

• Ventura Universal Bicycle Carrier Rack — an inexpensive steel rack which requires rack bosses (tapped holes on the bike frame) or some other attachment point in addition to the rack/fender holes * ** ***

Rear (seatpost mount)

• Arkel Randonneur Seat Post Rack *

• http://www.topeak.com/products/Racks/MTXBeamRackV-Type *

• https://www.ridepdw.com/goods/cargo/the-bindle-rack *

• https://www.carradice.co.uk/products/saddle-fixing-systems *

Rear (mount to brake bridge)

• Tubus Airy * **
• Tubus Fly Evo Luggage Carrier 26" - 28" *

Frame-mounted

• http://www.bikepacking.com/gear/accessories/king-cage-manything-cage/ *

Alternatives

• https://www.hookd.nl/english/ *

Techniques / hardware for mounting:

• http://www.bikecommuters.com/2008/07/19/p-clamps-are-your-friends

• https://www.rivbike.com/products/nitto-band-clamps-pair

• https://www.reddit.com/r/cycling/comments/4v4ucn/rack_adapter/

• https://www.reddit.com/r/bikewrench/comments/4vhihx/will_a_pannier_rack_designed_for_a_bike_with_disc/

• http://surlybikes.com/parts/cargo/front_mid_blade_mount_kit *

• http://thetouringstore.com/thetouringstore/tubus-bicycle-racks-for-touring-and-commuting/tubus-fit-solutions/ *

Seat post adapters

• https://www.amazon.com/XLC-Seatpost-Clamp-Rack-Mounts/dp/B00OZZXONQ *

Accessories

• [PowerTye 50152 Black 15"X15" Cargo Net featuring 6 Adjustable Hooks & Tight 2"x2" Mesh (Amazon)](https://www.amazon.com/PowerTye-50152-Black-featuring-Adjustable/dp/B0022ZXO40} *