Several of America’s largest tech companies, including Amazon, Facebook, Google, Microsoft, Twitter, and Yahoo have submitted a letter to the FCC in defense of net neutrality.

The coalition specifically objected to new rules the FCC is considering that could allow ISPs to charge companies extra to distribute their content to their customers, calling the proposals a “grave threat to the Internet.”

FCC commissioner Mignon Clyburn published a blog post on Wednesday reiterating her commitment to an open internet. Interested consumers can also submit their own comments to the FCC here.

Here’s the letter in its entirety:

Dear Chairman Wheeler and Commissioners Clyburn, Rosenworcel, Pai, and O’Reilly:

We write to express our support for a free and open internet. Over the past twenty years, American innovators have created countless Internet-based applications, content offerings, and services that are used around the world. These innovations have created enormous value for Internet users, fueled economic growth, and made our Internet companies global leaders. The innovation we have seen to date happened in a world without discrimination. An open Internet has also been a platform for free speech and opportunity for billions of users.

The Commission’s long-standing commitment and actions undertaken to protect the open Internet are a central reason why the Internet remains an engine of entrepreneurship and economic growth.

According to recent news reports, the Commission intends to propose rules that would enable phone and cable Internet service providers to discriminate both technically and financially against Internet companies and to impose new tolls on them. If these reports are correct, this represents a grave threat to the Internet.

Instead of permitting individualized bargaining and discrimination, the Commission’s rules should protect users and Internet companies on both fixed and mobile platforms against blocking, discrim- ination, and paid prioritization, and should make the market for Internet services more transparent. The rules should provide certainty to all market participants and keep the costs of regulation low.

Such rules are essential for the future of the Internet. This Commission should take the necessary steps to ensure that the Internet remains an open platform for speech and commerce so that America continues to lead the world in technology markets.

Here’s a list of the more than 150 companies, including The Next Web, that signed the letter:

Amazon
Cogent
Dropbox
Ebay
Etsy
Facebook
Foursquare
Google
Kickstarter
Level 3
LinkedIn
Lyft
Microsoft
Netflix
Reddit
Tumblr
Twitter
Vonage Holdings Corp.
Yahoo! Inc.
Zynga

2600hz, Inc.
2redbeans
4chan
8×8, Inc.
Addy
AdviserDeck
Agile Learning Labs
Airdroids
AirHelp
AnalyticsMD
Appar
Apportable
AppRebates
Apptology
Assembly Made, Inc.
Authentise
Automattic/WordPress.com
BadgerMapping
Bitnami
BitTorrent
Blu Zone C
Beyond
Chirply
Clef
CloudFare
Codecademy
CodeCombat
CodeHS
CodeScience
Colourful Rebel
Contextly
Coursera
CrowdTilt
Cube, Co
dasData
Digg
Distinc.tt
DuckDuckGo
Duolingo
DynaOptics
Embedly
Fandor
Floor64
Flowroute
Flurry
Fonebook
Funeral Innovations
Gandi
Gawker
General Assembly
Github
Grid
Handy Networks
Haystack.tv
Heavybit Industries
HelloSign
HeyZap
iFixit
iLost
Imgur
Instapaper
inXile Entertainment
Kaltura
LawGives
Leaflad
LendUp
Linearair
Linknovate
littleBits
Lucipher.net
MDDHosting LLC
Medium
Meetup
Meteor Development Group
Minds + Machines
Misk
MixRank
MobileWorks
Motionry
MozartMedical
Mozilla
NOTCOT Inc
O’Reilly Media
OfficeNinjas
Open Materials
Open Spectrum
OpenDNS
Opera Software ASA
PayTango
Pocket/ReaditLater
Poll Everywhere, Inc
Printrbot
Publitas.com
Rallyware
Recrout
Redbubble
Rewheel/Digital Fuel Monitor Reylabs
Rogue Labs
Shapeways
Sidecar
Sift Science
Simpolaris
SketchDeck
Skytree
SlidePay, Inc
Socialscope
Solidoodle
SpiderOak
SpoonRocket
Spotfront
StackExchange
StartX Stanford
Statwing
Tastemaker
The Next Web
Triggit
Tsumobi
Tucows
Twilio
UberConference
UltiMachine
Ustream
Vidmaker
Volary Foundation
Voys Telecom
Waxy
Worldly
Xola Yanomo