Last updated: July 24, 2015

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###Browser

Chrome/Opera: 

* [StayFocusd](https://chrome.google.com/webstore/detail/stayfocusd/laankejkbhbdhmipfmgcngdelahlfoji)
* [Morphine](https://chrome.google.com/webstore/detail/morphine/fbnpehpbojenlldmfcopeajkichnnjpo)
* [Crackbook](https://chrome.google.com/webstore/detail/crackbook/nbgjmohekjolcgemlolblankocjlgalf)
* [Counter](https://chrome.google.com/webstore/detail/counter/nabnopkhfcpmemafeophjpjacpofpdbb)
* [Strict Workflow](https://chrome.google.com/webstore/detail/strict-workflow/cgmnfnmlficgeijcalkgnnkigkefkbhd)
* [Website Blocker](https://chrome.google.com/webstore/detail/website-blocker-beta/hclgegipaehbigmbhdpfapmjadbaldib?hl=en)
* [Simple Blocker](https://chrome.google.com/webstore/detail/simple-blocker/akfbkbiialncppkngofjpglbbobjoeoe?hl=en)
* [Block site](https://chrome.google.com/webstore/detail/block-site/eiimnmioipafcokbfikbljfdeojpcgbh?hl=en)
* [Blacklist](https://chrome.google.com/webstore/detail/blacklist/jbpccandodannohfaoncogijbkfcmpgo?hl=en)

Firefox:

* [LeechBlock](https://addons.mozilla.org/en-US/firefox/addon/leechblock/)
* [DelaySites](https://addons.mozilla.org/en-US/firefox/addon/delaysites)

Web:

* [KeepMeOut](http://keepmeout.com)

[](#blank)

###OS

Windows:

* [Cold Turkey](http://getcoldturkey.com/)
* [Timeout](https://romacocanada.ca/timeout/)
* [K9 Web Protection](http://k9webprotection.com)

OS X:

* [SelfControl](http://selfcontrolapp.com/)
* [Freedom](http://macfreedom.com/)
* [K9 Web Protection](http://k9webprotection.com)

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