aniketpanjwani/chomper : Internet blocker for the Linux desktop.
▻https://github.com/aniketpanjwani/chomper
Chomper is a Python command-line program for use on Linux which can either create blacklists of blocked websites or whitelists of allowed websites for specified periods of time. The program is intended to help people with issues being productive on a computer due to Internet distractions.
Most internet blocking programs operate just by modifying the hosts file. This approach only allows for creating blacklists. Additionally, the hosts file approach does not allow you to block particular URLs - it only allows you to block particular domains.
Chomper instead filters outgoing requests through a transparent proxy, which allows for filtering requests at the URL level. This means you can make nuanced blacklists and whitelists, so that you can block websites without sacrificing your ability to do work.
You can read more about my motivation for developing Chomper here.