Nitter

Nitter is a discontinued free and open source alternative viewer for Twitter, focusing on privacy and performance.

Features
The user interface was designed to be minimalist and resemble the classic Twitter desktop layout. Since the user cannot log in to Twitter through Nitter, Nitter has no notifications, no home feed, and no ability to tweet. By default Nitter has no infinite scroll. Nitter had no ads or tracking and the timeline was in chronological order. Nitter relied on a glitch that allowed creating a large amount of "guest accounts" using proxy servers in order to fetch content.

In addition to the official web instance, there are unofficial public web instances, as well as community-contributed mobile apps and browser extensions. Nitter was funded by donations as well as a grant from NLnet's NGI fund.

Discontinuation
Nitter was officially discontinued in February 2024. The developer had announced the project was "dead" after Twitter removed the guest account feature, on which Nitter relied, in January 2024. Some instances had previously stopped working some months before due to changes to the Twitter API. The developer stated instances could be self hosted by having users use their own account at the risk of the account being banned.