These are different sites that can help you gather or process information. You also might consider using RSS feeds to gather material from various sites.
SIFT is a series of actions you can take to determine the validity and reliability of claims and sources on the web.
The SIFT method, or strategy, is quick and simple and can be applied to various kinds of online content: news articles, scholarly articles, social media posts, videos, images, etc.
Each letter in SIFT corresponds to one of the Four Moves:
Investigate the source
Find better coverage
Trace claims, quotes and media to the original context
Find more details on the Four Moves from Mike Caulfield's SIFT (Four Moves), which is licensed under a Creative Commons Attribution 4.0 International License.
You know the standard ones. Here are a few others you might consider. Remember too, when using the internet for research, always use multiple search engines.