Some libraries and reputable legal organizations post dockets and court documents online for free. The websites below are generally trustworthy sources of free dockets and court documents:
Caution by kaneiderdaniel/ CC BY SA 3.0
Be cautious when accessing dockets on other free websites- there is no guarantee that they are complete or accurate.
Usually, your most reliable, trustworthy bet for locating additional free court filings is to Google the name of any major law firms, government organizations (e.g. the California Attorney General, the Department of Justice), or activist groups (e.g. the ACLU) involved in the case to see if they have posted any filings on their websites.
You should also try Googling the case name or litigants' names, especially if the case is high profile. Sometimes, this will turn up filings on news website, litigants' personal websites, websites focused on a specific legal issue, or websites devoted to archiving un-copyrighted materials, such as HathiTrust, Google Books, and Archive.org.
Finally, some websites are specifically devoted to posting free dockets and court documents: