Write down postings and company details company by company, and reopen just those notes before an interview.

Don't leave "where did I write that" to memory
Record benefits, tech stack, and team size from the posting. The posting may come down; the note stays.
Add resume, interview, and result to the same note and your applications live in one list.
Record salary and working conditions under the same headings and comparison gets easy.
Search the company name and everything you wrote about it comes back at once.
Other ways people use the same tool
Note what actually worked, right on the Stack Overflow answer, GitHub issue, or doc page where you found it.
Note the passage that matters while you read the paper, and the source URL stays attached to it.
Save the articles you have no time for now, and pull them from the list when you do.
Add it to Chrome and use it on the posting you already have open.
Free to use