Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Atomic Email Hunter - Atomic Email Hunter is an incredibly robust tool that specializes in extracting email addresses, along with usernames, from various webpages.
Standard Notes - A safe place for your notes, thoughts, and life's work
Extract Emails - Extract Email makes it so easy to create email mailing lists, catalogue contact information, and enjoy cross-platform accessibility.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Web Contact Scraper - Web Contact Scraper is a fully automated software application for gathering targeted business contact information. You can search and gather thousands of business details matching a chosen profession within any location worldwide!