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.
Google KEEP: Quickly capture what’s on your mind and get a reminder later at the right place or time. Speak a voice memo on the go and have it automatically transcribed.
IFFFT: puts the internet to work for you. Create simple connections between the products you use every day.
Buffer: makes it super easy to share any page you’re reading. Keep your Buffer topped up and we automagically share them for you through the day.
MailChimp: Online email marketing solution to manage subscribers, send emails, and track results. Offers integrations with other programs.
Waveapps.com: Free and easy accounting, invoicing, and more.
Google Analytics: Get the data you need to make intelligent marketing and business decisions with Google Analytics. Available for websites, apps, and enterprise businesses.
Trello: Infinitely flexible. Incredibly easy to use. Great mobile apps. It’s free. Trello keeps track of everything, from the big picture to the minute details.
Bitbucket.org: is the Git solution for professional teams. Collaborate on code with inline comments and pull requests. Manage and share your Git repositories to build and ship software, as a team.
Last but not least, as professionals we always need to learn new stuff, you will get every damn thing on sites below..