Productivity
A myriad of tools of various types to aid you into being productive.
A Soft Murmur
An ambient noise generator with a lot more sounds than rain.
Buttercup
A free and open source cross-platform password manager for your computer. Available in desktop, mobile, and as browser extensions to easily integrate with your browsing experience. One neat feature of this password manager is that the credentials can be stored on your own computer or on the cloud with default support for cloud services (like Dropbox). You could visit the repo of this program in this GitHub repo.
Calibre
An e-book library management tool.
Clockify
A virtually free web-based time tracking tool for you and your team (if you have any) taking on projects. Includes unlimited time and unlimited person to join in your team, only the extra functionalities are in the premium version. You could also self-host the program if you like.
Personal comment:
The offer is really good here.
Habitica
A very cool app that gamifies your life. Turn your life around into an RPG, literally! (READ: not that RPG)
Keepass
A free and open source password manager for your desktop. If you want to see the source code, you can go to the repo at Sourceforge.
LastPass
A cloud password manager. Offers web extension for even more convenience into your browsing experience.
Makerlog
A productive logger for makers. You also get to meet a community of hackers and makers who create useful (or not) products.
Quire
A minimalistic all-in-one productivity tool. Can be made as a task list, a project board, a file sharing tool, and it highlights an exhaustive list of features that'll make your productivity experience smoother.
Personal comment:
Really recommending this one. Can serve as a solid alternative for Trello.
Rainy Mood
Lets you focus through the ambience (if you're the type who find rain to be relaxing).
RescueTime
A time management software that tracks your activities and rating them whether you've been productive or not.
StackEdit
A web-based Markdown editor that comes with a lot of integration options to sync your notes with (include GitHub).
Personal comment:
Really, really recommending you to check this one out.
Trello
A project management tool mainly through arranging a list of cards.
Personal comment:
I'm thinking of migrating to this password manager now.