PCMan - Open Source File Manager

PCMan File Manager is a very fast and lightweight file manager which features tabbed browsing. The goal of this application is to be slim and useful, but not to have any feature bloat.

Dolphin - Open Source File Manager

Dolphin is a lightweight file manager. It has been designed with ease of use and simplicity in mind, while still allowing flexibility and customisation. This means that you can do your file management exactly the way you want to do it.

Yadabyte - Password Manager

Open Source Password Manager for Windows

Yadabyte Passwords is like a tiny Keepass manager, except it carries fewer bells and whistles. Though it’s a bit older, this portable password manager is absolutely a breeze to use. You simply create a master password and then type the usernames, passwords, and URLs for all the services you want included in your password database.

Password Gorilla - Open Source Password Manager

Password Gorilla is a password manager and personal vault that can store login information and notes. The application consists of a single executable that allows you to create a database and save it to a specified location. The encrypted database can only be read in Password Gorilla of course, but the database is actually a different file, separate from the application, so you can create several databases if you wish.