BasKet is an open-source note manager for KDE. With its comfortable, familiar interface and freeform notes, it's captured a loyal base of fans. However, the app is only for Linux and requires KDE, which might be a bit heavy for some users. Many lighter weight options can be found with the portable filter and the list can be narrowed down with Markdown support and integrated-search.
Alternatives for Mac and Windows are vast while some other great options hold their own for Linux. Some newer and bigger name note tools have managed to cover all those platforms as well as Android and iOS.
Get more done with the Google Tasks mobile app. Manage, capture, and edit your tasks from anywhere, at anytime, with to-dos that sync across all your devices. Integrations with Gmail and Google Calendar help you get tasks done—faster.
Colorful & powerful sticky notes app for Windows & Phones. Set reminder alarms, attach them to any website or document, organize them using folders/tags, sync sticky notes between devices & send notes across LAN or to any contact across the globe.
RedNotebook is a graphical diary and journal helping you keep track of notes and thoughts. It includes a calendar navigation, customizable templates, export functionality and word clouds. You can also format, tag and search your entries.