Mathematica Online
The online version of Mathematica!
Cocalc
A toolkit for coding and writing online. The UI is a bit outdated but the services are real hardcore.
Datalore
Datalore is hosted jupyter notebook
Azure Notebooks
Azure notebooks is simply a hosted Jupyter notebook.
Kaggle
Kaggle is a competition platform that bundles online computing Jupyter notebooks and data management.
Next Journal
NextJournal is the notebook for reproducible research. NextJournal provides poly-language notebooks and beautiful UI.
Google Colab
Google Colab is an online version of Jupyter Notebook which allows us to use free computation powers from Google and storage on Google …
Agenda
Taskade
Taskade is a beautiful project management tool for both personal use and team collaborations. Taskade ships with task management and …
Todoist
Multi-platform tool to track and analyze tasks.
Anydo
Anydo comes with a very useful daily review and reminder. Anydo also integrates with its own utilities such as calenders.
Evernote
Not so lightweight but still very good for managing life especially since it has got a lot of integrations from a lot of other services.