Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Decisionize - Simplify decision making in 3 easy steps
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.
Big Decisions - An app that helps you make better decisions
LyX - LyX is a document processor.
Prioritization Sticky Notes - Curated ideas on how to make a decision on what to do next