Question: two tools that can be used to manage conferences?
Answer: PaperCrowd. PaperCrowd lets you promote your academic conference — and it's free. ... 
Ex Ordo. Ex Ordo is custom-built for academic and association conferences. ... 
Trello. Trello gives you a visual overview of what needs doing. ... 
Hootsuite. ... 
IFTTT. ... 
Super Planner. ... 
CamScanner. ... 
Guidebook.