Iconosquare - Schedule now. We'll post on Instagram for you later!
Wondershare PDFelement - All-in-one PDF editor
Later - Schedule and manage your Instagram posts
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
Storyheap - Manage your SnapChat and Instagram stories.
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.